MIC79050 datasheet(3/28 Pages) MICROCHIP

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DS20005771B-page 3

MIC79050

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

Supply Input Voltage (VIN) .......................................................................................................................... –20V to +20V

Power Dissipation (PD) (Note 1) ............................................................................................................Internally Limited

Operating Ratings ‡

Supply Input Voltage (VIN) ......................................................................................................................... +2.5V to +16V

Enable Input Voltage (VEN) .................................................................................................................................0V to VIN

† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

This is a stress rating only and functional operation of the device at those or any other conditions above those indicated

in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended

periods may affect device reliability.

‡ Notice: The device is not guaranteed to function outside its operating ratings.

Note 1: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(max) =

(TJ(max) – TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die tem-

perature, and the regulator will go into thermal shutdown.

ELECTRICAL CHARACTERISTICS

Electrical Characteristics: VIN = VBAT + 1.0V; COUT = 4.7 μF, IOUT = 100 μA; TJ = +25°C, bold values indicate

–40°C ≤ TJ ≤ +125°C; unless noted.

Parameter

Symbol

Min.

Typ.

Max.

Units

Conditions

Battery Voltage Accuracy

VBAT

–0.75

—

0.75

Variation from nominal VOUT, –5°C

to +60°C

Battery Voltage Temperature

Coefficient

ΔVBAT/

ΔT

—

ppm/°C Note 1

Line Regulation

ΔVBAT/

VBAT

—

0.009

0.05

%/V

VIN = VBAT + 1V to 16V

—

0.1

Load Regulation

ΔVBAT/

VBAT

—

0.05

0.5

IOUT = 100 μA to 500 mA, Note 2

—

0.7

Dropout Voltage (Note 3)

VIN –

VBAT

—

380

500

IOUT = 500 mA

—

600

Ground Pin Current (Note 4,

Note 5)

IGND

—

130

µA

VEN ≥ 3.0V, IOUT = 100 μA

—

170

—

VEN ≥ 3.0V, IOUT = 500 mA

—

Ground Pin Quiescent

Current (Note 5)

IGND

—

0.05

µA

VEN ≤ 0.4V (shutdown)

—

0.10

VEN ≤ 0.18V (shutdown)

Ripple Rejection

PSRR

—

f = 120 Hz

Current Limit

ILIMIT

—

750

900

VBAT = 0V

—

1000

Thermal Regulation

ΔVBAT/

ΔPD

—

0.05

—

%/W

Note 6

ENABLE Input

Enable Input Logic-Low

Voltage

VENL

—

0.4

—

VEN = logic-low (shutdown)

—

0.18

2.0

—

VEN = logic-high (enabled)

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