MIC2941AWT datasheet(4/24 Pages) MICROCHIP

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MIC2940A/41A

DS20006000B-page 4



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1.0

ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

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

Input Supply Voltage ................................................................................................................................... –20V to +60V

Adjust Input Voltage (Note 2, Note 3)......................................................................................................... –1.5V to +26V

Shutdown Input Voltage ............................................................................................................................. –0.3V to +30V

Error Comparator Output Voltage............................................................................................................... –0.3V to +30V

Operating Ratings ‡

Input Supply Voltage (Note 4) ....................................................................................................................... +2V to +26V

† 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 of any TA (ambient temperature) is PD(max) = (TJ(max) – TA)/θJA.

Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the reg-

ulator will go into thermal shutdown.

2: Circuit of MIC2941A Adjustable Regulator in the Typical Application Circuits section (upper right) with R1 ≥

150 kΩ. VSHUTDOWN ≥ 2V and VIN ≤ 26V, VOUT = 0.

3: When used in dual supply systems where the regulator load is returned to a negative supply, the output volt-

age must be diode clamped to ground.

4: Across the full operating temperature, the minimum input voltage range for full output current is 4.3V to 26V.

Output will remain in regulation at lower output voltages and low current loads down to an input of 2V at

25°C.

ELECTRICAL CHARACTERISTICS

Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full

operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A

is programmed to output 5V and has VSHUTDOWN 0.6V.

Parameter

Symbol

Min.

Typ.

Max.

Units

Conditions

Output Voltage Accuracy

–1

—

–2

—

–2.5

—

2.5

5mA ≤ IL ≤ 1A

Output Voltage Temperature

Coefficient

ΔVO/ΔT

—

100

ppm/°C Note 1

Line Regulation

ΔVO/VO

—

0.06

0.50

IO = 10 mA,

(VOUT + 1V) ≤ VIN ≤ 26V

Load Regulation

—

0.04

0.16

IL = 5 mA to 1.25A

—

0.20

IL = 5 mA to 1A, Note 2

Dropout Voltage, Note 3

VIN – VO

—

150

IL = 5 mA

—

180

—

200

250

IL = 250 mA

—

320

—

350

450

IL = 1000 mA

—

600

—

400

600

IL = 1250 mA

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