MIC4126/27/28 Dual 1.5A-Peak Low-Side MOSFET Drivers in Advanced Packaging General Description Features The MIC4126, MIC4127, and MIC4128 family are highly- • Dual 1.5A-peak drivers reliable dual 1.5A low-side MOSFET drivers fabricated on • 4.5V to 20V operating range Micrel’s BiCMOS/DMOS process. The devices feature low • Exposed backside pad packaging reduces heat power consumption and high efficiency. The MIC4126/27/28 translate TTL or CMOS input logic levels to – ePAD SOIC-8L (θJA = 58°C/W) output voltage levels that swing within 25mV of the positive – ePAD MSOP-8L (θ = 60°C/W) JA supply or ground whereas comparable bipolar devices are – 3mm x 3mm MLF™-8L (θ = 60°C/W) JA capable of swinging only to within 1V of the supply. The • Bipolar/CMOS/DMOS construction MIC4126/7/8 is available in three configurations: dual – 25mV maximum output offset from supply or ground inverting, dual non-inverting, and complimentary output. • Latch-up protection to >200mA reverse current The MIC4126/27/28 offer pin-compatible as well as smaller footprint replacements for the MIC4426/27/28 with • Switches 1000pF in 25ns improved packaging and electrical performance. The • Logic-input threshold independent of supply voltage MIC4126/27/28 are available in exposed pad, EPAD, • Logic-input protection to –5V SOIC-8L and MSOP-8L options as well as a small-size • 6pF typical equivalent input capacitance 3mm x 3mm MLF™-8L option. The devices have an input operating range of 4.5V to 20V. • Dual inverting, dual non-inverting, and complementary configurations Primarily intended for driving power MOSFETs, MIC4426/7/8 drivers are suitable for driving other loads • -40°C to +125°C operating junction temperature range (capacitive, resistive, or inductive) which require low- Applications impedance, high peak current, and fast switching time. The devices can withstand up to 500mA of reverse current • DC/DC converters (either polarity) without latching and up to 5V noise spikes • Motor drivers (either polarity) on ground pins. • Clock line driver Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. Functional Diagram MIC4126/27/28 Block Diagram MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc, Inc. Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • http://www.micrel.com July 2005 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 Ordering Information Part Number Configuration Package Junction Temp. Range(1) Lead Finish MIC4126YME Dual Inverting EPAD 8-lead SOIC –40° to +125°C Pb-Free MIC4126YMME Dual Inverting EPAD 8-lead MSOP –40° to +125°C Pb-Free MIC4126YML Dual Inverting 8-lead MLF –40° to +125°C Pb-Free MIC4127YME Dual Non-inverting EPAD 8-lead SOIC –40° to +125°C Pb-Free MIC4127YMME Dual Non-inverting EPAD 8-lead MSOP –40° to +125°C Pb-Free MIC4127YML Dual Non-inverting 8-lead MLF –40° to +125°C Pb-Free MIC4128YME Inverting + Non-inverting EPAD 8-lead SOIC –40° to +125°C Pb-Free MIC4128YMME Inverting + Non-inverting EPAD 8-lead MSOP –40° to +125°C Pb-Free MIC4128YML Inverting + Non-inverting 8-lead MLF –40° to +125°C Pb-Free Pin Configuration EPAD SOIC-8L (ME) EPAD SOIC-8L (ME) EPAD SOIC-8L (ME) EPAD MSOP-8L (MME) EPAD MSOP-8L (MME) EPAD MSOP-8L (MME) MLF-8L (ML) MLF-8L (ML) MLF-8L (ML) Pin Description Pin Number Pin Name Pin Function 1, 8 NC Not internally connected 2 INA Control Input A: TTL/CMOS compatible logic input 3 GND Ground 4 INB Control Input B: TTL/CMOS compatible logic input. 5 OUTB Output B: CMOS totem-pole output. 6 V Supply Input: +4.5V to +20V S 7 OUTA Output A: CMOS totem-pole output. EP GND Ground, backside pad. July 2005 2 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 Absolute Maximum Ratings (1) Operating Ratings (2) Supply Voltage (V )......................................................+24V Supply Voltage (V )......................................+4.5V to +20V S S Input Voltage (V )...........................V + 0.3V to GND – 5V Temperature Range (T )...........................–40°C to +125°C IN S J Junction Temperature (T ).........................................150°C Package Thermal Resistance J 3X3 MLF™ θ .................................................60°C/W Storage Temperature................................–65°C to +150°C JA EPAD MSOP-8L θ ...............................60°C/W Lead Temperature (10 sec.)......................................300°C JA EPAD SOIC-8L θ .................................58°C/W ESD Rating, Note 3 JA Electrical Characteristics (4) 4.5V ≤ V ≤ 20V; Input voltage slew rate >1V/µs; C = 1000pF. T = 25°C, bold values indicate full specified temperature range; S OUT A unless noted. Symbol Parameter Condition Min Typ Max Units Input V Logic 1 Input Voltage 2.4 1.4 IH V 2.4 1.6 V Logic 0 Input Voltage 1.1 0.8 IL V 1.3 0.8 IIN Input Current 0 ≤ VIN ≤ VS –1 1 µA Output V High Output Voltage V–0.025 V OH S V Low Output Voltage 0.025 V OL R Output Resistance I = 10mA, V = 20V 6 10 O OUT S Ω 8 12 I Peak Output Current 1.5 A PK I Latch-Up Protection Withstand reverse current >200 mA Switching Time t Rise Time Test Figure 1 13 30 R ns 20 40 t Fall Time Test Figure 1 15 25 F ns 18 40 t Delay Time Test Figure 1 37 50 D1 ns 43 60 t Delay Time Test Figure 1 40 60 D2 ns 45 70 Power Supply I Power Supply Current V = V = 3.0V 1.4 4.5 S INA INB mA 1.5 8 I Power Supply Current V = V = 0.0V 0.18 0.4 S INA INB mA 0.19 0.6 Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Devices are ESD sensitive. Handling precautions recommended. Human body model: 1.5kΩ in series with 100pF. 4. Specification for packaged product only. July 2005 3 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 Test Circuit Figure 1a. Inverting Configuration Figure 2a. Non-inverting Configuration Figure 2b. Non-inverting Timing Figure 1b. Inverting Timing July 2005 4 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 Typical Characteristics July 2005 5 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 Application Information for total power dissipation is the sum of the dissipation caused by the load and the transition power dissipation (P L Supply Bypassing + P ). T Large currents are required to charge and discharge large Load Dissipation capacitive loads quickly. For example, changing a 1000pF load by 16V in 25ns requires 0.8A from the supply input. Power dissipation caused by continuous load current (when driving a resistive load) through the driver’s output To guarantee low supply impedance over a wide frequency resistance is: range, parallel capacitors are recommended for power supply bypassing. Low-inductance ceramic MLC capacitors P = I 2 R L L O with short lead lengths (< 0.5") should be used. A 1.0µF For capacitive loads, the dissipation in the driver is: film capacitor in parallel with one or two 0.1µF ceramic MLC capacitors normally provides adequate bypassing. P = f C V 2 L L S Grounding Transition Dissipation When using the inverting drivers in the MIC4126 or In applications switching at a high frequency, transition MIC4128, individual ground returns for the input and output power dissipation can be significant. This occurs during circuits or a ground plane are recommended for optimum switching transitions when the P-channel and N-channel switching speed. The voltage drop that occurs between the output FETs are both conducting for the brief moment driver’s ground and the input signal ground, during normal when one is turning on and the other is turning off. high-current switching, will behave as negative feedback P = 2 f V Q and degrade switching speed. T S Charge (Q) is read from the following graph: The E-pad and MLF packages have an exposed pad under the package. It’s important for good thermal performance that this pad is connected to a ground plane. Control Input Unused driver inputs must be connected to logic high (which can be V ) or ground. For the lowest quiescent S current (< 500µA), connect unused inputs-to-ground. A logic-high signal will cause the driver to draw up to 9mA. The control input voltage threshold is approximately 1.5V. The control input recognizes 1.5V up to V as a logic high S and draws less than 1µA within this range. Power Dissipation Power dissipation should be calculated to make sure that Crossover Energy Loss per Transition the driver is not operated beyond its thermal ratings. Quiescent power dissipation is negligible. A practical value July 2005 6 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 Package Information 8-Pin Exposed Pad SOIC (M) 8-Pin Exposed Pad MSOP (MM) July 2005 7 M9999-072605 (408) 955-1690

Micrel MIC4126/27/28 8-Pin MLF (ML) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2004 Micrel, Incorporated. July 2005 8 M9999-072605 (408) 955-1690

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M icrel: MIC4127YMME TR MIC4128YMME TR MIC4127YML TR M icrochip: MIC4126YMME MIC4126YME MIC4127YMME MIC4128YMME MIC4128YME MIC4127YME MIC4127YME-TR MIC4128YML-TR MIC4128YMME-TR MIC4127YML-TR MIC4127YMME-TR MIC4128YME-TR MIC4126YMME-TR MIC4126YME-TR MIC4126YML-TR