Datasheet

MCP16331
DS20005308C-page 32  2014-2016 Microchip Technology Inc.
FIGURE 7-3: Multiple Outputs Buck Converter 10V-40V Input Voltage to 2x5V and 3.3V Output
Voltages.
(2)
Component Value Manufacturer Part Number Comment
C
IN
2 x 10 µF TDK Corporation C3225X7R1H106M250AC Capacitor, Ceramic, 10 µF, 50V, 20%,
X7R, SMD, 1210
C
OUT
, C1 10 µF TDK Corporation C3216X7R1E106K160AB Capacitor, Ceramic, 10 µF, 25V, 10%,
X7R, SMD, 1206
C2, C3 1 µF TDK Corporation CGA4J3X7R1E105K125AB Capacitor, Ceramic,1 µF, 25V, 10%, X7R,
SMD, 0805
L1 10 µH Wurth Elektronik
®
744874100 744874100, 10 µH, Shielded Coupled
Inductors
R
T
52.3 k  Panasonic
®
- ECG ERJPA3F5232V Resistor, 52.3 KΩ, 1/10W, 1%, 0603, SMD
R
B
10 k  Panasonic - ECG ERJ-3EKF1002V Resistor, 10.0 KΩ, 1/10W, 1%, 0603, SMD
D1 MBR0530 Fairchild
Semiconductor
®
MBR0530 Schottky Rectifier, 30V, 500 mA, SOD-123
D2 STPS2L60A STMicroelectronics STPS2L60A Schottky, 60V, 2A, SMA
D
B
1N4148 Diodes
Incorporated
®
1N4148WS-7-F Diode Switch, 75V, 200 mW, SOD-323
C
B
100 nF AVX Corporation 0603YC104KAT2A Capacitor, 0.1 µF, 16V, Ceramic, X7R,
0603, 10%
U1 MCP1755 Microchip
Technology Inc.
MCP1755S-3302E/DB MCP1755, 3.3V LDO, 300 mA, SOT-223-3
U2 MCP16331 Microchip
Technology Inc.
MCP16331-E/CH
MCP16331-E/MNY
MCP16331, 500 kHz Buck Switcher, 50V,
500 mA
V
IN
EN
GND
SW
V
IN
10V-40V
V
OUT
5V
C
OUT
2x10µF
C
IN
2x10µF
L1B
(1)
10
µH
52.3 k 
10 k
OFF
ON
R
T
R
B
MCP16331
2A, 60V
D2
BST
1N4148
C
B
0.1 µF
FB
10
µH
L1A
(1)
D1
C
1
10 µF
C
3
1µF
C
2
1µF
V
OUT2S
3.3V
V
OUT1S
5V
SGND
SGND
Note 1: L1A and L1B are mutually coupled.
2: Please refer to the Application Note: AN2102 “Designing Applications with MCP16331 High-Input 
Voltage Buck Converter” (DS00002102), which can be found on the www.microchip.com web site.
U1
U2
D
B
V
IN
V
OUT
GND
MCP1755