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L9925 Datasheet(PDF) 1 Page - STMicroelectronics |
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L9925 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 9 page 2 INDEPENDENTLY CONTROLLED H-BRIDGES RDS,ON <0.9 Ω @Tamb =25°C, VS = 14V 0.8A DC CURRENT WITHOUT HEAT SINK LOW QUIESCENT MODE Iq <200 µA THEMAL PROTECTION CROSS CONDUCTION PROTECTION SUPPLY VOLTAGE UP TO 40V CMOS COMPATIBLE INPUTS OUTPUT SHORT-CIRCUIT PROTECTION DESCRIPTION The L9925 is a dual full bridge driver for stepper motor applications. Realized in BCD (Bipolar, CMOS & DOS) techology, logic circuits, precise linear blocks and power transistors are combined to optimize circuit performance and minimize off chip components. Schmitt triggers are used for all input stages and are fully compatible with 5V CMOS logic levels. When both enable signals are low, the IC is commanded to a low quiescent cur- rent state and will draw less than 200 µA from the battery. The charge pump is integrated on chip; no exter- nal components are required. Full performance is maintaned for 9V <VS <16V. Extended ranges of 6V <<VS <9V and 16V <VS <40V yields full func- tionally but with relaxed performance. Over tem- perature protection and ESD protection to all pins ensures relability and reduces system integration failures. ................................................................................................... .................................................................................................... ........ March 1999 ® CHARGE PUMP TEMP OUT1 VS1 OUT2 IN2 PGND1 VS2 OUT3 OUT4 IN1 EN1 GND EN2 IN3 IN4 2nd FULL BRIDGE 1st FULL BRIDGE 5V REGULATOR EN1 EN1 EN1 EN2 40V 7V 7V 7V T1 T1 T2 T2 T1 T2 CHARGE PUMP D99AT423 BLOCK DIAGRAM SO28 ORDERING NUMBER: L9925 L9925 DMOS DUAL FULL BRIDGE DRIVER 1/9 |
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