Pin Descriptions
AP1120
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
NAME
FUNCTION
GND1/2
3.3V(Vout1)
2.5V/1.8V
(Vout2)
VIN1/2
Ground
The output of the regulator. A
minimum of 10uF capacitor
(0.15Ω ≤ ESR ≤ 20Ω) must
be connected from this pin to
ground to insure stability.
The input pin of regulator.
Typically a large storage
capacitor (0.15Ω ≤ ESR ≤
20Ω) is connected from this
pin to ground.
Block Diagram
2
Vin 1
Thermal
Shutdown
4
Vin 2
Thermal
Shutdown
7,8
Vout 1
+
+
1.25V +
CURRENT
LIMIT
+
1
GND 1
5,6
Vout 2
+
+
1.25V +
CURRENT
LIMIT
+
3
GND 2
AP1120 Rev. 1
2 of 7
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SEPTEMBER 2006
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