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参数资料
| 型号： | TDA21801 |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 运动控制电子 |
| 英文描述： | AC MOTOR CONTROLLER, PDSO8 |
| 封装： | GREEN, PLASTIC, DSO-8 |
| 文件页数： | 25/30页 |
| 文件大小： | 836K |
| 代理商： | TDA21801 |
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FanControl
Page 4 of 30
DS-FanControl-TDA21801
1. Features
Low cost Fan Speed Controller for standard two wires fans
No external components for fan speed loop compensation necessary
Tacho output signal, FanM for speed measurement
Adjustable minimum Fan Speed
External control voltage for fan speed setting
System Overtemperature Protection for early warning and for system shutdown.
2. Applications
Fan Speed Control for PC Desktop Silver Box Power Supply
3. Pinout and Description
1
2
3
4
8
6
5
7
FCin
RSin
TRSOUT
GND
VDD
NTC
FanM
RC-VCO
TOP VIEW
TDA21801
1
2
3
4
8
6
5
7
FCin
RSin
TRSOUT
GND
VDD
NTC
FanM
RC-VCO
TOP VIEW
TDA21801
N°
Name
Description
1
FCin
Analog input for external speed control
2
RSin
Sense-resistor input signal
3
TRSOUT
Output to drive the external PNP transistor
4
GND
Ground
5
RC-VCO
VCO adjustment for minimum (minimal) frequency and OTP-psu-shut-down.
6
FanM
Digital output for speed monitoring. Two pulses per revolution signal. Monitor for
OTP-early warning and OTP-psu-shut-down warning.
7
NTC
Analog input for temperature sensor (NTC divider)
8
VDD
Supply voltage
Type
Package
Marking
Ordering Code
TDA21801
PG-DSO-8
21801
Q67042-S4257
TDA21801 Low Cost Fan Speed Controller
PG-DSO-8
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