 2010 Microchip Technology Inc.

DS22234A-page 19

MCP1640/B/C/D

6.0

TYPICAL APPLICATION CIRCUITS

FIGURE 6-1:

Manganese Lithium Coin Cell Application using Bypass Mode.

FIGURE 6-2:

USB On-The-Go Powered by Li-Ion.

GND

SW

5.0V @ 5 mA

10

4.7

4.7

976 K



309 K



EN

MANGANESE LITHIUM

DIOXIDE BUTTON CELL

2.0V TO 3.2V

+

-

Note:

For applications that can operate directly from the battery input voltage during Sleep mode and

require a higher voltage during normal run mode, the MCP1640C device provides input to output

bypass when disabled. The PIC Microcontroller is powered by the output of the MCP1640C. One

of its I/O pins is used to enable and disable the MCP1640C to control its bias voltage. While

operating in Sleep mode, the MCP1640C input quiescent current is typically less than 1 uA.

SW

3.3V To 4.2V

5.0V @ 350 mA

10

10

10

+

-

976 K



309 K



EN