Datasheet
Data Sheet ADP5023
Rev. D | Page 7 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
09889-002
2
1
3
4
5
6
18
17
16
15
14
13
NC
PGND2
NOTES
1. NC = NO CONNEC
T
. DO NOT CONNECT
T
O THIS PIN.
2. IT IS RECOMMENDED TH
A
T THE EXPOSED
P
AD
BE SOLDERED
T
O THE GROUND PLANE.
SW2
VIN2
AGND
AGND
MODE
PGND1
SW1
VIN1
A
VIN
AGND
8
9
10
11
7
FB2
VOUT2
VOUT1
FB1
12
EN1
EN2
20
19
21
VOUT3
FB3
VIN3
22
EN3
23
AGND
24
AGND
ADP5023
T
O
P VIEW
(Not to Scale)
Figure 2. Pin Configuration—View from Top of Die
Table 8. Pin Function Descriptions
Pin No. Mnemonic Description
1 AGND Analog Ground.
2 AGND Analog Ground.
3 VIN2 BUCK2 Input Supply (2.3 V to 5.5 V). Connect VIN2 to VIN1 and AVIN.
4 SW2 BUCK2 Switching Node.
5 PGND2 Dedicated Power Ground for BUCK2.
6 NC No Connect. Leave this pin unconnected or connect to ground.
7 EN2 BUCK2 Enable Pin. High level turns on this regulator, and low level turns it off.
8 FB2 BUCK2 Feedback Input. For device models with adjustable output voltage, connect this pin to the middle of the
BUCK2 resistor divider. For device models with fixed output voltage, leave this pin unconnected.
9 VOUT2 BUCK2 Output Voltage Sensing Input. Connect VOUT2 to the top of the capacitor on VOUT2.
10 VOUT1 BUCK1 Output Voltage Sensing Input. Connect VOUT1 to the top of the capacitor on VOUT1.
11 FB1 BUCK1 Feedback Input. For device models with adjustable output voltage, connect this pin to the middle of the
BUCK1 resistor divider. For device models with fixed output voltage, connect this pin to the top of the capacitor
on VOUT3.
12 EN1 BUCK1 Enable Pin. High level turns on this regulator, and low level turns it off.
13 MODE BUCK1/BUCK2 Operating Mode. MODE = high: forced PWM operation. MODE = low: auto PWM/PSM operation.
14 PGND1 Dedicated Power Ground for BUCK1.
15 SW1 BUCK1 Switching Node
16 VIN1 BUCK1 Input Supply (2.3 V to 5.5 V). Connect VIN1 to VIN2 and AVIN.
17 AVIN Analog Input Supply (2.3 V to 5.5 V). Connect AVIN to VIN1 and VIN2.
18 AGND Analog Ground.
19
FB3
LDO Feedback Input. For device models with adjustable output voltage, connect this pin to the middle of the LDO
resistor divider. For device models with fixed output voltage, leave this pin unconnected.
20 VOUT3 LDO Output Voltage.
21 VIN3 LDO Input Supply (1.7 V to 5.5 V).
22 EN3 LDO Enable Pin. High level turns on this regulator, and low level turns it off.
23 AGND Analog Ground.
24 AGND Analog Ground.
EPAD (EP) Exposed Pad. It is recommended that the exposed pad be soldered to the ground plane.