MIC5237 datasheet(4/18 Pages) MICROCHIP

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MIC5237

DS20006095B-page 4



2018 - 2022 Microchip Technology Inc. and its subsidiaries

Current Limit

ILIMIT

—

700

900

VOUT = 0V

—

1000

Thermal Regulation

∆VOUT/

∆PD

—

0.05

—

%/W

Note 5

Output Noise

eno

—

500

—

nV/√Hz VOUT = 5.0V, IOUT = 50 mA,

COUT = 2.2 µF

Note 1: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total

temperature range.

2: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are

tested for load regulation in the load range from 100 µA to 500 mA. Changes in output voltage due to heat-

ing effects are covered by the thermal regulation specification.

3: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its

nominal value measured at 1V differential.

4: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current

drawn from the supply is the sum of the load current plus the ground pin current.

5: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipa-

tion is applied, excluding load or line regulation effects. Specifications are for a 500 mA load pulse at VIN =

16V for t = 10 ms.

ELECTRICAL CHARACTERISTICS (CONTINUED)

Electrical Characteristics: VIN = VOUT + 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

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