MIC2876 datasheet(4/26 Pages) MICROCHIP

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MIC2876

DS20005572A-page 4

 2016 Microchip Technology Inc.

TABLE 1-1:

ELECTRICAL CHARACTERISTICS

Electrical Characteristics:

VIN = 3.6V, VOUT = 5V, CIN = 4.7 µF, COUT = 22 µF, L = 1 µH, TA = 25°C, unless noted.

Bold

values are valid for –40°C ≤ TJ ≤ +125°C. (Note 1).

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Power Supply

Supply Voltage Range

VIN

2.5

—

5.5

V—

UVLO Rising Threshold

VUVLOR

—2.32

2.49

V—

UVLO Hysteresis

VUVLOH

—200

—

Quiescent Current

IVIN

—

109

—

µA

Non-switching

VIN Shutdown Current

IVINSD

—1

µA

VEN = 0V, VIN = 5.5V,

VOUT = 0V

VOUT Shutdown Current

IVOUTSD

—2

µA

VEN = 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

—92—

—

Minimum Duty Cycle

DMIN

—6.5

—

Low-Side Switch Current Limit

(Note 2)

ILS

3.8

4.8

5.8

AVIN = 2.5V

Switch On-Resistance

PMOS

—

mΩ

VIN = 3.0V, ISW = 200 mA,

VOUT = 5.0V

NMOS

—

VIN = 3.0V, ISW = 200 mA,

VOUT = 5.0V

Switch Leakage Current

ISW

—0.2

µA

VEN = 0V, VIN = 5.5V

Oscillator Frequency

FOSC

1.6

2.4

MHz

—

Overtemperature Shutdown

Threshold

TSD

—155

—

°C

—

Overtemperature Shutdown

Hysteresis

——

—

°C

—

Soft-Start

Soft-Start Time

TSS

—1.1

—

VOUT = 5.0V

EN, /PG Control Pins

EN Threshold Voltage

VEN

1.5

—

Boost converter and chip logic

——

0.4

Boost converter and chip logic

OFF

EN Pin Current

—

1.5

µA

VIN = VEN = 3.6V

Power Good Threshold (Rising)

V/PG-THR

—0.9 x

VOUT

—V

—

Note 1:

Specification for packaged product only.

Guaranteed by design and characterization.

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