ADP5034 Analog Devices, ADP5034 Datasheet - Page 7

• Manufacturer Part Number: ADP5034
• Description: Dual 3 MHz, 1200mA Buck Regulator with Two 300 mA LDOs
• Manufacturer: Analog Devices

Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 7. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
EPAD
Mnemonic
FB4
EN4
VIN2
SW2
PGND2
NC
EN2
FB2
VOUT2
VOUT1
FB1
EN1
MODE
PGND1
SW1
VIN1
AVIN
AGND
FB3
VOUT3
VIN3
EN3
VIN4
VOUT4
EP
Description
LDO2 Feedback Input. For device models with a adjustable output voltage, connect this pin to the middle of the
LDO2 resistor divider. For device models with a factory programmed output voltage, connect FB4 to the top of the
capacitor on VOUT4.
LDO2 Enable Pin. High level turns on this regulator, and low level turns it off.
BUCK2 Input Supply (2.3 V to 5.5 V). Connect VIN2 to VIN1 and AVIN.
BUCK2 Switching Node.
Dedicated Power Ground for BUCK2.
No Connect. Leave this pin unconnected.
BUCK2 Enable Pin. High level turns on this regulator, and low level turns it off.
BUCK2 Feedback Input. For device models with an adjustable output voltage, connect this pin to the middle of the
BUCK2 resistor divider. For device models with a fixed output voltage, leave this pin unconnected.
BUCK2 Output Voltage Sensing Input. Connect VOUT2 to the top of the capacitor on VOUT2.
BUCK1 Output Voltage Sensing Input. Connect VOUT1 to the top of the capacitor on VOUT1.
BUCK1 Feedback Input. For device models with an adjustable output voltage, connect this pin to the middle of the
BUCK1 resistor divider. For device models with a fixed output voltage, leave this pin unconnected.
BUCK1 Enable Pin. High level turns on this regulator, and low level turns it off.
BUCK1/BUCK2 Operating Mode. MODE = high: forced PWM operation. MODE = low: auto PWM/PSM operation.
Dedicated Power Ground for BUCK1.
BUCK1 Switching Node.
BUCK1 Input Supply (2.3 V to 5.5 V). Connect VIN1 to VIN2 and AVIN.
Analog Input Supply (2.3 V to 5.5 V). Connect AVIN to VIN1 and VIN2.
Analog Ground.
LDO1 Feedback Input. For device models with an adjustable output voltage, connect this pin to the middle of the
LDO1 resistor divider. For device models with a factory programmed output voltage, connect FB3 to the top of the
capacitor on VOUT3.
LDO1 Output Voltage.
LDO1 Input Supply (1.7 V to 5.5 V).
LDO1 Enable Pin. High level turns on this regulator, and low level turns it off.
LDO2 Input Supply (1.7 V to 5.5 V).
LDO2 Output Voltage.
Exposed Pad. It is recommended that the exposed pad be soldered to the ground plane.
Figure 2. Pin Configuration—View from the Top of the Die
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2. IT IS RECOMMENDED THAT THE EXPOSED PAD
BE SOLDERED TO THE GROUND PLANE.
PGND2
VIN2
SW2
FB4
EN4
NC
1
2
3
4
5
6
Rev. A | Page 7 of 28
(Not to Scale)
ADP5034
TOP VIEW
PIN 1
INDICATOR
18
17
16
15
14
13
AGND
AVIN
VIN1
SW1
PGND1
MODE
ADP5034