MIC2875 datasheet(4/24 Pages) MICROCHIP

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MIC2875

DS20005549A-page 4

 2015 Microchip Technology Inc.

TABLE 1-1:

ELECTRICAL CHARACTERISTICS (Note 1)

Electrical Characteristics:

VIN = 3.6V, VOUT = 5V, CIN = 4.7 μF, COUT = 22 μF, L = 1 μH TA = 25°C, bold values are

valid for –40°C

 TJ  +125°C Unless otherwise indicated.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Power Supply

Supply Voltage Range

VIN

2.5

—

5.5

—

UVLO Rising Threshold

VUVLOR

—

2.32

2.49

—

UVLO Hysteresis

VUVLOH

—

200

—

Quiescent Current

IVIN

—

Operating at minimum

switching frequency

VIN Shutdown Current

IVINSD

—

μAVEN = 0V, VIN = 5.5V, VOUT =

VOUT Shutdown Current

IVOUTSD

—

μAVEN = 0V, VIN = 0.3V, VOUT =

5.5V

Output Voltage

VOUT

VIN

—

5.5

—

Feedback Voltage

VFB

0.8865

0.9

0.9135

Adjustable version, IOUT = 0A

Voltage Accuracy

—

1.5

—

+1.5

Fixed version, IOUT = 0A

Line Regulation

——

0.3

—

%/V

2.5V < VIN < 4.5V, IOUT =

500 mA

Load Regulation

——

0.2

—

%/A

IOUT = 200 mA to 1200 mA

Maximum Duty Cycle

DMAX

—

%—

Minimum Duty Cycle

DMIN

—

6.5

—

%—

Low-side Switch Current

Limit

ILS

3.8

4.8

5.8

VIN = 2.5V

Switch On-Resistance

PMOS

—

mΩ

VIN = 3.0V, ISW = 200 mA,

VOUT = 5.0V

NMOS

—

mΩ

VIN = 3.0V, ISW = 200 mA,

VOUT = 5.0V

Switch Leakage Current

(Note 2)

ISW

—

0.2

μAVEN = 0V, VIN = 5.5V

Minimum Switching

Frequency

FSWMIN

—

kHz

IOUT = 0 mA

Oscillator Frequency

FOSC

1.6

2.4

MHz

—

Overtemperature

Shutdown Threshold

TSD

—

155

—

°C

—

Overtemperature

Shutdown Hysteresis

—

Soft-Start

Soft-Start Time

TSS

—

1.1

—

VOUT = 5.0V

Note 1:

Specification for packaged product only.

Guaranteed by design and characterization.

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