Datasheet

ADP121 Data Sheet
Rev. G | Page 6 of 20
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
NC = NO CONNECT
TOP VIEW
(Not to Scale)
1
2
3
5
4
06901-003
VIN
GND
EN
VOUT
NC
1 2
A
B
TOP VIEW
(Not to Scale)
06901-004
VIN VOUT
EN GND
Figure 3. 5-Lead TSOT Pin Configuration Figure 4. 4-Ball WLCSP Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic Description
TSOT WLCSP
1 A1 VIN Regulator Input Supply. Bypass VIN to GND with a 1 µF or larger capacitor.
2 B2 GND Ground.
3 B1 EN Enable Input. Drive EN high to turn on the regulator; drive EN low to turn off the regulator. For automatic
startup, connect EN to VIN.
4 N/A NC No Connect. Not connected internally.
5
A2
VOUT
Regulated Output Voltage. Bypass VOUT to GND with a 1 µF or greater capacitor.