LB1938FA-BH

Ordering number : ENA2041 LB1938FA Monolithic Digital IC 1ch, Low-saturation Forward/Reverse Motor Driver http://onsemi.com Overview The LB1938FA is an H-bridge motor driver that supports low-voltage drive and features low-saturation outputs in an ultraminiature slim package. The LB1938FA provides forward, reverse, brake, and standby modes controlled by two input signals, and is an optimal DC motor driver for notebook personal computers, digital cameras, cell phones, and other portable equipment. Features • Ultraminiature Micro8 package • The low saturation voltage means that the voltage applied to the motor is higher and IC heat generation is reduced. This allows this IC to be used in environments with higher ambient operating temperatures. Output saturation voltage (high side + low side): VOsat = 0.15V typical (IO = 100mA) • The wide usable voltage range and the low standby mode current drain of 0.1 µA make this IC optimal for battery operated equipment. • There are no constraints on the relationship between the input signal voltage and the supply voltage. For example, this IC can be use at VCC = 3V and VIN = 5V. • Thermal protection circuit limits the drive current and prevents the IC from causing a fire or being destroyed if the IC chip temperature reaches or exceeds 180°C due to large currents flowing when the outputs are shorted due to, for example, motor layer shorting or other phenomena. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 10.5 V Output current IOUT max 800 mA Output voltage VOUT max VCC+VSF Input applied voltage VIH max Allowable power dissipation Pd max Mounted on a specified board * V 10 V 400 mW Operating temperature range Topr -30 to +85 °C Storage temperature range Tstg -55 to +150 °C Note *: Mounted on a specified board: 114.3mm×76.1mm×1.5mm, glass epoxy resin, wiring density 20% 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. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Semiconductor Components Industries, LLC, 2013 May, 2013 40412 SY 20120321-S00010 No.A2041-1/5 LB1938FA Allowable Operating Range at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 2.2 to 10 V Input high-level voltage VIH 2.0 to 9.5 V Input low-level voltage VI L -0.3 to +0.3 V Electrical Characteristics at Ta = 25°C, VCC = 3V Parameter Symbol Ratings Conditions min Circuit current max ICC1 Standby 0.1 5 μA ICC2 Forward/reverse drive 14 19 mA ICC3 Output saturation voltage Unit typ VOsat1 Brake 20 29 mA 0.15 0.2 V 0.35 0.5 V Upper IO = 100mA for braking Upper+lower IO = 100mA for forward/reverse rotation VOsat2 Upper+lower IO = 300mA for forward/reverse rotation VOsat3 0.1 0.15 V Spark killer diode forward voltage VSF IO = 300mA 0.9 1.7 V Spark killer diode inverse current IRS VOUT = 10V 0.1 5 μA Input current IIN VIN = 5V 75 98 μA Thermal protection operating TSD Design target value * °C 180 temperature Note *: Design target value: Measurement with a single unit not made. Package Dimensions unit : mm (typ) 3427 3.0 Pd max - Ta 8 1 2 0.65 0.18 0.08 1.1 MAX 0.33 Allowable Power Dissipation, Pd max - mW 0.55 4.9 3.0 700 600 500 400 Mounted on a specified board 114.3mm×76.1mm×1.5 mm, glass epoxy resin 300 208 200 100 0 -30 0 30 60 90 120 Ambient Temperature, Ta - C SANYO : Micro8 No.A2041-2/5 LB1938FA Pin Assignment VCC 1 IN1 2 8 P-GND 7 OUT1 LB1938FA IN2 3 6 OUT2 S-GND 4 5 NC Top view S-GND: GND for the control system P-GND: GND for the power system Truth Table IN1 IN2 OUT1 OUT2 Mode L L OFF OFF Standby H L H L Forward rotation L H L H Reverse rotation H H H H Brake Sample Application Circuit VCC 1 IN1 2 Control block OUT1 CPU IN2 7 M 6 3 OUT2 S-GND 4 8 P-GND Cautions: • VCC and GND lines suffer substantial fluctuation in the current quantity, causing a problem of line oscillation in certain cases. In this case, take following points into account: (1) Use a thick and short wiring to reduce the wiring inductance. (2) Insert a capacitor with satisfactory frequency characteristics near IC. (3) Connect S-GND to the control system GND on the CPU side and P-GND to the power system GND. No.A2041-3/5 LB1938FA VO(sat) - IO 0.4 0.3 0.2 0.1 0 0 100 200 300 400 VO(sat) - Ta 0.5 VCC = 3V Output saturation voltage, VO(sat) - V Output saturation voltage, VO(sat) - V 0.5 VCC = 3V 0.4 00mA IO = 3 0.3 0.2 A IO = 100m 0.1 0 -40 500 -20 0 ICC - Tc 28 20 40 60 80 100 120 140 Ambient temperature, Ta - °C Output current, IO - mA ICC - VCC 28 24 VCC = VIN 24 e 20 16 Bra k VC e mode C =5 V 12 Forw ard o r reve 8 rse m ode, V CC = 5V 3V 4 Current drain, ICC - mA Current drain, ICC - mA Brake mod 20 Forward or 16 e IN1 reverse mod IN2 12 8 4 3V 0 -40 160 0 -20 0 20 40 60 80 100 120 0 140 1 2 3 4 5 6 7 8 9 10 Case temperature, Tc - °C Supply voltage, VCC - V IIN - VIN ICC Standby Mode Temperature Characteristics 2.0 VCC = 3V VCC = 11V 1.6 120 1.2 80 0.8 40 0.4 0.29 0 0 1 2 3 4 5 6 7 8 9 10 0 -40 -20 0 20 40 60 80 100 120 140 Case temperature, Tc - °C Input voltage, VIN - V IN Pin Input Current Temperature Characteristics 100 VIN = 5V 80 60 40 20 0 -40 -20 0 20 40 60 80 100 120 140 Case temperature, Tc - °C No.A2041-4/5 LB1938FA ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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