ADP125 Analog Devices, ADP125 Datasheet - Page 6

• Manufacturer Part Number: ADP125
• Description: 5.5V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulator w/External Voltage Divider
• Manufacturer: Analog Devices

ADP124/ADP125
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 5. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
Figure 3. ADP124 Fixed Output MSOP Pin Configuration
Figure 4. ADP124 Fixed Output LFCSP Pin Configuration
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
ADP124
VOUT
VOUT
VOUT SENSE
N/A
GND
EN
NC
VIN
VIN
EPAD
VOUT SENSE
VOUT SENSE
Mnemonic
VOUT
VOUT
GND
VOUT
VOUT
GND
1
2
3
4
1
2
3
4
ADP125
VOUT
VOUT
N/A
ADJ
GND
EN
NC
VIN
VIN
EPAD
(Not to Scale)
(Not to Scale)
ADP124
ADP124
TOP VIEW
TOP VIEW
Description
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.
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.
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.
No Connect. This pin is not connected internally.
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.
8
7
6
5
8 VIN
7 VIN
6 NC
5 EN
VIN
VIN
NC
EN
Rev. A | Page 6 of 20
Figure 5. ADP125 Adjustable Output MSOP Pin Configuration
Figure 6. ADP125 Adjustable Output LFCSP Pin Configuration
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND.
VOUT
VOUT
GND
VOUT
VOUT
ADJ
GND
ADJ
1
2
3
4
1
2
3
4
(Not to Scale)
(Not to Scale)
ADP125
ADP125
TOP VIEW
TOP VIEW
8
7
6
5
8 VIN
7 VIN
6 NC
5 EN
VIN
VIN
NC
EN