Ordering number : EN3947F LB1836M M onolithic Digital IC L ow-Saturation Bidirectional Motor http://onsemi.com Driver for Low-Voltage Drive Overview The LB1836M is a low-saturation two-channel bidirectional motor driver IC for use in low-voltage applications. The LB1836M is a bipolar stepper-motor driver IC that is ideal for use in printers, FDDs, cameras and other portable devices. Features • Low voltage operation (2.5V min) • Low saturation voltage (upper transistor + lower transistor residual voltage ; 0.40V typ at 400mA). • Parallel connection (Upper transistor + lower transistor residual voltage ; 0.5V typ at 800mA). • Separate logic power supply and motor power supply • Brake function • Spark killer diodes built in • Thermal shutdown circuit built in • Compact package (14-pin MFP) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max -0.3 to +10.5 V VS max -0.3 to +10.5 V Output supply voltage VOUT VS + VSF V Input supply voltage VIN -0.3 to +10 V GND pin flow-out current IGND Per channel 1.0 A Allowable power dissipation Pd max * Mounted on a board. 800 mW Operating temperature Topr -40 to +85 °C Storage temperature Tstg -55 to +150 °C * Mounted on a substrate: 30×30×1.5mm3, glass epoxy board. StressesexceedingMaximumRatingsmaydamagethedevice.MaximumRatingsarestressratingsonly.FunctionaloperationabovetheRecommendedOperating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 June, 2013 31110 SY/82207 MS/71807 MS 20070709-S00001/70407 MS PC/21097HA/D2293/O0693 No.3947-1/6

LB1836M Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.5 to 9.0 V VS 1.8 to 9.0 V Input “H”-level voltage VIH 1.8 to 9.0 V Input “L”-level voltage VIL -0.3 to +0.7 V Electrical Characteristics at Ta = 25°C, VCC = VS = 3V Ratings Parameter Symbol Conditions Unit min typ max Supply current ICC0 VIN1, 2, 3, 4 = 0V, ICC + IS 0.1 10 μA ICC1 VIN1 = 3V, VIN2, 3, 4 = 0V, ICC + IS 14 20 mA ICC2 VIN1, 2 = 3V, VIN3, 4 = 0V, ICC + IS 22 35 mA Output saturation voltage VOUT1 IOUT = 200mA 0.20 0.28 V (upper + lower) VOUT2 IOUT = 400mA 0.40 0.60 V VOUT3 IOUT = 400mA, Parallel connection 0.25 0.35 V VOUT4 IOUT = 800mA, Parallel connection 0.50 0.70 V Output sustain voltage VO (SUS) IOUT = 400mA 9 V Input current IIN VIN = 2V, VCC = 6V 80 μA Spark killer diode Reverse current IS (leak) VCC1, 2 = 9V 30 μA Forward voltage VSF IOUT = 400mA 1.7 V Package Dimensions unit : mm (typ) 3111A Pd max -- Ta W 1000 Specified board : 30×30×1.5mm3 m glass epoxy 14 8.0 8 ax -- 800 m d P 4.46.4 63 ation, 600 0. sip (1.0) 11.0 0.35 7 7MAX 0.15 wer dis 400 420 1. o (1.5) able p 200 0.1 Allow SANYO : MFP14S(225mil) 0 ñ 40 ñ 20 0 20 40 60 8085 100 Ambient temperature, Ta -- °C Pin Assignment GND IN3 OUT3 VS2 OUT4 IN4 Vcont 14 13 12 11 10 9 8 LB1836M 1 2 3 4 5 6 7 VCC IN1 OUT1 VS1 OUT2 IN2 GND Top view Note) Ground both GND pins. No.3947-2/6

LB1836M Block Diagram VCC VS2 VS1 10μF IN1 OUT1 er oll ontr M C OUT2 IN2 Thermal shutdown IN3 er OUT3 oll ontr M C OUT4 IN4 GND GND Truth Table IN1/3 IN2/4 OUT1/3 OUT2/4 Mode H L H L Forward L H L H Reverse H H L L Brake L L OFF OFF Standby No.3947-3/6

LB1836M Design Notes If large current flows on the power supply (VS) line and the GND line, then in some applications and layouts, misoperation due to line oscillation may result. The modes during which large current flows are as follows : • Motor surge current when the DC motor starts up or when it shifts rotation directions (forward ↔ reverse). • Passthrough current generated within the IC when shifting rotation directions (forward ↔ reverse) or when shifting from forward/reverse rotation to braking, or vice versa. The following points should be kept in mind regarding the pattern layout : • Keep the wiring lines thick and short in order to reduce wiring inductance between the power supply (VS) and GND. • Insert a passthrough capacitor near the IC. (Maximum effect is obtained by inserting the passthrough capacitor between VS and the pin 7 GND at the closest distance possible. • If the CPU and the LB1836M are mounted on separate boards and the difference between the ground potential of each board is large, install resistors of about 10kΩ in series between the CPU and the LB1836M inputs. Vcont pin VCC VS OUT M Ω ID OUT 0 IN 30 VZ ID = V rZ (= constant) Vcont As shown in the above diagram, the Vcont pin outputs the voltage of the band gap Zener VZ + VF (=1.93V). In normal use, this pin is left open. The drive current ID is varied by the Vcont voltage. However, because the band gap Zener is shared, it functions as a bridge. No.3947-4/6

LB1836M VO (sat) – IO IIN – Ta 1.0 110 VCC = VS = IN = 3V V – sat) 0.8 A 100 V (O μ– e, 0.6 N 90 on voltag 0.4 urrent, II 80 INI2N1 urati put c sat In ut 0.2 70 p ut O 0 0 0 100 200 300 400 500 600 – 40 – 20 0 20 40 60 80 100 120 140 160 Output current, IO – mA Ambient temperature, Ta – °C VO (sat) – Ta VO (sat) – IO 0.6 1.0 VCC = VS = IN = 3V V VO(sat) = total value V – 0.5 – at) at) 0.8 (sO 0.4 IO = 400mA (sO V V e, e, 0.6 g g saturation volta 00..32 IO = 200mA saturation volta 0.4 1ch totaPlarallel c o n n e ctio n total put 0.1 put 0.2 ut ut O O 0 0 – 40 – 20 0 20 40 60 80 100 120 140 0 100 200 300 400 500 600 700 800 900 Ambient temperature, Ta – °C Output current, IO – mA IS – Ta ICC – Ta 24 6 VCC = VS = IN = 3V VCC = VS = IN = 3V 20 5 A A m m Current drain, I–S 11268 RFeBovrrweearaskred urrent drain, I–CC 234 RFeovrBewrraseeradk C 4 1 0 0 – 40 – 20 0 20 40 60 80 100 120 140 160 – 40 – 20 0 20 40 60 80 100 120 140 160 Ambient temperature, Ta – °C Ambient temperature, Ta – °C IIN – VIN ICC – VCC 400 28 VCC = VS = 3V VS = IN = 3V IINN12 24 Break μA 300 IINN34 mA 20 – – Input current, IIN 120000 Current drain, ICC 11268 Forward/Reverse 4 Standby 0 0 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 11 Input voltage, VIN – V Supply voltage, VCC – V No.3947-5/6

LB1836M IS – VS 24 VCC = IN = 3V Break 20 A m 16 – S nt drain, I 12 Forward/Reverse urre 8 C 4 Standby 0 0 1 2 3 4 5 6 7 8 9 10 11 Supply voltage, VS – V ONSemiconductorandtheONlogoareregisteredtrademarksofSemiconductorComponentsIndustries,LLC(SCILLC).SCILLCownstherightstoanumber of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf.SCILLCreservestherighttomakechangeswithoutfurthernoticetoanyproductsherein.SCILLCmakesno warranty,representationorguaranteeregardingthesuitabilityofitsproductsforanyparticularpurpose,nordoesSCILLCassumeanyliabilityarisingoutofthe applicationoruseofanyproductorcircuit,andspecificallydisclaimsanyandallliability,includingwithoutlimitationspecial,consequentialorincidental damages.“Typical”parameterswhichmaybeprovidedinSCILLCdatasheetsand/orspecificationscananddovaryindifferentapplicationsandactual performancemayvaryovertime.Alloperatingparameters,including“Typicals” mustbevalidatedforeachcustomerapplicationbycustomer’stechnical experts.SCILLCdoesnotconveyanylicenseunderitspatentrightsnortherightsofothers.SCILLCproductsarenotdesigned,intended,orauthorizedforuse ascomponentsinsystemsintendedforsurgicalimplantintothebody,orotherapplicationsintendedtosupportorsustainlife,orforanyotherapplicationin whichthefailureoftheSCILLCproductcouldcreateasituationwherepersonalinjuryordeathmayoccur.ShouldBuyerpurchaseoruseSCILLCproductsfor anysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdSCILLCanditsofficers,employees,subsidiaries,affiliates,anddistributors harmlessagainstallclaims,costs,damages,andexpenses,andreasonableattorneyfeesarisingoutof,directlyorindirectly,anyclaimofpersonalinjuryor deathassociatedwithsuchunintendedorunauthorizeduse,evenifsuchclaimallegesthatSCILLCwasnegligentregardingthedesignormanufactureofthe part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.3947-6/6