Datasheet

Data Sheet ADP7182
Rev. C | Page 7 of 28
10703-005
3NC
4EN
1
VOUT
2VOUT
6
GND
5
NC
8 VIN
7 VIN
ADP7182
TOP VIEW
(Not to Scale)
EXPOSED PAD
NOTES
1. NC = NO CONNECT. DO NOT CONNECT
TO THIS PIN.
2.
THE EXPOSED PAD ON THE BOTTOM OF THE LFCSP PACKAGE ENHANCES
THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED TO VIN
INSIDE THE PACKAGE. THE EXPOSED PAD MUST BE CONNECTED TO THE
VIN PLANE ON THE BOARD FOR PROPER OPERATION. BECAUSE THIS IS A
NEGATIVE VOLTAGE REGULATOR, VIN IS THE MOST NEGATIVE POTENTIAL
IN THE CIRCUIT.
Figure 5. 8-Lead LFCSP Pin Configuration, Fixed Output Voltage
10703-006
3ADJ
4EN
1VOUT
2VOUT
6 GND
5 NC
8 VIN
7 VIN
ADP7182
TOP VIEW
(Not to Scale)
EXPOSED PAD
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2. THE EXPOSED PAD ON THE BOTTOM OF THE LFCSP PACKAGE ENHANCES
THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED TO VIN
INSIDE THE PACKAGE. THE EXPOSED PAD MUST BE CONNECTED TO THE
VIN PLANE ON THE BOARD FOR PROPER OPERATION. BECAUSE THIS IS A
NEGATIVE VOLTAGE REGULATOR, VIN IS THE MOST NEGATIVE POTENTIAL
IN THE CIRCUIT.
Figure 6. 8-Lead LFCSP Pin Configuration, Adjustable Output Voltage
Table 6. 8-Lead LFCSP Pin Function Descriptions
LFCSP Pin No.
Fixed Output Voltage Adjustable Output Voltage Mnemonic Description
1, 2 1, 2 VOUT Regulated Output Voltage. Bypass VOUT to GND with a 2.2 µF or
greater capacitor.
Not applicable 3 ADJ Adjustable Input. An external resistor divider sets the output voltage.
3
Not applicable
NC
No Connect. Do not connect to this pin.
4 4 EN Drive EN 2 V above or below ground to enable the regulator, or
drive EN to ground to turn off the regulator. For automatic startup,
connect EN to VIN.
5 5 NC No Connect. Do not connect to this pin.
6 6 GND Ground.
7, 8 7, 8 VIN Regulator Input Supply. Bypass VIN to GND with a 2.2 µF or greater
capacitor.
9 9 EPAD Exposed pad. The exposed pad on the bottom of the LFCSP package
enhances thermal performance and is electrically connected to VIN
inside the package. The exposed pad must be connected to the VIN
plane on the board for proper operation. Because this is a negative
voltage regulator, VIN is the most negative potential in the circuit.