HV9921/HV9922/HV9923 3-Pin Switch-Mode LED Lamp Driver ICs Features Description • Constant output current: HV9921/HV9922/HV9923 are pulse-width modulated (PWM), high-efficiency, LED driver control ICs. They - HV9921 – 20mA allow efficient operation of LED strings from voltage - HV9922 – 50mA sources ranging up to 400VDC. HV9921/22/23 include - HV9923 – 30mA an internal high voltage switching MOSFET controlled • Universal 85 - 264VAC operation with fixed off-time (T ) of approximately 10μs. The OFF • Fixed off-time buck converter LED string is driven at constant current, thus providing • Internal 475V power MOSFET constant light output and enhanced reliability. The out- put current is internally fixed at 20mA for HV9921, 50mA for HV992, and 30mA for HV9923. The peak cur- Applications rent control scheme provides good regulation of the • Decorative lighting output current throughout the universal AC line voltage range of 85 to 264VAC or DC input voltage of 20 to • Low power lighting fixtures 400V.  2014 Microchip Technology Inc. DS20005311A-page 1

HV9921/HV9922/HV9923 TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors@microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: http://www.microchip.com You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000). Errata An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision of silicon and revision of document to which it applies. To determine if an errata sheet exists for a particular device, please check with one of the following: • Microchip’s Worldwide Web site; http://www.microchip.com • Your local Microchip sales office (see last page) When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products. DS20005311A-page 2  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 PIN DIAGRAM 1 2 3 1 2 3 TO-243AA TO-92 (SOT-89) See Table 2-1 for Pin information. TYPICAL APPLICATION CIRCUIT LED AC 1 - LED n HV9921/22/23 3 VDD DRAIN 1 GND 2  2014 Microchip Technology Inc. DS20005311A-page 3

HV9921/HV9922/HV9923 1.0 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS Supply Voltage V ................................-0.3V to +10V DD Supply Current I ..............................................+5mA DD Operating Ambient temperature...........-40°C to +85°C Operating Junction Temperature........-40°C to +125°C Storage temperature..........................-65°C to +150°C Power dissipation @+25°C for TO-92.............740 mW Power dissipation @+25°C for SOT-89.......1600 mW* * Mounted on FR4 board, 24mmx25mmx1.57mm Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other condi- tions, above those indicated in the operational listings of this specification, is not implied. Exposure to maxi- mum rating conditions for extended periods may affect device reliability. 1.1 ELECTRICAL SPECIFICATIONS TABLE 1-1: ELECTRICAL CHARACTERISTICS1 Symbol Parameter Notes Min Typ Max Units Conditions Regulator (V ) DD V V Regulator Output - - 7.5 - V DD DD V V Supply Voltage - 20 - - V DRAIN DRAIN V V Under-voltage Threshold - 5.0 - - V UVLO DD ΔV V Under-voltage Lockout Hysteresis - - 200 - mV UVLO DD V = 8.5V, V I Operating Supply Current - - 200 350 μA DD(EXT) DRAIN DD = 40V Output (DRAIN) V Breakdown Voltage 2 475 - - V BR I = 20mA (HV9921) DRAIN R ON Resistance - - - 210 Ω I = 50mA (HV9922) ON DRAIN I = 30mA (HV9923) DRAIN C Output Capacitance 3 - 1 5 pF V = 400V DRAIN DRAIN I MOSFET Saturation Current 3 100 150 - mA SAT Current Sense Comparator Threshold Current - HV9921 2 18.5 - 25.5 mA I Threshold Current - HV9922 2 49 - 63 mA THL Threshold Current - HV9923 2 28.2 - 38.2 mA T Leading Edge Blanking Delay 2, 3 200 300 400 ns BLANK T Minimum ON Time - - - 650 ns ON(MIN) OFF-Time Generator T OFF Time - 8 10.5 13 μS OFF 1 Specifications are T = 25°C, V = 50V unless otherwise noted. A DRAIN 2 Applies over the full operating ambient temperature range of -40°C < T < +125°C. A 3 For design guidance only DS20005311A-page 4  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 THERMAL RESISTANCE Package θja TO-92 132°C/W TO-243AA(SOT-89) 133°C/W FIGURE 1-1: TYPICAL PERFORMANCE CHARACTERISTICS (T = 25°C UNLESS OTHERWISE NOTED) J 1.10 200 nt 180 urre 1.05 160 C old 1.00 μΩ) 140 sh e ( 120 e c malized Thr 00..9950 N Resistan 1860000 or 0.85 O 40 N 20 0.80 -40 -15 10 35 60 85 110 0 Junction Temperature, °C -40 -15 10 35 60 85 110 Junction Temperature (°C) 12 1000 10 F) p S) 8 ce ( 100 μ n Time ( 6 pacita OFF 4 N Ca 10 AI R D 2 0-40 -15 10 35 60 85 110 10 10 20 30 40 Junction Temperature (°C) DRAIN Voltage (V) 180 580 160 TJ = 25°C akdown Voltage (V) 555557654300000 N Current (mA) 11142080000 TJ = 125°C Bre 520 RAI 60 N D AI 510 40 R D 500 20 490 0 -40 -15 10 35 60 85 110 0 10 20 30 40 Junction Temperature (°C) DRAIN Voltage (V)  2014 Microchip Technology Inc. DS20005311A-page 5

HV9921/HV9922/HV9923 2.0 PIN DESCRIPTION See Pin Diagram on page 3 for the figures. TABLE 2-1: PIN DESCRIPTION Pin # Name Description 1 Drain Drain terminal of the output switching MOSFET and a linear regulator input 2 GND Common connection for all circuits Power Supply pin for all control circuits. By pass this pin with a 0.1 μF low-impedance 3 VDD capacitor 3.0 FUNCTIONAL DESCRIPTION 4.1 Selecting L1 and D1 The HV9921/22/23 are PWM peak current controllers There is a certain trade-off to be considered between designed to control a buck converter topology in contin- optimal sizing of the output inductor L1 and the toler- uous conduction mode (CCM). The output current is ated output current ripple. The required value of L1 is internally preset at 20mA for HV9921, 50mA for inversely proportional to the ripple current ∆IO in it. HV992, and 30mA for HV9923. V T O OFF L1= ------------------------------- When the input voltage of 20 to 400V appears at the I O DRAIN pin, the internal high-voltage linear regulator seeks to maintain a voltage of 7.5VDC at the V pin. DD V is the forward voltage of the LED string. T is the Until this voltage exceeds the internally programmed O OFF off-time of HV9921/22/23. The output current in the under-voltage threshold, the output switching MOSFET LED string (I ) is calculated then as: is non-conductive. When the threshold is exceeded, O the MOSFET turns on. The input current begins to flow IO= ITH–12---IO into the DRAIN pin. Hysteresis is provided in the under- voltage comparator to prevent oscillation. where I is the current sense comparator threshold. TH When the input current exceeds the internal preset The ripple current introduces a peak-to-average error level, a current sense comparator resets an RS flip- in the output current setting that needs to be accounted flop, and the MOSFET turns off. At the same time, a for. Due to the constant off-time control technique used one-shot circuit is activated that determines the dura- in HV9921/22/23, the ripple current is independent of tion of the off-state (10.5μs typical). As soon as this the input AC or DC line voltage variation. Therefore, the time is over, the flip-flop sets again. The new switching output current will remain unaffected by the varying cycle begins. input voltage. A “blanking” delay of 300ns is provided that prevents Adding a filter capacitor across the LED string can false triggering of the current sense comparator due to reduce the output current ripple even further, thus per- the leading edge spike caused by circuit parasitics. mitting a reduced value of L1. However, keep in mind that the peak-to-average current error is affected by the 4.0 APPLICATION INFORMATION variation of TOFF. Therefore, the initial output current accuracy might be sacrificed at large ripple current in L1. HV9921/22/23 are low-cost off-line buck converter ICs specifically designed for driving multi-LED strings. Another important aspect of designing an LED driver They can be operated from either universal AC line with the HV9921/22/23 is related to certain parasitic range of 85 to 264VAC, or 20 to 400VDC, and drive up elements of the circuit, including distributed coil capac- to tens of high-brightness LEDs. All LEDs can be run in itance of L1, junction capacitance and reverse recovery series, and the HV9921/22/23 regulate at constant cur- of the rectifier diode D1, capacitance of the printed cir- rent, yielding uniform illumination. HV9921/22/23 are cuit board traces C and output capacitance C compatible with triac dimmers. The output current is PCB DRAIN of the controller itself. These parasitic elements affect internally fixed at 20mA for HV9921, 50mA for HV9922, the efficiency of the switching converter and could and 30mA for HV9923. These parts are available in potentially cause false triggering of the current sense space saving TO-92 and SOT-89 packages. comparator if not properly managed. Minimizing these parasitics is essential for efficient and reliable operation of the HV9921/22/23. DS20005311A-page 6  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 Coil capacitance of inductors is typically provided in the 4.2 Estimating Power Loss manufacturer’s data books either directly or in terms of the self-resonant frequency (SRF). Discharging the parasitic capacitance CP into the DRAIN pin of the HV9921/22/23 is responsible for the SRF=12 LC   L  bulk of the switching power loss. It can be estimated using the following equation: where L is the inductance value, and C is the coil capacitance.) Charging and discharging Lthis capaci- P =V-----I-N---2--C-----P--+V I t F tance every switching cycle causes high-current spikes SWITCH  2 IN SAT rr S in the LED string. Therefore, connecting a small capac- itor C (~10nF) is recommended to bypass these O where F is the switching frequency, I is the satu- spikes. S SAT rated DRAIN current of the HV9921/22/23. The switch- Using an ultra-fast rectifier diode for D1 is recom- ing loss is the greatest at the maximum input voltage. mended to achieve high efficiency and reduce the risk The switching frequency is given by the following equa- of false triggering of the current sense comparator. tion. Using diodes with shorter reverse recovery time, t , rr and lower junction capacitance, C , achieves better J V –V performance. The reverse voltage rating, V , of the F =-------I-N------------O----- R S V T diode must be greater than the maximum input voltage IN OFF of the LED lamp. When the HV9921/22/23 LED driver is powered from The total parasitic capacitance present at the DRAIN the full-wave rectified AC input, the switching power pin of the HV9921/22/23 can be calculated as: loss can be estimated as: 1 CP=CDRAIN+CPCB+CL+CJ PSWITCH-2-------T------------VACCP+2ISATtrrVAC–VO OFF When the switching MOSFET turns on, the capaci- tance CP is discharged into the DRAIN pin of the IC. VAC is the input AC line voltage. The discharge current is limited to about 150mA typi- The switching power loss associated with turn-off tran- cally. However, it may become lower at increased junc- sitions of the DRAIN pin can be disregarded. Due to the tion temperature. The duration of the leading edge large amount of parasitic capacitance connected to this current spike can be estimated as: switching node, the turn-off transition occurs essen- V C tially at zero-voltage. T =-----I-N------------P--+t SPIKE I rr SAT Conduction power loss in the HV9921/22/23 can be calculated as: In order to avoid false triggering of the current sense comparator, C must be minimized in accordance with P the following expression: P =DI 2R +I V 1–D COND O ON DD IN I T –t  C --S---A---T-------------B---L--A---N---K-----M---I-N-----------r--r--- P VINMAX where D = VO/VIN is the duty ratio, RON is the on-resis- tance, I is the internal linear regulator current. DD where TBLANK(MIN) is the minimum blanking time of When the LED driver is powered from the full-wave rec- 200ns, and VIN(MAX) is the maximum instantaneous tified AC line input, the exact equation for calculating input voltage. the conduction loss is more cumbersome. However, it can be estimated using the following equation: P =K I 2R +K I V COND C O ON d DD AC where V is the input AC line voltage. The coefficients AC K and K can be determined from the minimum duty C d ratio of the HV9921/22/23.  2014 Microchip Technology Inc. DS20005311A-page 7

HV9921/HV9922/HV9923 FIGURE 4-1: CONDUCTION LOSS Select L1 68mH, I = 30mA. Typical SRF = 170KHz. COEFFICIENTS K AND K Calculate the coil capacitance. C d 0.7 1 1 C =------------------------------------------=-------------------------------------------------------------=13pF L L12SRF2 68mH2170KHz2 0.6 4.3.1.2 Step 2. Selecting D1 0.5 Usually, the reverse recovery characteristics of ultra- Kd(Dm) fast rectifiers at I = 20 ~ 50mA are not provided in the F 0.4 manufacturer’s data books. The designer may want to Kc(Dm) experiment with different diodes to achieve the best 0.3 result. Select D1 MUR160 with V = 600V, t ≈ 20ns (I = R rr F 0.2 20mA, I = 100mA) and C ≈ 8pF (VF > 50V). RR J 4.3.1.3 Step 3. Calculating total parasitic 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 capacitance Dm C =5pF+5pF+13pF+8pF=13pF p 4.3 EMI Filter 4.3.1.4 Step 4. Calculating the leading edge spike duration As with all off-line converters, selecting an input filter is critical to obtaining good EMI. A switching side capaci- tor, albeit of small value, is necessary in order to ensure 264V 231pF T =--------------------------------------------+20ns136nsT low impedance to the high frequency switching cur- SPIKE 100mA BLANKMIN rents of the converter. As a rule of thumb, this capacitor should be approximately 0.1-0.2 μF/W of LED output 4.3.1.5 Step 5. Estimating power dissipation power. A recommended input filter is shown in in HV9921 at 265VAC Figure 4-2 for the following design example. Switching power loss: 4.3.1 DESIGN EXAMPLE 1 P --------------------------264V31pF+2100mA20ns The following example designs a HV9921 LED lamp SWITCH 210.5s driver meeting the following specifications: 264V–41V131mW • Input: Universal AC, 85-265VAC • Output Current: 20mA Minimum duty ratio: • Load: String of 10 LED (LW541C by OSRAM VF 41V D =--------------------------0.11 = 4.1V max. each) M 265V 2 4.3.1.1 Step 1. Calculating L1. Conduction power loss: The output voltage V = 10 x V ≈ 41V (max.). Use this O F equation assuming a 30% peak-to-peak ripple. P =0.2520mA2210+0.63200A264V COND 55mW 41V10.5s L1=----------------------------------=72mH 0.320mA Total power dissipation in HV9921: P =131mW+55mW=186mW TOTAL DS20005311A-page 8  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 4.3.1.6 Step 6. Selecting input capacitor C IN OutputPower=41V20mA=820mW Select C ECQ-E4104KF by Panasonic® (0.1μF, IN 400V, Metalized Polyester Film). FIGURE 4-2: UNIVERSAL 85-264VAC LED LAMP DRIVER L D2 D3 IN C C C IN2 IN O LED - LED 1 12 D4 D5 D1 HV9921/22/23 VRD1 L1 3 VDD AC Line 85-265V C GND DRAIN 1 DD 2 F1 FIGURE 4-3: TYPICAL EFFICIENCY FIGURE 4-4: SWITCH-OFF TRANSITION Ch1:V , Ch3: I 82 DRAIN DRAIN 80 78 76 %) y ( 74 nc 72 ZERO VOLTAGE cie 70 TRANSITION Effi 68 66 64 62 75 100 125 150 175 200 225 250 275 Input AC Line Voltage (VAC)  2014 Microchip Technology Inc. DS20005311A-page 9

HV9921/HV9922/HV9923 FIGURE 4-5: TYPICAL EFFICIENCY FIGURE 4-6: SWITCH-OFF TRANSITION Ch1:V , Ch3: I DRAIN DRAIN LEADING EDGE SPIKE SWITCH OFF 25mA FIGURE 4-7: FUNCTIONAL BLOCK DIAGRAM GND VDD DRAIN Regulator T = 10.5μs OFF 7.5V REF S Q - R Q + R T = 300ns BLANK HV9921/HV9922/HV9923 DS20005311A-page 10  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 5.0 LAYOUT CONSIDERATIONS For a recommended circuit board layout for the 5.4 Thermal Considerations vs. HV9921/22/23, see Figure 5-1. Radiated EMI 5.1 Single Point Grounding The copper area where GND pin is connected acts not only as a single point ground, but also as a heat sink. Use a single point ground connection from the input fil- This area should be maximized for good heat sinking, ter capacitor to the area of copper connected to the especially when the SOT-89 package is used. The GND pin. same applies to the cathode of the free-wheeling diode D1. Both nodes are quiet; therefore, they will not cause 5.2 Bypass Capacitor (C ) radiated RF emission. The switching node copper area DD connected to the DRAIN pin of the HV9921/22/23, the The V pin bypass capacitor C should be located anode of D1 and the inductor L1 needs to be mini- DD DD as near as possible to the V and GND pins. mized. A large switching node area can increase high DD frequency radiated EMI. 5.3 Switching Loop Areas 5.5 Input Filter Layout Considerations The area of the switching loop connecting the input fil- ter capacitor C , the diode D1 and the HV9921/22/23 The input circuits of the EMI filter must not be placed in IN together should be kept as small as possible. the direct proximity to the inductor L1 in order to avoid magnetic coupling of its leakage fields. This consider- The switching loop area connecting the output filter ation is especially important when unshielded con- capacitor C , the inductor L1 and the diode D1 struction of L1 is used. When an axial input EMI filter O together should be kept as small as possible. inductor L is selected, it must be positioned orthogo- IN nal with respect to L1. The loop area formed by C , IN2 L and C should be minimized. The input lead wires IN IN must be twisted together. FIGURE 5-1: RECOMMENDED CIRCUIT BOARD LAYOUT WITH HV9921/22/23 COMPONENT SIDE VIEW C O VRD1 L IN LED + L1 AC Line F1 D1 85-264VAC C C LED - IN2 IN D2-5 C U1 DD  2014 Microchip Technology Inc. DS20005311A-page 11

HV9921/HV9922/HV9923 6.0 PACKAGING INFORMATION 6.1 Package Marking Information 3-lead TO-243AA* Example (SOT-89) XXXYYWW H21YYWW NNN NNN Example 3-lead TO-92 HV9921 XXXXXX N3 XXXX e3 e3 YWWNNN YWWNNN Legend: XX...X Product Code or Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) NNN Alphanumeric traceability code e3 Pb-free JEDEC® designator for Matte Tin (Sn) * This package is Pb-free. The Pb-free JEDEC designator ( e 3 ) can be found on the outer packaging for this package. Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for product code or customer-specific information. Package may or may not include the corporate logo. DS20005311A-page 12  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 3-Lead TO-243AA (SOT-89) Package Outline (N8) D D1 C E H E1 1 2 3 L b b1 A e e1 Top View Side View NNoottee:: FFoorr tthhee mmoosstt ccuurrrreenntt ppaacckkaaggee ddrraawwiinnggss,, sseeee tthhee MMiiccrroocchhiipp PPaacckkaaggiinngg SSppeecciiffiiccaattiioonn aatt wwwwww..mmiiccrroocchhiipp..ccoomm//ppaacckkaaggiinngg.. Symbol A b b1 C D D1 E E1 e e1 H L MIN 1.40 0.44 0.36 0.35 4.40 1.62 2.29 2.00† 3.94 0.73† Dimensions 1.50 3.00 NOM - - - - - - - - - - (mm) BSC BSC MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60 2.29 4.25 1.20 JEDEC Registration TO-243, Variation AA, Issue C, July 1986. † This dimension differs from the JEDEC drawing Drawings not to scale.  2014 Microchip Technology Inc. DS20005311A-page 13

HV9921/HV9922/HV9923 Note: For the most current package drawings, see the Microchip Packaging Specification at www.microchip.com/packaging. DS20005311A-page 14  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 APPENDIX A: REVISION HISTORY Revision A (October 2014) • Original Release of this Document.  2014 Microchip Technology Inc. DS20005311A-page 15

HV9921/HV9922/HV9923 THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at Users of Microchip products can receive assistance www.microchip.com. This web site is used as a means through several channels: to make files and information easily available to • Distributor or Representative customers. Accessible by using your favorite Internet • Local Sales Office browser, the web site contains the following information: • Field Application Engineer (FAE) • Technical Support • Product Support – Data sheets and errata, application notes and sample programs, design Customers should contact their distributor, resources, user’s guides and hardware support representative or Field Application Engineer (FAE) for documents, latest software releases and archived support. Local sales offices are also available to help software customers. A listing of sales offices and locations is • General Technical Support – Frequently Asked included in the back of this document. Questions (FAQ), technical support requests, Technical support is available through the web site online discussion groups, Microchip consultant at: http://microchip.com/support program member listing • Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives CUSTOMER CHANGE NOTIFICATION SERVICE Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at www.microchip.com. Under “Support”, click on “Customer Change Notification” and follow the registration instructions. DS20005311A-page 16  2014 Microchip Technology Inc.

HV9921/HV9922/HV9923 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. XX - X - X Examples: Device Package Environmental Reel a) HV9921N3-G: 20 mA output current, TO-92 package, 1000/ Options bag b) HV9923N8-G: 30 mA output current, TO-243AA(SOT-89) Device: HV9921 = 3-Pin Switch-Mode LED Lamp Driver IC, package, 2000/reel 20 mA output current HV9922 = 3-Pin Switch-Mode LED Lamp Driver IC, 50 mA output current HV9923 = 3-Pin Switch-Mode LED Lamp Driver IC, 30 mA output current Package: N3 = TO-92 N8 = TO-243AA (SOT-89) Environmental G = Lead (Pb)-free/ROHS-compliant package Reel: (nothing)= 1000/bag for N3 package, 2000/reel for N8 package  2014 Microchip Technology Inc. DS20005311A-page 17

Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device Trademarks applications and the like is provided only for your convenience The Microchip name and logo, the Microchip logo, dsPIC, and may be superseded by updates. It is your responsibility to FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, ensure that your application meets with your specifications. PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash MICROCHIP MAKES NO REPRESENTATIONS OR and UNI/O are registered trademarks of Microchip WARRANTIES OF ANY KIND WHETHER EXPRESS OR Technology Incorporated in the U.S.A. and other countries. IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, INCLUDING BUT NOT LIMITED TO ITS CONDITION, MTP, SEEVAL and The Embedded Control Solutions QUALITY, PERFORMANCE, MERCHANTABILITY OR Company are registered trademarks of Microchip Technology FITNESS FOR PURPOSE. Microchip disclaims all liability Incorporated in the U.S.A. arising from this information and its use. Use of Microchip Silicon Storage Technology is a registered trademark of devices in life support and/or safety applications is entirely at Microchip Technology Inc. in other countries. the buyer’s risk, and the buyer agrees to defend, indemnify and Analog-for-the-Digital Age, Application Maestro, BodyCom, hold harmless Microchip from any and all damages, claims, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, suits, or expenses resulting from such use. No licenses are dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, conveyed, implicitly or otherwise, under any Microchip ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial intellectual property rights. Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. ISBN: 978-1-63276-708-0 Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. DS20005311A-page 18  2014 Microchip Technology Inc.

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Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M icrochip: HV9922N8 HV9922N3-G HV9921N3-G HV9922N8-G HV9922N3 HV9921N8-G HV9921N8 HV9921N3 HV9923N3-G HV9923N8-G