IC reference design search
IC manufacturers Microchip

IC manufacturers (103)

reference designMCP1665 | Demoboard ADM00865

Microchip MCP1665 | Demoboard ADM00865

High-voltage 3.6 A Integrated Switch PFW/PWM Boost Regulator

Overview

TopologyBoost Converter
Input voltage3.3-4.2 V
Switching frequency425-575 kHz
Output 124 V / 0.35 A
IC revision1

Description

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.

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

Typical applications

  • Single-cell Li-on to 5V, 12V or 24V converters / LCD bias supply for portable applications / Battery-powered LEDs
  • Three-cell Alkaline, lithium and NiMH/NiCd protable products
  • Camera phone flash / Flashlight / Lighting applications

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT(A)
RDC max.(mΩ)
fres(MHz)
Size
Version
ISAT,10%(A)
ISAT,30%(A)
Mount
Samples
7447714100
WE-PD SMT Power Inductor, 10 µH, –
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance10 µH
–
Saturation Current5 A
DC Resistance27 mΩ
Self Resonant Frequency20.5 MHz
Size1050 
VersionPerformance 
–
–
MountSMT 
74437368100
WE-LHMI SMT Power Inductor, 10 µH, 7 A
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance10 µH
Performance Rated Current7 A
Saturation Current12.5 A
DC Resistance30 mΩ
Self Resonant Frequency12 MHz
Size1040 
VersionSMT 
Saturation Current @ 10%7.9 A
Saturation Current @ 30%16.8 A
MountSMT