AM9789
AM9789 is Single Phase Full-wave Motor Driver manufactured by BCD.
Description
The AM9789 is a single-phase, full wave motor driver suited for DC fan motor, and its speed is controlled by PWM input signal. It is suitable for both game machine and CPU cooler which need silent drivers. It features lock protection, thermal shutdown, PWM control, low noise and so on.
The AM9789 is available in MSOP-8, MSOP-10 DFN-3×3-8 and DFN-3×3-10 packages.
Features
- BTL Output Single-phase Full-wave Linear Driver
- Silent Driver
- Low Supply Current (Normal Operation，Less than 4m A)
- Low Standby Current (PWM=0 Duty) @
Supply Current Less than 200µA
- Speed Controllable by PWM Input Signal
- Built-in Quick Start Function
- Built-in Lock Protection and Auto Restart
Function
- Built-in Hall Bias Circuit
- Built-in FG Output
- Built-in Thermal Shutdown Circuit
- Built-in Over Current Protection Circuit
Applications
- Silent Fan Motors
MSOP-8
MSOP-10
DFN-3×3-8
DFN-3×3-10
Figure 1. Package Types of AM9789
Oct. 2012 Rev. 1. 1
BCD Semiconductor Manufacturing Limited 1
Data Sheet
Single Phase Full-wave Motor Driver for Silent Fan Motor AM9789
Pin Configuration
M8 Package (MSOP-8)
18 27 36 45
MM Package (MSOP-10)
1 10 29 38 47 56
DN8 Package (DFN-3×3-8)
Pin 1 Mark
18 27 36 45
DN Package (DFN-3×3-10)
Pin 1 Mark
1 10 29 38 47 56
Figure 2. Pin Configuration of AM9789 (Top...
