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Microchip MCP1663 | Demoboard AN2085
Designing Applications with MCP166X High Output Voltage Boost Converter Family
Overview
| Topology | Flyback Converter |
| Input voltage | 3.3-4.2 V |
| Output 1 | 12 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
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