June 2000

3

MIC5231

MIC5231

Micrel

Electrical Characteristics

V

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V

OUT

Output Voltage Accuracy

variation from nominal V

OUT

–2+2

%

–3

+3

%

∆V

Output Voltage

Note 5

250

ppm/

°C

Temperature Coefficient

∆V

Line Regulation

V

0.2

0.25

%

∆V

Load Regulation

I

0.2

1

%

V

DO

Dropout Voltage, Note 7

I

15

mV

I

150

300

mV

I

Q

Ground Pin Current

V

0.65

3

µA

V

1.1

4

µA

PSRR

Ripple Rejection

f = 100Hz, I

dB

Enable Input

V

ENL

Enable Input Voltage

V

0.4

0.18

V

V

1.4

V

I

ENL

Enable Input Current

V

1

nA

I

ENH

Enable Input Current

V

1

nA

Note 1.

Exceeding the absolute maximum rating may damage the device.

Note 2.

The device is not guaranteed to function outside its operating rating.

Note 3.

Devices are ESD sensitive. Handling precautions recommended.

Note 4:

The maximum allowable power dissipation at any T

130

°C/W. Mounted to a standard PC board, the θ

Note 5:

Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

Note 6:

Regulation is measured at constant junction temperature using low duty cycle pulse testing.

Note 7:

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. For outputs below 3.5V, dropout voltage is the input-to-output differential with the minimum input voltage 3.5V. Minimum input

operating voltage is 3.5V.