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 200µA from the battery. The charge pump is integrated on chip; no exter- nal components are required. Full performance is maintaned for 9V The L9925 dual full‑bridge driver is designed for stepper‑motor and other inductive‑load applications. It combines logic circuits, precise linear blocks and power DMOS transistors in a BCD process, providing high current capability with low heat dissipation. All inputs are CMOS‑compatible and the device includes an integrated charge pump, eliminating the need for external components. Key features include low quiescent current (<200 nA), over‑temperature, cross‑conduction, short‑circuit and ESD protection, as well as a wide supply voltage range (9 V‑16 V for normal operation, up to 40 V pulse). The datasheet details pin functions, electrical characteristics, thermal data, mechanical dimensions and application guidelines. It can tolerate up to 40 V for short pulses and up to 26 V continuous supply. Yes, the charge pump is integrated on‑chip, so no external components are required.
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Specifications
Supply Voltage Pulse (max) 40 V Total Power Dissipation (Tpins=80 °C) 5 W On‑Resistance (RDS(on)) 0.75 Ω (typical at 25 °C) Frequently asked questions
What is the maximum supply voltage the L9925 can handle?
Does the L9925 include an integrated charge pump?