MCP1640-IMC datasheet(4/32 Pages) MICROCHIP

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MCP1640/B/C/D

DS20002234D-page 4

 2010-2015 Microchip Technology Inc.

NMOS Switch On Resistance

RDS(ON)N

—0.6

—



VIN = 3.3V, ISW = 100 mA

PMOS Switch On Resistance

RDS(ON)P

—0.9

—



VIN = 3.3V, ISW = 100 mA

NMOS Peak Switch Current

Limit

IN(MAX)

600

850

—

Note 4

VOUT Accuracy

VOUT%

-3

—

Includes Line and Load

Regulation; VIN = 1.5V

Line Regulation

V

OUT/VOUT)

V

IN|

-1

0.01

%/V

VIN = 1.5V to 3V

IOUT = 25 mA

Load Regulation

V

OUT/VOUT|

-1

0.01

%IOUT = 25 mA to 100 mA;

VIN = 1.5V

Maximum Duty Cycle

DCMAX

—

Switching Frequency

fSW

425

500

575

kHz

EN Input Logic High

VIH

——

%of VIN IOUT = 1 mA

EN Input Logic Low

VIL

——

%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 5

Thermal Shutdown Die

Temperature

TSD

—

150

—

C

Die Temperature Hysteresis

TSDHYS

—10

—

C

TEMPERATURE SPECIFICATIONS

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

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Temperature Ranges

Operating Junction Temperature

Range

-40

—

+125

°C

Steady State

Storage Temperature Range

-65

—

+150

°C

Maximum Junction Temperature

—

+150

°C

Transient

Package Thermal Resistances

Thermal Resistance, 6LD-SOT-23



—190.5

—

°C/W

Thermal Resistance, 8LD-2x3 DFN



—75

—

°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°C to +85°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Note 1:

3.3 k

 resistive load, 3.3V

OUT (1 mA).

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

IQOUT is measured at VOUT; VOUT is externally supplied with a voltage higher than the nominal 3.3V output

(device is not switching); no load; VIN quiescent current will vary with boost ratio. VIN quiescent current

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

Peak current limit determined by characterization, not production tested.

220

 resistive load, 3.3V

OUT (15 mA).

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