MCP1642B/D HIGH-CURRENT
SYNCHRONOUS BOOST CONVERTER
EVALUATION BOARD USER’S GUIDE
2015 Microchip Technology Inc.
DS50002353A-page 13
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The MCP1642B/D are compact, high-efficiency, fixed frequency, synchronous step-up
DC-DC converters. These products provide an easy-to-use power supply solution for
applications powered by either one-cell, two-cell or three-cell alkaline, NiCd, NiMH,
one-cell Li-Ion or Li-Polymer batteries.
The MCP1642B/D is capable of regulating the output voltage over a wide 1.8V to 5.5V
range and typically can deliver over 400 mA of load current at 3.3V output when
supplied from a single 1.5V cell. The regulated output voltage, V
OUT
, should be greater
than the input voltage, V
IN
.
The devices are available in MSOP-8 and 2 x 3 mm DFN-8 lead packages.
MCP1642B/D High-Current Synchronous Boost Converter Evaluation Board offers
both package types in two boost-converter applications for 3.3V and 5.0V output
voltage.
FIGURE 2-1:
MCP1642B/D Maximum I
OUT
Vs. V
IN
with Maximum 10% Output Drop.
Note:
Measurements were obtained using power supply.
0
200
400
600
800
1000
1200
1400
0.8 1.2 1.6
2
2.4 2.8 3.2 3.6
4
4.4
I
OUT
(mA)
V
IN
(V)
V
OUT
=
3.3V
V
OUT
= 5.0V
T
A
= 25
°
C
