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MCP1623

Microchip Technology
Part Number MCP1623
Manufacturer Microchip Technology
Description Low-Voltage Input Boost Regulator
Published Jun 29, 2010
Detailed Description MCP1623/24 Low-Voltage Input Boost Regulator for PIC® Microcontrollers Features • Up to 96% Typical Efficiency • 425 m...
Datasheet PDF File MCP1623 PDF File

MCP1623
MCP1623

Overview
MCP1623/24 Low-Voltage Input Boost Regulator for PIC® Microcontrollers Features • Up to 96% Typical Efficiency • 425 mA Typical Peak Input Current Limit: - IOUT > 50 mA @ 1.
2V VIN, 3.
3V VOUT - IOUT > 175 mA @ 2.
4V VIN, 3.
3V VOUT - IOUT > 175 mA @ 3.
3V VIN, 5.
0V VOUT • Low Start-Up Voltage: 0.
65V, 3.
3V VOUT @ 1 mA (typical) • Low Operating Input Voltage: 0.
35V, typical 3.
3VOUT @ 1 mA • Adjustable Output Voltage Range: 2.
0V to 5.
5V • Maximum Input Voltage  VOUT < 5.
5V • Automatic PFM/PWM Operation (MCP1624) • PWM-Only Operation (MCP1623) • PWM Operation: 500 kHz • Low Device Quiescent Current: 19 µA, typical PFM Mode • Internal Synchronous Rectifier • Internal Compensation • Inrush Current Limiting and Internal Soft Start • True Load Disconnect • Shutdown Current (All States): <1 µA • Low Noise, Anti-Ringing Control • Overtemperature Protection • Available Packages: - 6-Lead SOT-23 - 8-Lead 2 x 3 DFN Applications • One, Two and Three-Cell Alkaline and NiMH/NiCd Low-Power PIC® Microcontroller Applications General Description The MCP1623/24 is a compact, high-efficiency, fixed-frequency, synchronous step-up DC-DC converter.
It provides an easy-to-use power supply solution for PIC® microcontroller applications powered by either single-cell, two-cell, or three-cell alkaline, NiCd, NiMH, and single-cell Li-Ion or Li-Polymer batteries.
Low-voltage technology allows the regulator to start up without high inrush current or output voltage overshoot from a low 0.
65V input.
High efficiency is accomplished by integrating the low-resistance N-Channel Boost switch and synchronous P-Channel switch.
All compensation and protection circuitry are integrated to minimize external components.
For standby applications, the MCP1624 operates and consumes only 19 µA while operating at no load.
A “true” Load Disconnect mode provides input to output isolation while disabled (EN = GND) by removing the normal boost regulator diode path from input to output.
This mode consumes less than 1 µA o...


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