Ordering number : ENA2014 LB1973JA M onolithic Digital IC T wo-channel H-Bridge Driver http://onsemi.com Overview The LB1973JA is a two-channel H-bridge driver that supports for low saturation draive operation. It is optimal for H-bridge drive of stepping motors (AF and zoom) in portable equipment such as camera cell phones. Features • Two-channel H-bridge driver • 2 phase excitation, 1-2 phase excitation drive are possible • 2ch simultaneous connection is possible • The range of the operation voltage is wide.(1.8V to 7.5V) • Parallel input interface • Built-in thermal protection Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max -0.3 to +8.0 V Output voltage VOUT max - VSF to VCC+VSF V Input voltage VIN max -0.3 to +8.0 V Spark killer Di order direction electric ISF max 1000 mA Ground pin source current IGND Per channel 1000 mA Allowable power dissipation Pd max *Mounted on a bord 800 mW Operating temperature Topr -20 to +85 °C Storage temperature Tstg -40 to +150 °C * Mounted on a Specified board : 114.3mm×76.1mm×1.6mm, glass epoxy Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time. Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current, high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details. StressesexceedingMaximumRatingsmaydamagethedevice.MaximumRatingsarestressratingsonly.FunctionaloperationabovetheRecommendedOperating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Allowable Operating Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 1.8 to 7.5 V High-level input voltage VIH RIN = 1kΩ 1.3 to 7.5 V Low-level input voltage VIL RIN = 1kΩ -0.3 to +0.5 V Semiconductor Components Industries, LLC, 2013 June, 2013 30712 SY 20120117-S00010 No.A2014-1/5

LB1973JA Electrical Characteristics at Ta = 25°C, VCC = 1.9V Ratings Parameter Symbol Conditions Unit min typ max Source current ICCO1 VCC = 1.9V,IN1 to IN4 = Low level 0.01 1 μA ICCO2 VCC = 3V,IN1 to IN4 = Low level 0.01 1 μA ICC1 IN1 = High level,IN2 to IN4 = Low level 18 25 mA ICC2 IN1 = High level,IN2 to IN4 = Low level, 19 27.5 mA VCC = 3V Output saturation voltage1 VOUT11 IOUT = 270mA,VCC = 1.9V to 3.6V, 0.2 0.3 V (single connection) Ta = -20 to 85°C VOUT = Upper Tr and Under Tr IN1 = High level, IN2 to IN4 = Low level Supplementation: Standard similar as for IN2 to IN4 = High level VOUT12 IOUT = 350mA,VCC = 1.9V to 3.6V, 0.25 0.4 V Ta = -20 to 85°C VOUT = Upper Tr and Under Tr IN1 = High level, IN2 to IN4 = Low level Supplementation: Standard similar as for IN2 to IN4 = High level Output saturation voltage2 VOUT21 IOUT = 270mA,VCC = 1.9V to 3.6V, 0.12 0.2 V (parallel connection) Ta = -20 to 85°C VOUT = Upper Tr and Under Tr OUT1-3,OUT2-4 short. IN1 and IN3 = High level, IN2 and IN4 = Low level Supplementation: Standard similar as for IN2 and IN4 = High level VOUT22 IOUT = 500mA,VCC = 1.9V to 3.6V, 0.2 0.35 V Ta = -20 to 85°C VOUT = Upper Tr and Under Tr OUT1-3,OUT2-4 short. IN1 and IN3 = High level,IN2 and IN4 = Low level Supplementation: Standard similar as for IN2 and IN4 = High level Output electric current with the IPA VIN = 1.9 to 3.6V, Ta = -20 to 85°C *1 9 mA parasitic element Input current IIN VIN = 1.9V 32 70 μA Themal shutdown operation Ttsd *2: Design guarantee 140 °C temperature Temperature hysteresis width ∆T *2: Design guarantee 20 °C Spark killer Diode Reverse current IS(leak) VCC-OUT = 8V, VIN = Low level 10 μA Forword voltage VSF ISF = 400mA, VIN = Low level 1.7 V *1: Output electric current with the parasitic element_IPA: The current value that the off ch(-free) output is pulled at the time of one side ch drive by a parasitic element *2: Design guarantee value and does not measure * VSF: The current order direction voltage true in a time No.A2014-2/5

LB1973JA Package Dimensions unit : mm (typ) 3178B Pd max -- Ta 1.0 5.2 Mounted on a specified board : W 114.3mm x 76.1mm x 1.6mm 16 9 ax - 0.8 glass epoxy m d P 4.4 6.4 pation, 0.6 si 0.5 wer dis 0.4 1 8 o p (0.33) 0.65 0.22 0.15 wable 0.2 o max All 1.5 0-20 0 20 40 60 8085 100 1.3) Ambient temperature, Ta -- C ( 1 0. SANYO :SSOP16(225mil) Pin Assignment T4 T3 T1 T2 D C U U C U U C N N O O N O O N G 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 C C 4 3 C 1 2 C VC N IN IN N IN IN N (Top View) Truth Table Input Output Mode IN1 IN2 IN3 IN4 OUT1 OUT2 OUT3 OUT4 Low Low Low Low Off Off Off Off Standby mode High Low High Low Channel 1, forward - - - - Low High Low High Channel 1, reverse High Low High Low Channel 2, forward - - - - Low High Low High Channel 2, reverse High High - - The logic output for the first high-level input is produced. - - High High No.A2014-3/5

LB1973JA Stepping motor control example (1) Timing chart for 2-phase drive IN1 IIN2 IN3 IN4 Channel 1 Standby Forward Reverse Forward Reverse Forward Standby output mode Channel 2 Standby Forward Reverse Forward Reverse Forward Standby output mode (2) Timing chart for 1-2 phase drive IN1 IIN2 IN3 IN4 Channel 1 Standby Forward OFF Reverse OFF Forward Standby output mode Channel 2 Standby Forward OFF Reverse OFF Forward Standby output mode No.A2014-4/5

LB1973JA Block Diagram VCC 30K OUT2 IN2 100K T h C e on rm OUT1 IN1 13000KK trol Blo al shutd ck C own IN3 30K ircu cir OUT3 it cu 100K it OUT4 30K IN4 100K GND 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.A2014-5/5