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MCP1601

750kHz 500mA Synchronous PFM/PWM Buck Regulator w/Frequency Synchronization

Status: In Production

Features:

  • 3 operating modes (PWM, PFM, LDO) with automatic switching between modes
  • Shutdown mode to minimize current drain during stand-bye conditions
  • Oscillator Synchronization to 1.0MHz PWM mode
  • Integrated Buck and Synchronous switches
  • Complete ceramic capacitor solution
  • Integrated UVLO, Soft-start, and Over temperature protection
  • Short circuit protection
  • -40°C to +85°C operation
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MCP1601 is a synchronous Buck (step-down) switching regulator that can continuously supply 500mA of load current. This DC/DC converter can provide output voltages of 0.9V to Vin with an operating efficiency that can exceed 92%. Although ideally suited for a single Li-Ion, or 2 to 3 cell NiCd, NiMH, or alkaline battery operation, the input range of 2.7V to 5.5V is also useful for converting bus voltages to standard system requirements.

Additional Features
    • 3 operating modes (PWM, PFM, LDO) with automatic switching between modes
    • Shutdown mode to minimize current drain during stand-bye conditions
    • Oscillator Synchronization to 1.0MHz PWM mode
    • Integrated Buck and Synchronous switches
    • Complete ceramic capacitor solution
    • Integrated UVLO, Soft-start, and Over temperature protection
    • Short circuit protection
    • -40°C to +85°C operation
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.7
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.9
Output Current (mA) max
500
Quiescent Current (mA) typ
0.119
Switching Frequency (kHz)
750
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 85
Vfb (V)
0.8
Duty Cycle Max (%)
100
SHUTDOWN Current (µA) (Typ)
0.05
Light Load Efficiency Mode
Yes

Documents

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Data Sheets

MCP1601 Datasheet
  
489KB
MCP1601, 500 mA Synchronous Buck Regulator
  
88KB

Application Notes

Download All
AN1025 - Converting a 5.0V Supply Rail to a Regulated 3.0V, AN1025
  
527KB
AN793 - Power Management in Portable Applications: Understanding the Buck Switchmode Power Converter
  
401KB

Brochures

Analog and Interface Product Selector Guide
  
5052KB
Quick Guide to Microchip Development Tools
  
6020KB
Analog Solutions for Automotive Applications Design Guide
  
284KB
Analog & Interface Guide (Volume 2)
  
1067KB

Design Checklist

Portable Power Conversion Design Guide
  
6555KB

User Guides

MCP1601 Evaluation Board (Rev.1) User's Guide
  
225KB
MCP1601 User's Guide
  
647KB
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board User's Guide
  
1367KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board ( SOIC8EV )

This is a blank PCB that allows the operation of Microchip Technology’s 8-pin devices to be easily evaluated. Each device pin is connected to a pull-up resistor, a pull-down resistor, an in-line resistor, and a loading capacitor. The PCB pads allow through hole or surface mount connectors to be installed to ease connection to the board. Additional passive component footprints are on the...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP1601-I/MS
0.025600
0.070000
8
MSOP
3x3mm
Matte Tin
e3
MCP1601T-I/MS
0.025600
0.215600
8
MSOP
3x3mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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