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Freescale Semiconductor, Inc.
Document order number: MC34920 Rev 1.
0, 01/2004
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Advance Information 2.
8 Ω (Typ) Quad H-Bridge Motor Driver
The 34920 is a multifunctional analog ASIC.
The 34920 integrates two circuits, four H-bridge drivers, a reset circuit in a single IC, and two DC/DC switching
voltage regulators.
Input
voltage is 21 V to 42 V DC.
Each motor of the two driver blocks can be configured as either a DC motor driver with pulse width modulation (PWM)-control or a single bipolar step motor driver.
In step motor mode, both drivers are capable of being operated in the quarter step mode.
In DC motor mode, both bridges in a dr...