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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： | 16/30页 |
| 文件大小： | 836K |
| 代理商： | TDA21801 |
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FanControl
Page 23 of 30
DS-FanControl-TDA21801
6.8 Under Voltage Lockout Block
At the power ON/OFF, until the VDD is below 3V the FanM, RC-VCO and TRSOUT pins are all set up to
high impedance state (oscillation and OTP warning not allowed). When VDD is crossing between 3 and
7V, FanM is switched to Low level, OTP is still not activated and TRSOUT pulled up to VDD.
12V
7V
3V
TRSOUT
V
DD
FanM
RC -VCO
3.6V
1.2V
Lockout condition
- FanM
Low or high impedance
- RC-VCO
OTP not activate
- TRSOUT High impedance
Reset Condition
- FanM
Low or high impedance
- RC
OTP not activat
- TRSOUT High impedance
12V
7V
3V
TRSOUT
V
DD
FanM
RC -VCO
3.6V
1.2V
Fig.12 Power Up main waveforms transitory
12V
6.5V
3V
TRSOUT
V
DD
FanM
RC - VCO
Lockout condition
- TRSout
High Impedance
Reset Condition
- FanM
At low level
- RC-VCO
OTP not activate
- TRSout
High impedance
3.6V
1.2V
12V
6.5V
3V
TRSOUT
V
DD
FanM
RC - VCO
3.6V
1.2V
- FanM
Low or High Impedance
- RC-VCO
OTP not activate
Fig.13 Power Down main waveforms transitory
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