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MCP1640 SYNCHRONOUS BOOST
CONVERTER EVALUATION BOARD
USER ’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The MCP1640 is a compact, high-efficiency, fixed frequency, step-up DC-DC converter.
It provides an easy-to-use power supply solution, with a minimum number of external
components for applications powered by one-cell, two-cell, or three-cell alkaline, NiCd,
NiMH, one-cell Li-Ion or Li-Polymer batteries.
The MCP1640 automatically selects the best operating mode for efficiency, Pulse
Width Modulation (PWM) or Pulse Frequency (PFM); it has a low quiescent current
(20 μA), a wide input voltage range (0.35 to 5.5V) and low start-up voltage (0.65V).
The MCP1640 is available in SOT-23-6 and 2x3mm-8 DFN packages.
This chapter provides an overview of the MCP1640 Boost Controller Evaluation Board
and covers the following topics:
? What is the MCP1640 Synchronous Boost Converter Evaluation Board?
? Contents of the MCP1640 Synchronous Boost Converter Evaluation Board
L 1
4.7 μH
V IN
0.9V To 1.7V
SW V
OUT
V OUT
3.3V @ 100 mA
+
C IN
4.7 μF
V IN
EN
V FB
536 k ?
C OUT
10 μF
309 k ?
FIGURE 1-1:
-
GND
Typical MCP1640 Boost Converter Single Cell Battery Input.
1.2
WHAT IS THE MCP1640 SYNCHRONOUS BOOST CONVERTER
EVALUATION BOARD?
The MCP1640 Synchronous Boost Converter Evaluation Board is used to evaluate and
demonstrate Microchip Technology’s MCP1640 products. This board demonstrates the
MCP1640 in two boost-converter applications with multiple output voltages. It can be
used to evaluate both package options (SOT-23-6 and 2x3-8 DFN). The MCP1640
Synchronous Boost Converter Evaluation Board was developed to help engineers
reduce the product design cycle time.
Three common output voltages can be selected: 2.0V, 3.3V and 5.0V. The output
voltage can be changed with a mini-dip switch that changes the external resistor
divider.
? 2010 Microchip Technology Inc.
DS51880A-page 9
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相关代理商/技术参数
MCP1640REF-PACK 制造商:Microchip Technology Inc 功能描述:MCP1640 BATT BOOST CONVERTER BUNDLE
MCP1640T-I/CH 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:0.65V Start-up Synchronous Boost Regulator with True Output Disconnect or Input/Output Bypass Option
MCP1640T-I/CHY 功能描述:直流/直流开关转换器 500 kHz 300 mA Syn. PWM/PFM enabled RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MCP1640T-I/MC 功能描述:直流/直流开关转换器 500 kHz 300 mA Syn. PWM/PFM enabled RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MCP1640T-ICH 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:0.65V START-UP SYNCHRONOUS BOOST REGULATOR WITH TRUE OUTPUT DISCONNECT OR INPUT/OUTPUT BYPASS OPTION
MCP1640T-IMC 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:0.65V START-UP SYNCHRONOUS BOOST REGULATOR WITH TRUE OUTPUT DISCONNECT OR INPUT/OUTPUT BYPASS OPTION
MCP1643-I/MC 制造商:Microchip Technology Inc 功能描述:
MCP1643-I/MS 制造商:Microchip Technology Inc 功能描述: 制造商:Microchip Technology Inc 功能描述:0.65V-5V INPUT LED DRIVER