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MCP1661

High Voltage 1.3A Isw PWM Boost Regulator

Status: In Production

Features:

  • Up to 92% Efficiency
  • High Output Voltage Range: up to 32V
  • IOUT> 200 mA @ 5.0V VIN, 12V VOUT
  • IOUT> 125 mA @ 3.3V VIN, 12V VOUT
  • IOUT> 100 mA @ 4.2V VIN, 24V VOUT
  • Input Voltage Range: 2.4V to 5.5V
  • UVLO@VIN Rising:  2.3V, typical
  • UVLO@VIN Falling: 1.85, typical
  • No Load Input Current: 250 µA, typical
  • Sleep mode with 200 nA Typical Quiescent Current
  • PWM Operation with Skip mode: 500 kHz
  • Feedback Voltage Reference: VFB= 1.227V
  • Cycle-by-Cycle Current Limiting
  • Internal Compensation
  • Inrush Current Limiting and Internal Soft-Start
  • Feedback pin shorted to GND
  • Disconnected feedback divider
  • Overtemperature Protection
  • Easily Configurable for SEPIC or Flyback Topologies
  • Available Packages: 5-Lead SOT-23 or 2x3 8-Lead TDFN
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MCP1661 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DCconverter which integrates a 36V, 800 mΩ NMOS switch. It provides a space-efficient high-voltage step-up power supply solution for applications powered by either two-cell or three-cell alkaline, Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries.

Additional Features
    • Up to 92% Efficiency
    • High Output Voltage Range: up to 32V
    • 1.3A Peak Input Current Limit:
      • IOUT> 200 mA @ 5.0V VIN, 12V VOUT
      • IOUT> 125 mA @ 3.3V VIN, 12V VOUT
      • IOUT> 100 mA @ 4.2V VIN, 24V VOUT
    • Input Voltage Range: 2.4V to 5.5V
    • Undervoltage Lockout (UVLO):
      • UVLO@VIN Rising:  2.3V, typical
      • UVLO@VIN Falling: 1.85, typical
    • No Load Input Current: 250 µA, typical
    • Sleep mode with 200 nA Typical Quiescent Current
    • PWM Operation with Skip mode: 500 kHz
    • Feedback Voltage Reference: VFB= 1.227V
    • Cycle-by-Cycle Current Limiting
    • Internal Compensation
    • Inrush Current Limiting and Internal Soft-Start
    • Output Overvoltage Protection (OVP) in the event of:
      • Feedback pin shorted to GND
      • Disconnected feedback divider
    • Overtemperature Protection
    • Easily Configurable for SEPIC or Flyback Topologies
    • Available Packages: 5-Lead SOT-23 or 2x3 8-Lead TDFN
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
2.4
Input Voltage Range Max (V)
5.5
Output Voltage Range Max (V)
32
Output Current (mA) max
200
Quiescent Current (mA) typ
0.25
Switching Frequency (kHz)
500
Operating Temp Range
-40 to 125
Vfb (V)
1.227
Duty Cycle Max (%)
90
SHUTDOWN Current (µA) (Typ)
0.2
Switch current (A) typ
1.3
Alternative Topology
SEPIC, Flyback

Documents

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Data Sheets

  
1202KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MCP1661 Evaluation Board
MCP1661 Evaluation Board ( ADM00566 )

The MCP1661 High-Voltage Boost and SEPIC Converters Evaluation Board is used to evaluate Microchip Technology’s MCP1661 product. This board demonstrates the MCP1661 capabilities in two different topologies:
• 12V output Boost Converter application supplied from an external voltage source (VIN < 5.5V e.g. two cell boost to 12V)
• 3.3V output SEPIC Converter...

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MCP1661 Flyback Converter Reference Design
MCP1661 Flyback Converter Reference Design ( ARD00598 )

The MCP1661 Flyback Converter Reference Design provides an example of a galvanically isolated power supply.The board is used to evaluate and demonstrate Microchip Technology's MCP1661 in the following topology:

- 5V output Isolated Flyback Converter application supplied from 5V typical input voltage.

It is used to evaluate the 5-Lead SOT-23 package.
By changing...

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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
MCP1661T-E/MNY
0.014300
0.248485
8
TDFN
2x3x0.8mm
NiPdAu
e4
MCP1661T-E/OT
0.016000
0.049000
5
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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