 2019 Microchip Technology Inc.

DS20006137A-page 3

MIC3490

1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

Input Supply Voltage (VIN) ........................................................................................................................... -20V to +38V

Enable Input Voltage (VEN) ......................................................................................................................... -0.3V to +38V

Power Dissipation (PDIS)........................................................................................................................ Internally Limited

ESD Rating (Note 1).................................................................................................................................. ESD Sensitive

Operating Ratings ‡

Input Supply Voltage (VIN) ......................................................................................................................... +2.3V to +36V

Enable Input Voltage (VEN) ............................................................................................................................. 0V to +36V

† 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. Specifications are for packaged product only.

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

Note 1: Devices are ESD sensitive. Handling precautions are recommended.

TABLE 1-1:

ELECTRICAL CHARACTERISTICS

Electrical Characteristics: TJ = +25°C with VIN = VOUT + 1V; IOUT = 100 µA;

Bold values indicate -40°C ≤ TJ ≤ +125°C; unless otherwise specified. Specifications for packaged product only.

Parameter

Symbol

Min.

Typ.

Max.

Units

Conditions

Output Voltage Accuracy

VOUT

-1.0

—

1.0

%

Variation from nominal VOUT

-2.0

—

2.0

Line Regulation

ΔVOUT/ΔVIN

—

0.04

0.5

%

VIN = VOUT + 1V to 36V

Load Regulation

ΔVOUT/VOUT

—0.25

1

%

IOUT = 100 µA to 100 mA

Dropout Voltage

VDO

—50—

mV

IOUT = 100 µA

—230

300

IOUT = 50 mA

——

400

—270

400

IOUT = 100 mA

——

450

Ground Current

IGND

—18

30

µA

IOUT = 100 µA

——

35

—

0.25

0.70

mA

IOUT = 50 mA

—1

2

IOUT = 100 mA

Ground Current in Shutdown

ISHDN

—0.1

1

µA

VEN ≤ 0.6V; VIN = 36V

Short-Circuit Current

ISC

—190

350

mA

VOUT = 0V

Output Leakage, Reverse

Polarity Input (Note 2)

VOUT

—

-0.1

—

V

Load = 500Ω; VIN = -15V

Enable Input

Input Low Voltage

VEN

——

0.6

V

Regulator off

Input High Voltage

2.0

—

—

Regulator on

Enable Input Current

IEN

-1.0

0.01

1.0

µA

VEN = 0.6V; Regulator off

—0.1

1.0

VEN = 2.0V; Regulator on

—0.5

2.5

VEN = 36V; Regulator on

Start-up Time

tSTART

—1.7

7

ms

VIN applied before EN signal