Datasheet

ADP122/ADP123 Data Sheet
Rev. E | Page 6 of 24
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
ADP122
TOP VIEW
(Not to Scale)
1
VIN
2
GND
3
EN
5
VOUT
4
NC
NC = NO CONNECT
08399-004
Figure 5. ADP122 TSOT Fixed Output Pin Configuration
08399-137
TOP VIEW
(Not to Scale)
ADP122
3
GND
1
VOUT
2
NC
4
EN
6
VIN
5
NC
NOTES
1. NC = NOT CONNECT. THIS PIN CAN BE LEFT FLOATING
OR CONNECTED TO GROUND.
2. EXPOSED PAD MUST BE CONNECTED TO GND.
Figure 6. ADP122 LFCSP Fixed Output Pin Configuration
ADP123
TOP VIEW
(Not to Scale)
1
VIN
2
GND
3
EN
5
VOUT
4
ADJ
08399-003
Figure 7. ADP123 TSOT Adjustable Output Pin Configuration
08399-138
TOP VIEW
(Not to Scale)
ADP123
3
GND
1
VOUT
2
ADJ
4
EN
6
NOTES
1. NC = NOT CONNECT. THIS PIN CAN BE LEFT FLOATING
OR CONNECTED TO GROUND.
2. EXPOSED PAD MUST BE CONNECTED TO GND.
VIN
5
NC
Figure 8. ADP123 LFCSP Adjustable Output Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic Description
ADP122 ADP123
TSOT LFCSP TSOT LFCSP
1 6 1 6 VIN Regulator Input Supply. Bypass VIN to GND with a capacitor of at least 1 µF.
2 3 2 3 GND Ground.
3 4 3 4 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.
N/A N/A 4 2 ADJ Output Voltage Adjust Input. Connect the midpoint of an external divider from VOUT to
GND to this pin to set the output voltage.
4 2, 5 N/A 5 NC No Connect. These pins are not internally bonded. They can be left floating or connected
to ground.
5 1 5 1 VOUT Regulated Output Voltage. Bypass VOUT to GND with a capacitor of at least 1 µF.
N/A EP N/A EP EPAD Exposed Pad. The exposed pad must be connected to ground.