MCP1640T-IMC datasheet(19/32 Pages) MICROCHIP

Part #	MCP1640T-IMC

Description	0.65V Start-up Synchronous Boost Regulator with True Output Disconnect or Input/Output Bypass Option

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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19 / 32 page

 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.

VIN

GND

VFB

SW

VOUT

5.0V @ 5 mA

COUT

10

µF

CIN

4.7

µF

L1

4.7

µH

VOUT

976 K



309 K



EN

MANGANESE LITHIUM

DIOXIDE BUTTON CELL

2.0V TO 3.2V

+

-

FROM PIC® MCU I/O

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.

VIN

PGND

VFB

SW

VIN

3.3V To 4.2V

VOUT

5.0V @ 350 mA

COUT

10

µF

CIN

10

µF

L1

10

µH

VOUTS

+

-

976 K



309 K



VOUTP

SGND

EN

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MCP1640T-IMC Datasheet(PDF) 19 Page - Microchip Technology

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