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MCP16251

Low Quiescent Current Synchronous Boost Converter

Status: In Production

Features:

  • Up to 96% Typical Efficiency
  • IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
  • IOUT > 250 mA @ 2.4V VIN, 3.3V VOUT
  • IOUT > 225 mA @ 3.3V VIN, 5.0V VOUT
  • Low Start-up Voltage: 0.82V
  • Operating Input Voltage: down to 0.35V
  • Adjustable Output Voltage Range: 1.8V to 5.5V
  • Maximum Input Voltage < VOUT < 5.5V
  • Automatic PFM/PWM Operation
  • PWM Operation at 500 kHz
  • Low Device Quiescent Current: <4 µA typical
  • Shutdown Current: 0.6 µA typical
  • Internal Synchronous Rectifier
  • Internal Compensation
  • Inrush Current Limiting and Internal Soft-Start
  • True Load Disconnect Shutdown
  • Input to Output Bypass Shutdown Option (MCP16252)
  • Anti-Ringing Control
  • Over-temperature Protection
  • SOT23-6 or 2x3 8-Lead TDFN packages
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MCP16251/2 is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. This family of devices provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell or three-cell alkaline, NiCd, NiMH and one-cell Li-Ion or Li-Polymer batteries.

Additional Features
    • Up to 96% Typical Efficiency
    • 650 mA Typical Peak Input Current Limit:
      • IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
      • IOUT > 250 mA @ 2.4V VIN, 3.3V VOUT
      • IOUT > 225 mA @ 3.3V VIN, 5.0V VOUT
    • Low Start-up Voltage: 0.82V
    • Operating Input Voltage: down to 0.35V
    • Adjustable Output Voltage Range: 1.8V to 5.5V
    • Maximum Input Voltage < VOUT < 5.5V
    • Automatic PFM/PWM Operation
    • PWM Operation at 500 kHz
    • Low Device Quiescent Current: <4 µA typical
    • Shutdown Current: 0.6 µA typical
    • Internal Synchronous Rectifier
    • Internal Compensation
    • Inrush Current Limiting and Internal Soft-Start
    • True Load Disconnect Shutdown
    • Input to Output Bypass Shutdown Option (MCP16252)
    • Anti-Ringing Control
    • Over-temperature Protection
    • SOT23-6 or 2x3 8-Lead TDFN packages
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
0.82
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
1.8
Output Voltage Range Max (V)
5.5
Output Current (mA) max
250
Quiescent Current (mA) typ
0.004
Switching Frequency (kHz)
500
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 85
Vfb (V)
1.23
Duty Cycle Max (%)
91
SHUTDOWN Current (µA) (Typ)
0.6
Light Load Efficiency Mode
Yes
Switch current (A) typ
0.65

Documents

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Data Sheets

Software Library

Development Environment

  • Demo & Evaluation Boards
  • Software Libraries
Demo & Evaluation Boards
MCP16251 & MCP1640B Sync Boost Converters Eval Board
MCP16251 & MCP1640B Sync Boost Converters Eval Board ( ADM00458 )

The MCP16251 and MCP1640B Synchronous Boost Converters Evaluation Board is used to evaluate and demonstrate Microchip Technology’s MCP16251 and MCP1640B products. This board demonstrates the MCP16251/MCP1640B in two boost-converter applications with multiple output voltages. It can be used to evaluate both package options (SOT-23-6 and 2x3 mm 8-(T)DFN). The MCP16251 and MCP1640B...

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MCP16251 Single Cell Boost With Ext UVLO
MCP16251 Single Cell Boost With Ext UVLO ( ARD00797 )

The MCP16251 Single Cell Boost Converter With External UVLO Reference Design provides an example of how to optimize applications powered from a single AA cell battery by incorporating a ultra low power external under-voltage lockout circuit with hysteresis.

The converter will not (re)start if the battery voltage is lower than 1.14V and will stop working if the battery voltage drops...

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Software Libraries
Analog Simulation - MCP16251

The MCP16251/2 is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. This family of devices provides an easy-to-use power supply solution for applications powered by...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP16251T-I/MNY
0.014300
0.248485
8
TDFN
2x3x0.8mm
NiPdAu
e4
MCP16251T-I/CH
0.017000
0.046667
6
SOT-23
-
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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