Datasheet

MCP16331
DS20005308C-page 30  2014-2016 Microchip Technology Inc.
7.0 NON-TYPICAL APPLICATION
CIRCUITS
For additional information, 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.
FIGURE 7-1: Inverting Buck-Boost Application, 9V-16V V
IN
to -5V V
OUT.
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
2 x 10 µF TDK Corporation C3216X7R1E106K160AB Capacitor, Ceramic, 10 µF, 25V, 10%,
X7R, SMD, 1206
L 22 µH Coilcraft
®
MSS1048-223MLC MSS1048-223MLC, 22 µH, Shielded
Power Inductor
R
TOP
52.3 k  Panasonic
®
- ECG ERJPA3F5232V Resistor, 52.3 KΩ, 1/10W, 1%, 0603, SMD
R
BOT
10 k  Panasonic - ECG ERJ-3EKF1002V Resistor, 10.0 KΩ, 1/10W, 1%, 0603, SMD
D 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 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
9V-16V
V
OUT
-5V
C
OUT
2x10µF
C
IN
2x10µF
L
22
µH
52.3 k
10 k
R
T
R
B
MCP16331
2A, 60V
D
BST
1N4148
C
B
0.1 µF
FB
GND
U1
D
B
GND
OFF
ON