ADP5040 Analog Devices, ADP5040 Datasheet - Page 7

• Manufacturer Part Number: ADP5040
• Description: Micro PMU with 1.2 A Buck Regulator and Two 300 mA LDOs
• Manufacturer: Analog Devices

Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 7. Preliminary Pin Function Descriptions
Pin No.
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
17
5, 18, 19, 20
0
Mnemonic
FB3
VOUT3
VIN3
EN3
AVIN
VIN1
SW
PGND
EN1
VOUT1
FB1
VIN2
VOUT2
FB2
EN2
MODE
NC
EPAD
Description
LDO2 Feedback Input.
LDO2 Output Voltage.
LDO2 Input Supply (1.7 V to 5.5 V).
Enable LDO2. EN3 = high: turn on LDO2; EN3 = low: turn off LDO2.
Housekeeping Input Supply (2.3 V to 5.5 V).
Buck Input Supply (2.3 V to 5.5 V).
Buck Switching Node.
Dedicated Power Ground for Buck Regulator.
Enable Buck. EN1 = high: turn on buck; EN1 = low: turn off buck.
Buck Output Sensing Node.
Buck Feedback Input.
LDO1 Input Supply (1.7 V to 5.5 V).
LDO1 Output Voltage.
LDO1 Feedback Input.
Enable LDO1. EN2 = high: turn on LDO1; EN2 = low: turn off LDO1.
Buck Mode. Mode = high: buck regulator operates in fixed PWM mode; mode = low: buck regulator operates in
power save mode (PSM) at light load and in constant PWM at higher load.
Not Connected.
Exposed Pad. ( AGND = Analog Ground). The exposed pad must be connected to the system ground plane.
Figure 2. Pin Configuration—View from Top of the Die
NOTES
1. EXPOSED PAD MUST BE CONNECTED TO
VOUT3
SYSTEM GROUND PLANE.
VIN3
FB3
EN3
NC
1
4
5
2
3
(Not to Scale)
Rev. 0 | Page 7 of 40
ADP5040
TOP VIEW
15 FB2
14
13
12
11 VOUT1
VIN2
VOUT2
FB1
ADP5040