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Diodes AM4962 User Manual

Data sheet, General description, Features

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Data Sheet

SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER AM4962

Apr. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

1






General Description

The AM4962 is a full wave driver IC with direct
PWM control function. It is used for single phase
motor and is capable of speed control by PWM pulse.

The AM4962 is available in HTSSOP-14 and
SSOP-16 packages.






Features


The Motor Speed is Controlled by PWM Pulse
Directly

Built-in Triangle Wave Circuit Without Extra
Oscillation Capacitor

Built-in Hall Bias Circuit

Built-in Minimal Speed Setup Circuit

• Slope

K*

Adjustable

Rotation Speed Indication (FG)

Rotation or Lock State Indication (RD)

Built-in Thermal Shutdown Circuit

Lock Protection and Auto-restart

Output Current Limit


* Slope K is the slope of output PWM duty vs. input
PWM duty

Applications

CPU Cooler Fan in PC

Brushless DC Motor Driver













Figure 1. Package Types of AM4962


HTSSOP-14 SSOP-16