IC manufacturers Microchip

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Microchip MCP1642B | Demoboard ADM00556

MCP1642B Two-Cells to USB Power Evaluation Board

Overview

TopologyBoost Converter
Input voltage1.8-3.6 V
Output 15 V / 0.7 A
IC revisionA

Description

The MCP1642B Two-Cells to USB Power Evaluation Board is used to evaluate and demonstrate Microchip Technology’s MCP1642B Switching Boost Regulator. This board demonstrates the MCP1642B capabilities in a boost-converter application supplied from two AA batteries or from an external voltage source. A USB cable can be connected to the output of MCP1642B Two-Cells to USB Power Evaluation Board and used to provide power to portable electronic devices when necessary. It can be used to evaluate the MSOP-8 package. The MCP1642B Two-Cells to USB Power Evaluation Board was developed to help engineers reduce the product design cycle time. On the MCP1642B Two-Cells to USB Power Evaluation Board, the output voltage has the value of 5.0V (the fixed value MCP1642B-50 device is used), resulting in a simple and compact application. The footprints for RT and RB (resistor divider connected to the FB pin) are not populated and will only be used if MCP1642B-ADJ, the adjustable option, will be tested. An enable (EN Switch selection) is used to enable and disable the converter. When enabled, the MCP1642B will regulate the output voltage; when disabled, the MCP1642B will disconnect the path from input to output for “true-disconnect”

Features

  • It can be powered by two AA batteries or external power supply
  • Input voltage range (V IN ): 1.8V to 5.5V, with V IN  V OUT
  • Minimum start-up voltage: 1.8V at V OUT = 5.0V and I OUT = 1 mA, resistive load
  • Output voltage: 5.0V
  • Output current: typical 700 mA @ 5V output, 2.8V input
  • PWM operation
  • PWM switching frequency: 1 MHz
  • Power Good indicator 2 mA LED
  • Enable state selectable using EN switch
  • Peak input current limit of 1.8A
  • Overtemperature protection (if the die temperature exceeds +150°C, with 35°C hysteresis)
  • USB A output connector

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
50% typ.(°)
Interface Type
Type
Gender
Pins
Mount
IR(mA)
Working Voltage(V (AC))
Packaging
Poles
L(mm)
Vaporphase process
Samples
WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
MountSMT 
PackagingTape and Reel 
Length1.6 mm
WS-DISV Small Compact SMT with Raised Actuator 2.54 mm, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Rated Current25 mA
PackagingTape and Reel 
Poles
Length3.48 mm
Vaporphase processnot specified 
WR-USB Standard Connectors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Interface TypeType A 
TypeHorizontal 
GenderReceptacle 
Pins
MountSMT 
Rated Current1500 mA
Working Voltage30 V (AC)
PackagingTray