Datasheet

ADP5041 Data Sheet
Rev. 0 | Page 36 of 40
The reliable operation of the buck regulator and the LDO
regulator can be achieved only if the estimated die junction
temperature of the
ADP5041 (Equation 14) is less than 125°C.
Reliability and mean time between failures (MTBF) is highly
affected by increasing the junction temperature. Additional
information about product reliability can be found in the
Analog Devices, Inc., Reliability Handbook, which is available
at http://www.analog.com/reliability_handbook.
APPLICATION DIAGRAM
ON
OFF
FPWM
PWM/PSM
R
FILT
30Ω
SW
PGND
MODE
C4
10µF
L1
1µH
VIN1
EN3
EN1
VIN2
VIN3
EN2
AGND
VOUT2
VOUT1
FB3
VOUT3
VTHR
WDI
nRSTO
C1
4.7µF
AVIN
C2
1µF
C3
1µF
EN_BK
BUCK
EN_LDO1
LDO1
(DIGITAL)
EN_LDO2
LDO2
(ANALOG)
SUPERVISOR
ON
OFF
ON
OFF
4
20
16
13
10
7
6
3
EP
1
19
5
14
FB2
FB1
15
17
9
11
8
12
WDOG
RESET
PUSH-BUTTON
RESET
MR
MAIN
MICROCONTROLLER
09652-103
R2
R1
2
R7
R8
C6
2.2µF
18
VTH
R9
R4
R3
V
OUT1
AT
1.2A
R6
R5
V
DD
C5
2.2µF
V
IN1
= 2.3V
TO 5.5V
V
IN2
= 1.7V
TO 5.5V
V
IN3
= 1.7V
TO 5.5V
V
OUT2
AT
300mA
V
OUT3
AT
300mA
Figure 113. Application Diagram