Micrel, Inc.

MIC5281

June 2011

4

M9999-062411-A

Absolute Maximum Ratings

(1)

Lead Temperature (soldering, 10s).......................... +260°C

ESD Ratings

(4)

HBM ......................................................................... 2kV

MM .........................................................................200V

Operating Ratings

(2)

(3)

Junction Thermal Resistance (

θ

8-pin ePad MSOP..............................................64°C/W

8-pin MSOP .....................................................160°C/W

Electrical Characteristics

(5)

–40

°C ≤ T

Parameter

Condition

Min.

Typ.

Max.

Units

Power Supply Input

Input Voltage Range

(6)

6

120

V

Quiescent Supply Current

6

11

µA

Output Voltage

Adjustable

1.27

5.5

3.2

3.3

3.4

Fixed 3.3V

3.13

3.3

3.47

4.85

5.0

5.15

Output Voltage

Fixed 5.0V

4.75

5.0

5.25

V

−3

+3

%

Output Voltage Accuracy

−5

+5

%

Load Regulation

−0.5

0.2

+0.5

%

Line Regulation

(7)

−0.5

0.04

+0.5

%/V

Feedback Input (Adjustable)

1.232

1.270

1.308

FB Voltage

1.206

1.270

1.333

V

FB Current

3.2

nA

Current Limit

Current Limit

30

65

130

mA

Ripple Rejection

Power Supply Rejection Ratio

f = 20kHz to 2MHz

>90

dB

Notes:

1.

Exceeding an absolute maximum rating may damage the device.

2.

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

3.

dissipation results in excessive die temperature, and causes the regulator to enter thermal shutdown.

4.

Devices are ESD sensitive; use proper handling precautions.

5.

Specifications are for packaged products only.

6.

7.