MCP1640T-IMC datasheet(4/32 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]

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4 / 32 page

MCP1640/B/C/D

DS22234A-page 4

 2010 Microchip Technology Inc.

TEMPERATURE SPECIFICATIONS

NMOS Peak Switch Current

Limit

IN(MAX)

600

850

—

mA

Note 5

VOUT Accuracy

VOUT%

-3

—

+3

%

Includes Line and Load

Regulation; VIN = 1.5V

Line Regulation

V

OUT/

VOUT) /

V

IN|

-1

0.01

1

%/V

VIN = 1.5V to 3V

IOUT = 25 mA

Load Regulation

V

OUT /

VOUT|

-1

0.01

1

%IOUT = 25 mA to 100 mA;

VIN = 1.5V

Maximum Duty Cycle

DCMAX

88

90

—

%

Switching Frequency

fSW

425

500

575

kHz

EN Input Logic High

VIH

90

——

%of VIN IOUT = 1 mA

EN Input Logic Low

VIL

——

20

%of VIN IOUT = 1 mA

EN Input Leakage Current

IENLK

—

0.005

—

µA

VEN = 5V

Soft-start Time

tSS

—

750

—

µS

EN Low to High, 90% of

VOUT; Note 4

Thermal Shutdown Die

Temperature

TSD

—

150

—

C

Die Temperature Hysteresis

TSDHYS

—

10

—

C

Electrical Specifications:

Parameters

Sym

Min

Typ

Max

Units

Conditions

Temperature Ranges

Operating Junction Temperature

Range

TJ

-40

—

+125

°C

Steady State

Storage Temperature Range

TA

-65

—

+150

°C

Maximum Junction Temperature

TJ

—

+150

°C

Transient

Package Thermal Resistances

Thermal Resistance, 5L-TSOT23



JA

—

192

—

°C/W

EIA/JESD51-3 Standard

Thermal Resistance, 8L-2x3 DFN



JA

—93

—

°C/W

DC CHARACTERISTICS (CONTINUED)

Electrical Characteristics: Unless otherwise indicated, VIN = 1.2V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT =3.3V, IOUT =15 mA,

TA = +25°C.

Boldface specifications apply over the TA range of -40

oC to +85oC.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

3.3 K

 resistive load, 3.3V

OUT (1 mA).

2:

For VIN > VOUT, VOUT will not remain in regulation.

3:

IQ is measured from VOUT; VIN quiescent current will vary with boost ratio. VIN quiescent current can be

estimated by: (IQPFM * (VOUT/VIN)), (IQPWM * (VOUT/VIN)).

4:

220

 resistive load, 3.3V

OUT (15 mA).

5:

Peak current limit determined by characterization, not production tested.

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