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AP1163 Datasheet(PDF) 8 Page - Asahi Kasei Microsystems

Part No. AP1163
Description  1000mA LDO Regulator with Over/Under Voltage Detection Function
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Maker  AKM [Asahi Kasei Microsystems]
Homepage  http://www.akm.com
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AP1163 Datasheet(HTML) 8 Page - Asahi Kasei Microsystems

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[AP1163]
018002684-E-00
2018/05
- 8 -
10. Functional Descriptions
10.1
ON/OFF Control of Regulator Output
Regulator output is enabled by setting the voltage level of the EN pin higher than VENH. Regulator
output is disabled by setting the EN pin voltage lower than VENL.
10.2
Protection Functions
1) Over Current Limit Protection
The AP1163 controls output transistor to prevent that the OUT pin output current exceeds a defined
value (IOCPTRIP13). VOUT level returns to normal value when the output current becomes a rated
value.
2) Thermal Shutdown
The output transistor is turned OFF when Tj exceeds a defined value (TSD). It returns to normal
operation when Tj becomes less than a defined value (TSD - TSDH).
3) Undervoltage Detection
The open collector output of the UVoutB pin is turned ON when VOUT becomes less than a defined
value (VTHUV). It becomes high impedance when VOUT becomes more than the defined value
(VTHUV).
4) Overvoltage Detection
The open collector output of the OVoutB pin is turned ON when VOUT exceeds a defined value
(VTHOV). It becomes high impedance when VOUT becomes less than the defined value.
 Example 1: The EN pin voltage is supplied externally and the UVoutB and OVoutB pins are pulled up
by the IN pins.
IN
AP1163
GND
EN
OUT
UVoutB
OVoutB
IN
EN
OVoutB
UVoutB
OUT
IN
EN
OUT
UVoutB
OVoutB
UV Threshold
OV Threshold
Figure 3. Example 1


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