MCP1640
MCP1640 is 0.65V Start-up Synchronous Boost Regulator manufactured by Microchip Technology.
Features
- Up to 96% Typical Efficiency
- 800 m A Typical Peak Input Current Limit:
- IOUT > 100 m A @ 1.2V VIN, 3.3V VOUT
- IOUT > 350 m A @ 2.4V VIN, 3.3V VOUT
- IOUT > 350 m A @ 3.3V VIN, 5.0V VOUT
- Low Start-Up Voltage: 0.65V, typical 3.3V VOUT @ 1 m A
- Low Operating Input Voltage: 0.35V, typical 3.3VOUT @ 1 m A
- Adjustable Output Voltage Range: 2.0V to 5.5V
- Maximum Input Voltage VOUT < 5.5V
- Automatic PFM/PWM Operation (MCP1640/C):
- PFM Operation Disabled (MCP1640B/D)
- PWM Operation: 500 k Hz
- Low Device Quiescent Current: 19 µA, typical PFM Mode (not switching)
- Internal Synchronous Rectifier
- Internal pensation
- Inrush Current Limiting and Internal Soft Start
- Selectable, Logic Controlled Shutdown States:
- True Load Disconnect Option (MCP1640/B)
- Input to Output Bypass Option (MCP1640C/D)
- Shutdown Current (All States): < 1 µA
- Low Noise, Anti-Ringing Control
- Overtemperature Protection
- Available Packages:
- 6-Lead SOT-23
- 8-Lead 2 x 3 mm DFN
Applications
- One, Two and Three Cell Alkaline and Ni MH/Ni Cd Portable Products
- Single-Cell Li-Ion to 5V Converters
- Li Coin Cell Powered Devices
- Personal Medical Products
- Wireless Sensors
- Handheld Instruments
- GPS Receivers
- Bluetooth Headsets
- +3.3V to +5.0V Distributed Power Supply
General Description
The MCP1640/B/C/D is a pact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. It provides an easy-to-use power supply solution for applications powered by either single-cell, two-cell, or three-cell alkaline, Ni Cd, Ni MH, 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 acplished by integrating the low resistance N-Channel Boost switch and synchronous P-Channel switch. All pensation and protection circuitry is integrated to minimize the number of external ponents. For standby applications, the MCP1640 consumes only 19...
Representative MCP1640 image (package may vary by manufacturer)
