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FAN8408D

Fairchild Semiconductor
Part Number FAN8408D
Manufacturer Fairchild Semiconductor
Description 2 Phase Half Wave BLDC Motor Driver
Published Mar 30, 2005
Detailed Description www.fairchildsemi.com FAN8408D 2 Phase Half Wave BLDC Motor Driver Features • • • • • • • A wide range of operation vo...
Datasheet PDF File FAN8408D PDF File

FAN8408D
FAN8408D

Overview
www.
fairchildsemi.
com FAN8408D 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 Hall output for a motor speed detection Built-in thermal shut down circuits Built-in reverse current protection diode Compact package: 8-SOP-225 Description The FAN8408D 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 FAN8408D FAN8408DTF Package 8-SOP-225 8-SOP-225 Operating Temp.
−25°C ~ 85°C −25°C ~ 85°C Rev.
1.
0.
4 ©2002 Fairchild Semiconductor Corporation FAN8408D Block Diagram OUTB 1 3 LD 2 Commutation & Control & TSD HO 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 HO LD VCC IN+ IN− OUTA GND I/O O O I I O Pin Function Description Motor output B Hall output Triangle pulse generator for lock detector and automatic restart Supply voltage Hall input + Hall input − Motor output A Ground Remark Open Collector - 2 FAN8408D Equivalent Circuits Description OUTB OUTA Pin No.
1 7 1 7 Commutation Internal Circuit HO 2 2 Commutation LD 3 3 Lock detector & Automatic restart Commutation VLDCP VLDCL IN+ IN- 5 6 5 6 Commutation 3 FAN8408D Absolute Maximum Ratings (Ta = 25°C) Parameter Maximum power supply voltage Maximum power dissipationnote1 Thermal resistancenote1 Maximum output voltage Maximum output current Hall output current Hall output withstanding voltage Maximum hall input ac level Operating temperature Storage temperature Symbol VCCMAX PDMAX ΘJA VOMAX IOMAX IHO VHO VHACMAX TOPR TSTG Value 18 429note2 620note3 291.
61note2 201.
52note3 30 1.
2note4 10 36 6 −25 ~ 85 −55 ~ 150 Unit V mW °C/W V A mA V V °C °C Note1: PCB Condition: Thickness(1.
6mm), Dimension(76.
2mm * 114.
3mm) Refer: EIA/J SED 51-3 & EIA/J SED 51-7 Note2: Air condition (0m/s) Note3: Air condition (3m/s) Note4: Should not exceed PD ...


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