器件名称: FAN8404DTF
功能描述: 2 Phase Half Wave BLDC Motor Driver
文件大小: 89.95KB 共12页
简 介:www.fairchildsemi.com
FAN8404D
2 Phase Half Wave BLDC Motor Driver
Features
A wide range of operation voltage: 4V to 15V Built-in motor lock detector. Automatic restart function Alarm output for a motor lock detection Built-in thermal shut down circuits Built-in reverse current protection diode Compact package: 8-SOP-225
Description
The FAN8404D is a monolithic integrated circuit, and suitable for DC cooling fan motors.
8-SOP-225
1
Typical Applications
DC cooling fan motor
Ordering Information
Device FAN8404D FAN8404DTF Package 8-SOP-225 8-SOP-225 Operating Temp. 25°C ~ 85°C 25°C ~ 85°C
Rev.1.0.3
2002 Fairchild Semiconductor Corporation
FAN8404D
Block Diagram
OUTB
1
3
LD
2 Commutation & Control & TSD
AL
OUTA
7
VCC GND
4 5 6 IN+ IN-
8
Pin Definitions
Pin Number 1 2 3 4 5 6 7 8 Pin Name OUTB AL LD VCC IN+ IN OUTA GND I/O O O I I O Pin Function Description Motor output B Alarm output Triangle pulse generator for lock detector and automatic restart Supply voltage Hall input + Hall input Motor output A Ground Remark Open Collector -
2
FAN8404D
Equivalent Circuits
Description OUTB OUTA Pin No. 1 7
1 7 Commutation
Internal Circuit
AL
2
2 Lock detector
LD
3
3 Lock detector & Automatic restart
Commutation
VLDCP
VLDCL
IN+ IN-
5 6
5 6 Commutation
3
FAN8404D
Absolute Maximum Ratings (Ta = 25°C)
Parameter Maximum power supply voltage Maximum power dissipationnote1 Thermal resistancenote1 Maximum output voltage Maximum output current Alarm ……