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MCP1640 step-up DC DC converter circuits

The MCP1640 is a high-efficiency, fixed frequency, synchronous step-up DC DC converter designed to provides an easy-to-use power supply solution for applications powered by batteries ( NiCd, NiMH, one-cell Li-Ion or Li-Polymer ) .
The MCP1640 is designed with low-voltage technology that allows the regulator to start up without high inrush current or output voltage overshoot from a low 0.65V input.  In stand by applications, the MCP1640 operates and consumes only 19 μA  .
MCP1640 has a high efficiency up to 96% offering features like overheating protection , low noise and many other .
The MCP1640 can provide the following output current :
- IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
- IOUT > 350 mA @ 2.4V VIN, 3.3V VOUT
- IOUT > 350 mA @ 3.3V VIN, 5.0V VOUT

The output voltage provided by the circuit can be adjusted  between 2 and 5.5 volts requiring a maximum input voltage  £ VOUT < 5.5V .
As you can see in these two applications circuit diagrams the ic can be easy configured for alkaline or lithium ion batteries using few external components and almost the same components value and configuration .
This DC converter can be used for powering portable devices like : personal medical products , wireless sensors ,handheld instruments , GPS receivers , bluetooth headsets , etc.

MCP1640 step-up 3.3v DC-DC converter circuit diagram MCP1640 step-up 5v DC-DC converter circuit diagram

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