Designed for pulse-width-modulated (PWM) control of DC
motors, the A4955 is capable of 50 V operation and provides
gate drive for an all N-channel external MOSFET bridge.
Input terminals are provided for use in controlling the speed and
direction of a DC motor with externally applied PWM control
signals. Internal synchronous rectification control circuitry is
provided to lower power dissipation during PWM operation.
Internal circuit protection includes VDS protection, thermal
shutdown with hysteresis, undervoltage monitoring of VBB,
and crossover-current protection.
The A4955 is supplied in a low-profile 4×4 mm, 20-contact
QFN package (suffix “ES”) and a 20-lead eTSSOP (suffix
“LP”), both with exposed thermal pad.
