Microchip MCP1663 | Demoboard AN2085

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

More information

• Datasheet
• IC product information