ADP124/ADP125
Data Sheet
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
VOUT
VOUT
1
2
3
4
8
7
6
5
VIN
VIN
NC
EN
VOUT
VOUT
ADJ
1
2
3
4
8
7
6
5
VIN
VIN
NC
EN
ADP124
ADP125
TOP VIEW
TOP VIEW
VOUT SENSE
GND
(Not to Scale)
(Not to Scale)
GND
NOTES
1. NC = NO CONNECT.
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
Figure 3. ADP124 Fixed Output MSOP Pin Configuration
Figure 5. ADP125 Adjustable Output MSOP Pin Configuration
VOUT
VOUT
1
2
3
4
8
7
6
5
VIN
VIN
NC
EN
VOUT
VOUT
ADJ
1
2
3
4
8
7
6
5
VIN
VIN
NC
EN
ADP124
TOP VIEW
(Not to Scale)
ADP125
TOP VIEW
(Not to Scale)
VOUT SENSE
GND
GND
NOTES
1. NC = NO CONNECT.
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
Figure 4. ADP124 Fixed Output LFCSP Pin Configuration
Figure 6. ADP125 Adjustable Output LFCSP Pin Configuration
Table 5. Pin Function Descriptions
Mnemonic
Pin No. ADP124
ADP125 Description
1
2
3
VOUT
VOUT
VOUT SENSE N/A
VOUT
VOUT
Regulated Output Voltage. Bypass VOUT to GND with a 1 µF or greater capacitor.
Regulated Output Voltage. Bypass VOUT to GND with a 1 µF or greater capacitor.
Feedback Node for the Error Amplifier. Connect to VOUT.
N/A
ADJ
Feedback Node for the Error Amplifier. Connect the midpoint of an external divider from VOUT to GND
to this pin to set the output voltage.
4
5
GND
EN
GND
EN
Ground.
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.
6
7
8
NC
NC
No Connect. This pin is not connected internally.
VIN
VIN
EPAD
VIN
VIN
EPAD
Regulator Input Supply. Bypass VIN to GND with a 1 µF or greater capacitor.
Regulator Input Supply. Bypass VIN to GND with a 1 µF or greater capacitor.
The exposed pad must be connected to ground.
Rev. C | Page 6 of 20
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