LB1938T

Ordering number : EN6802A Monolithic Digital IC LB1938T Overview 1ch, Low-saturation Forward/Reverse Motor Driver The LB1938T is an H-bridge motor driver that supports low-voltage drive and features low-saturation outputs in an ultraminiature slim package. The LB1938T 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 MSOP8 package (3.0mm×4.9mm×0.93mm) • 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 Supply voltage Output current Output voltage Input applied voltage Symbol VCC max IOUT max VOUT max VIH max Conditions Ratings 10.5 800 VCC+VSF 10 Unit V mA V V Continued on next page. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 60607 MS IM / 91003 TN (OT) No.6802-1/5 LB1938T Continued from preceding page. Parameter Allowable power dissipation Operating temperature range Storage temperature range Symbol Pd max Topr Tstg Conditions Mounted on a specified board * Ratings 400 -30 to +85 -55 to +150 Unit mW °C °C Note *: Mounted on a specified board: 114.3mm×76.1mm×1.5mm, glass epoxy resin, wiring density 20% Allowable Operating Range at Ta = 25°C Parameter Supply voltage Input high-level voltage Input low-level voltage Symbol VCC VIH VIL Conditions Ratings 2.2 to 10 2.0 to 9.5 -0.3 to +0.3 Unit V V V Electrical Characteristics at Ta = 25°C, VCC = 3V Parameter Circuit current Symbol ICC1 ICC2 ICC3 Output saturation voltage VOsat1 VOsat2 VOsat3 Spark killer diode forward voltage Spark killer diode inverse current Input current Thermal protection operating temperature Note *: Design target value: Measurement with a single unit not made. VSF IRS IIN TSD Standby Forward/reverse drive Brake Upper+lower IO = 100mA for forward/reverse rotation Upper+lower IO = 300mA for forward/reverse rotation Upper IO = 100mA for braking IO = 300mA VOUT = 10V VIN = 5V Design target value * 0.1 0.9 0.1 75 180 0.15 1.7 5 98 V V µA µA °C 0.35 0.5 V Conditions min Ratings typ 0.1 14 20 0.15 max 5 19 29 0.2 µA mA mA V Unit Package Dimensions unit : mm (typ) 3245B Allowable Power Dissipation, Pd max - mW 3.0 8 700 Pd max - Ta 600 500 400 Mounted on a specified board 114.3mm×76.1mm×1.5 mm, glass epoxy resin 3.0 4.9 0.5 300 208 200 1 (0.53) 2 0.65 0.25 0.125 (0.85) 1.1MAX 100 0 -30 0 30 60 90 120 ILB01453 Ambient Temperature, Ta - °C 0.08 SANYO : MSOP8(150mil) No.6802-2/5 LB1938T Pin Assignment VCC 1 IN1 2 8 7 P-GND OUT1 OUT2 NC Top view ILB01454 LB1938T IN2 3 S-GND 4 6 5 MSOP8 S-GND: GND for the control system P-GND: GND for the power system Truth Table IN1 L H L H IN2 L L H H OUT1 OFF H L H OUT2 OFF L H H Mode Standby Forward rotation Reverse rotation Brake Sample Application Circuit C1 = 0.1 to 10µF VCC 1 IN1 2 60kΩ 80kΩ OUT1 Control block CPU 7 M 6 OUT2 IN2 3 60kΩ 80kΩ S-GND 4 8 P-GND ILB01455 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.6802-3/5 LB1938T 0.5 VO(sat) - IO VCC = 3V Output saturation voltage, VO(sat) - V 0.5 VO(sat) - Ta VCC = 3V Output saturation voltage, VO(sat) - V 0.4 0.4 IO = 3 0.3 0 0mA 0.3 0.2 0.2 0.1 0.1 IO = 100m A 0 0 100 200 300 400 500 ILB01459 0 -40 -20 0 20 40 60 80 100 120 140 Output current, IO - mA 28 Ambient temperature, Ta - °C 28 ILB01458 ICC - Tc ICC - VCC VCC = VIN e Brake mod 24 24 Current drain, ICC - mA 20 Current drain, ICC - mA 20 16 16 12 Forw a rd o 8 Bra k VC e mode C =5 V r reve rse m ode, V 3V CC = 5 V reverse Forward or mode IN1 IN2 12 8 4 4 3V 0 -40 0 -20 0 20 40 60 80 100 120 140 0 1 2 3 4 5 6 7 8 9 10 Case temperature, Tc - °C 160 ILB01457 2.0 Supply voltage, VCC - V ILB01460 IIN - VIN VCC = 3V ICC Standby Mode Temperature Characteristics VCC = 11V 1.6 Current drain, ICC - µA Input current, IIN - µA 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 Under 0.01µA -20 0 20 40 60 80 100 120 140 Input voltage, VIN - V 100 ILB01461 Case temperature, Tc - °C ILB01462 IN Pin Input Current Temperature Characteristics VIN = 5V 80 Input current, IIN - µA 60 40 20 0 -40 -20 0 20 40 60 80 100 120 140 Case temperature, Tc - °C ILB01463 No.6802-4/5 LB1938T SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. 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SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of June, 2007. Specifications and information herein are subject to change without notice. PS No.6802-5/5