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Microchip MCP1663 | Demoboard AN2085

Designing Applications with MCP166X High Output Voltage Boost Converter Family

Overview

TopologySEPIC Buck-Boost Topology
Input voltage9-16 V
Output 1-3.3 V
Output 23.3 V

Description

This document aims to assist engineers in designingdifferent power applications and to provide an insight onhow a simple, Non-Synchronous Boost Converter can beused to develop solutions for non-typical requirements.The following paragraphs will provide examples of converterapplications that fulfill a wide variety of the industryrequirements.The solutions provided by Microchip Technology Inc.highlight the use of the MCP1661/3 boost (step-up) regulators,which provide the necessary flexibility required indealing with the increasing range of the technological fielddemands.

Features

  • Wide Output Voltage Range: Up to 32V
  • Typical Input Peak Current Limit:
  • 1.3A (MCP1661)
  • 1.8A (MCP1663)
  • Input Voltage Range: 2.4V-5.5V
  • Undervoltage Lockout (UVLO):
  • UVLO @ VIN Rising: 2.3V, typical
  • UVLO @ VIN Falling: 1.85V, typical
  • Pulse-Width Modulator (PWM) Operation withSkip Mode: 500 kHz
  • Output Overvoltage Protection (OVP) forMCP1661/3 in the event of:
  • Feedback pin shorted to GND
  • Disconnected feedback divider
  • Internal Compensation
  • Peak Current Mode Control
  • Available Packages (pin to pin compatible):5-Lead SOT-23 and 2x3 mm, 8-Lead TDFN

Typical applications

  • Portable Medical Equipment
  • Two and Three-Cell Alkaline, Lithium Ultimate and NiMH/NiCd Portable Products
  • LCD Bias Supply for Portable Applications
  • Camera Phone Flash
  • Handheld Instruments

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL1
(µH)
L2
(µH)
IR
(A)
IR 2
(A)
ISAT
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
Type Samples
744877100SPEC
8 files WE-DD SMT Shielded Coupled Inductor 10 10 1.1 1.1 2.8 0.11 0.11 0.12 0.12 27 Straight
Order Code Data­sheet Simu­lation
744877100SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL1
(µH)
L2
(µH)
IR
(A)
IR 2
(A)
ISAT
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
Type Samples