Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 General Description Features The AM4953 is a single-phase BTL output fan motor BTL Output Single-phase Full-wave Linear driver designed by bipolar process. This IC Drive (Gain Resistor=1k to 360k, Gain=51dB) features high efficiency, silent operation and includes Support Low-voltage Drive and Feature a Wide lock shutdown and automatic restart functions. When Usable Voltage Range (2.2V to 16V) the motor is under lock condition, the lock Low Saturation Output (High Side and Low Side shutdown function turns off the output current. When Saturation Voltage): V =1.2V (typical, SAT TOTAL the lock condition is removed, the IC will I =300mA) OUT restart automatically and allow DC fan to run. It is Built-in Lock Protection and Automatic Restart applied for high reliability and low noise application, Circuits such as personal computers, notebook, car audio, Built-in FG/RD Output CPU cooling systems and power supplies in Built-in Hall Sensor Bias (V =1.45V) HB consumer electronics systems. Thermal Protection Circuit Small-sized, High Thermal Capacity Package The AM4953 is available in MSOP-10, SSOP-10, MSOP-8, SOIC-8 and PSOP-8 packages. Applications Notebook, Personal Computers Power Supplies in Consumer Electronics, Car Audio CPU Cooling Systems MSOP-10 SSOP-10 MSOP-8 SOIC-8 PSOP-8 Figure 1. Package Types of AM4953 Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 1 Data Sheet BTL Drive Single-phase Full-wave Fan Motor Driver AM4953 Pin Configuration MM Package M8 Package (MSOP-10) (MSOP-8) 1 10 RD IN+ 8 IN+ 1 RD HB 2 9 FG VCC IN- 2 7 VCC IN- 3 8 3 6 OUT2 CT CT 4 OUT2 7 5 GND OUT1 4 6 GND OUT1 5 GS Package (SSOP-10) IN+ 1 10 RD 2 9 HB FG 3 8 VCC IN- CT OUT2 4 7 OUT1 5 6 GND M Package MP Package (SOIC-8) (PSOP-8) 8 IN+ 8 FG IN+ 1 FG/RD 1 VCC IN- 2 7 IN- 2 7 VCC 3 6 OUT2 CT 3 6 OUT2 CT GND 5 GND OUT1 4 5 OUT1 4 Figure 2. Pin Configuration of AM4953 (Top View) Apr. 2012 Rev. 1. 5 BCD Semiconductor Manufacturing Limited 2