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APE8951 Datasheet(PDF) 3 Page - Advanced Power Electronics Corp.

Part No. APE8951
Description  1.5A ULTRA LOW DROPOUT LINEAR REGULATOR
Download  8 Pages
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Maker  A-POWER [Advanced Power Electronics Corp.]
Homepage  http://www.a-power.com.tw
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APE8951 Datasheet(HTML) 3 Page - Advanced Power Electronics Corp.

   
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Advanced Power
Electronics Corp.
APE8951
ELECTRICAL SPECIFICATIONS(Cont.)
Soft Start Time
TSS
-2
-
ms
EN Pin Logic High Threshold
Voltage
EN Hysteresis
-30
-
mV
EN Pin Pull-Up Current
IEN
EN=GND
-
10
-
uA
Current Limit
ILIM
VCNTL=3.3 ~ 5V, TJ=25
oC2
3
4
A
VCNTL=3.3 ~ 5V, TJ=-25~125
oC2
-
-
A
Under Voltage Threshold
VFB Falling
-
0.4
-
V
POK Threshold Voltage for Power
OK
VPOK
VFB Rising
89%
92%
95%
VFB
POK Threshold Voltage for Power
Not OK
VPNOK
VFB Falling
78%
81%
84%
VFB
POK Low Voltage
POK Sinks 5mA
-
0.25
0.4
V
POK Delay Time
TDELAY
0.8
2
10
ms
Thermal Thutdown Temp
TSD
-
150
-
ºC
Thermal Thutdown Hysteresis
-
50
-
ºC
PIN DESCRIPTIONS
PIN SYMBOL
PIN DESCRIPTION
GND
GND Pin
FB
Feedback Pin
VOUT
IC Power Supply Pin
EN
H : Normal Operation ; L : Shutdown
POK
Power OK Output Pin
VCNTL
CNTL Pin Input Voltage
VIN
Input Voltage
3
VENH
Enable
0.4
0.8
1.2
V
BLOCK DIAGRAM
-
+
VIN
VOUT
GND
Error
Amp
EN
VCNTL
Soft-Start
And
Control Logic
Power -ON
Reset
Current
Limit
Enable
Thermal
Shutdown
Bandgap
FB
POK
Delay
POK
-
+
UV
0.4V
90%
Vref
N-MOSFET


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