Preliminary Datasheet
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR
AP2121
Pin Configuration
N Package
(SOT-23-3)
VIN
3
1
2
GND
VOUT
K Package
(SOT-23-5)
VIN
GND
CE
15
2
34
VOUT
NC
Figure 2. Pin Configuration of AP2121 (Top View)
Pin Description
Pin Number
SOT-23-3 SOT-23-5
3
1
1
2
3
4
2
5
Pin Name
Function
VIN
GND
CE
NC
VOUT
Input voltage
Ground
Active high enable input pin. Logic high=enable, logic low=shutdown
No connection
Regulated output voltage
Mar. 2007 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2