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Part: FAN8461G
Category:
Description: DC Cooling Fan Single Phase Driver
Company: Fairchild Semiconductor
Datasheet: Download FAN8461G datasheet File size : 400 kB
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FAN8461G
Single Phase Full Wave BLDC Motor Driver
Description Features
· A wide range of operating voltage: 2.8V to 28V · Locked rotor protection with open collector output and auto retry · Open collector FG output. · Open collector Alarm output. · TSD protection. The FAN8461G is a single phase BLDC motor driver and it's typical application is DC cooling fans with wide range of supply voltage(3.3/5/12/24V).
Typical Applications
· CPU Cooling Fans · Instrumentation Fans · Desktop PC Fans
Ordering Information
Device FAN8461G FAN8461GX Package 10-SSOP 10-SSOP Operating Temp. -30°C ~ 90°C -30°C ~ 90°C
Rev.1.0.2
©2003 Fairchild Semiconductor Corporation
FAN8461G
Block Diagram
8 7
VCC VM
FG
10
4
OUT1
Commutation & Control & TSD
AL
9
H+ H-
2 1
6
OUT2
Lock Detection & Auto Restart
LD
3
VLDCP
5
GND
VLDCL
2
FAN8461G
Pin Definitions
Pin Number
1 2 3 4 5 6 7 8 9 10
Pin Name
H- H+ LD OU T 1 GND OU T 2 VM VCC AL FG
I/O
A A A A P A P P O O
Pin Function Description
Hall input Hall input + Sawtooth wave generator for lock detector and automatic restart Motor output 1 Ground Motor output 2 Motor power supply Logic power supply Alram output Speed output
Remark
-
Open collector Open collector
3
FAN8461G
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Maximum power supply voltage Thermal resistance Maximum power dissipation Maximum output voltage Maximum output current Maximum output peak current Maximum FG/Alarm output current FG/Alarm output sustain voltage Hall output withstanding voltage Operating temperature Storage temperature
note 1 : Should not exceed PD or ASO value. 2 : IOPEAK time is within 2us.
Symbol
VCCMAX,VMMAX R ja PDMAX VOMAX IO M A X IOPEAK IFG/AL VFG/AL VHO TOPR T STG
Value
32 150 800 36 0.8
note
Unit
V
oC/W
mW V A A mA V V °C °C
1.2note 5 36 36 -30 ~ 90 -55 ~ 150
Recommended Operating Conditions (Ta = 25°C)
Parameter
Supply voltage
Symbol
VCC
Min.
2.8
Typ.
-
Max.
28
Unit
V
Power Dissipation Curve
1.0
0.5
0
0
25
50
75
100
125
150
175
Ambient temperature, Ta [°C]
PCB condition : When mounted on 76.2mm × 114mm × 1.57mm PCB (glass epoxy material).
4
FAN8461G
Equivalent Circuits
Description Pin No. Internal Circuit
VCC
Hall input
1,2
1
2
VCC
LD 3
3
VM
Output
4,6
4 6
9
10
FG/AL
9 , 10
5
Others parts begin by fa
FA-1 FA-2 FA-3 FA-4 FA-5 FA-6 FA-7 FA-8 FA-9 FA-10 FA-11 FA-12 FA-13 FA-14 FA-15 FA-16 FA-17
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