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MCP1665

High-Voltage 3.6A Isw PFM/PWM Boost Regulator

Status: In Production

Features:

  • 36V, 100 mΩ Integrated Switch
  • Up to 92% Efficiency
  • Higher Current Compared to the Previous MCP166x Switchers Family
  • Output Voltage Range: Up to 32V
  • IOUT > 1 A at 5.0V VIN, 12V VOUT
  • IOUT > 700 mA at 3.3V VIN, 12V VOUT
  • IOUT > 400 mA at 4.2V VIN, 24V VOUT
  • Input Voltage Range: 2.9V to 5V
  • UVLO at VIN Rising: 2.9V, typical
  • UVLO at VIN Falling: 2.7V, typical
  • No Load Input Current: 250 μA Typically for PFM, 500 μA Typically for PWM
  • Shutdown Mode with 0.4 μA Typical Quiescent Current
  • Automatically PFM/PWM or Selected by the MODE Pin, for High Efficiency
  • 500 kHz PWM Operation with Skipping Mode Operation Selectable by Dedicated MODE Pin
  • Feedback Voltage Reference: VFB = 1.2V
  • Cycle-by-Cycle Current Limiting
  • Internal Compensation
  • Inrush Current Limiting and Internal Soft Start
  • Output Overvoltage Protection (OVP) and Open-Load Protection (OLP) for Constant Current Configuration
  • Thermal Shutdown
  • Easily Configurable for SEPIC, Cuk or Flyback Topologies
  • Available Package: 10-Lead 2x2 mm VQFN
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MCP1665 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DC converter that integrates a 36V, 100 mΩ NMOS switch. It provides a space-efficient high-voltage step-up power supply solution for applications powered by either three-cell alkaline, Ultimate Lithium, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries. The integrated switch is protected by the typical 3.6A cycle-by-cycle inductor peak current limit operation. There is an output overvoltage protection and an open-load protection that turn off switching if the feedback resistors are accidentally disconnected, the feedback pin is short-circuited to GND or the output is exposed to excessive voltage. Pulse-Frequency Modulation (PFM) switching mode used for power saving is implemented, and it is selectable by the dedicated MODE pin.

MCP1665 is easy to use and allows creating classic boost, SEPIC or flyback DC-DC converters within a small Printed Circuit Board (PCB) area. All compensation and protection circuitry are integrated to minimize the number of external components.

Additional Features
    • 36V, 100 mΩ Integrated Switch
    • Up to 92% Efficiency
    • Higher Current Compared to the Previous MCP166x Switchers Family
    • Output Voltage Range: Up to 32V
    • 3.6A Typical Peak Input Current Limit:
      • IOUT > 1 A at 5.0V VIN, 12V VOUT
      • IOUT > 700 mA at 3.3V VIN, 12V VOUT
      • IOUT > 400 mA at 4.2V VIN, 24V VOUT
    • Input Voltage Range: 2.9V to 5V
    • Input Undervoltage Lockout (UVLO):
      • UVLO at VIN Rising: 2.9V, typical
      • UVLO at VIN Falling: 2.7V, typical
    • No Load Input Current: 250 μA Typically for PFM, 500 μA Typically for PWM
    • Shutdown Mode with 0.4 μA Typical Quiescent Current
    • Automatically PFM/PWM or Selected by the MODE Pin, for High Efficiency
    • 500 kHz PWM Operation with Skipping Mode Operation Selectable by Dedicated MODE Pin
    • Feedback Voltage Reference: VFB = 1.2V
    • Cycle-by-Cycle Current Limiting
    • Internal Compensation
    • Inrush Current Limiting and Internal Soft Start
    • Output Overvoltage Protection (OVP) and Open-Load Protection (OLP) for Constant Current Configuration
    • Thermal Shutdown
    • Easily Configurable for SEPIC, Cuk or Flyback Topologies
    • Available Package: 10-Lead 2x2 mm VQFN
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
2.7
Input Voltage Range Max (V)
5
Output Voltage Range Max (V)
32
Quiescent Current (mA) typ
0.25
Switching Frequency (kHz)
500
Operating Temp Range
-40 to 125
Vfb (V)
1.2
Duty Cycle Max (%)
90
SHUTDOWN Current (µA) (Typ)
0.4
Light Load Efficiency Mode
Yes
Switch current (A) typ
3.6
Alternative Topology
SEPIC, Flyback

Documents

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Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MCP1665 12V Boost Converter Eval Bd
MCP1665 12V Boost Converter Eval Bd ( ADM00865 )

The MCP1665 12V output boost regulator evaluation board is intended to provide a platform allowing customers to easily evaluate the features of the MCP1665 device in a typical boost toplogy while also providing a reference for proper choice and layout of components that are critical to switching regulator implementations.

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RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP1665T-E/MRA
0.234849
10
VQFN
2x2x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
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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