Datasheet

ADP5041 Data Sheet
Rev. 0 | Page 8 of 40
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
09652-002
14
13
12
1
3
4
VOUT2
15
FB2
VIN2
FB1
11
VOUT1
FB3
VIN3
2
VOUT3
EN3
5
nRSTO
7
VIN1
6
AVIN
8
SW
9
PGND
10
EN1
19
WDI
20
MR
18
VTHR
17
MODE
16
EN2
ADP5041
TOP VIEW
(Not to Scale)
NOTES
1. EXPOSED PAD MUST BE CONNECTED TO
SYSTEM GROUND PLANE.
Figure 2. Pin Configuration—View from Top of the Die
Table 8. Pin Function Descriptions
Pin No. Mnemonic Description
1 FB3 LDO2 Feedback Input.
2 VOUT3 LDO2 Output Voltage.
3 VIN3 LDO2 Input Supply (1.7 V to 5.5 V).
4 EN3 Enable LDO2. EN3 = high: turn on LDO2; EN3 = low: turn off LDO2.
5 nRSTO Open-Drain Reset Output, Active Low.
6 AVIN Housekeeping and Supervisory Input Supply (2.3 V to 5.5 V).
7 VIN1 Buck Input Supply (2.3 V to 5.5 V).
8 SW Buck Switching Node.
9 PGND Dedicated Power Ground for Buck Regulator.
10 EN1 Enable Buck. EN1 = high: turn on buck; EN1 = low: turn off buck.
11 VOUT1 Buck Output Sensing Node.
12 FB1 Buck Feedback Input.
13 VIN2 LDO1 Input Supply (1.7 V to 5.5 V).
14 VOUT2 LDO1 Output Voltage.
15 FB2 LDO1 Feedback Input.
16 EN2 Enable LDO1. EN2 = high: turn on LDO1; EN2 = low: turn off LDO1.
17 MODE
Buck Mode. MODE = high; buck regulator operates in fixed PWM mode; MODE = low; buck regulator operates
in power saving mode (PSM) at light load and in constant PWM at higher load.
18 VTHR Reset Threshold Programming.
19 WDI Watchdog Refresh Input from Processor. If WDI is in high-Z, watchdog is disabled.
20
MR
Manual Reset Input, Active Low.
0 EPAD Exposed Pad (Analog Ground). The exposed pad must be connected to the system ground plane.