October 2003

3

MIC49300

MIC49300

Micrel

Electrical Characteristics

T

Parameter

Conditions

Min

Typ

Max

Units

Output Voltage Accuracy

At 25°C, fixed voltage options

–1

+1

%

Over temperature range

–2

+2

%

Line Regulation

V

–0.1

0.01

+0.1

%/V

Load Regulation

I

0.2

0.5

%

Dropout Voltage (V

125

200

mV

I

280

400

mV

Dropout Voltage (V

1.5

2.1

V

Note 4

Ground Pin Current, Note 5

I

25

mA

I

25

50

mA

Ground Pin Current in Shutdown

V

0.07

5

µA

Current thru V

BIAS

I

20

35

mA

I

50

150

mA

Current Limit

V

6.5

9

A

Enable Input, Note 6

Enable Input Threshold

Regulator enable

1.6

V

(Fixed Voltage only)

Regulator shutdown

0.6

V

Enable Pin Input Current

0.1

1.0

µA

Reference

Reference Voltage

Adjustable option only

0.891

0.9

0.909

V

0.882

0.918

V

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. Human body model, 1.5k in series with 100pF.

Note 4.

For V

Note 5.

I

Note 6.

Fixed output voltage versions only.

Supply Voltage (V

Bias Supply Voltage (V

Enable Input Voltage (V

Power Dissipation .................................... Internally Limited

ESD Rating, Note 3 ...................................................... 2kV

Supply Voltage (V

Bias Supply Voltage (V

Enable Input Voltage (V

Package Thermal Resistance