Micrel, Inc.

MIC2208

Absolute Maximum Ratings

(1)

ESD Rating

Operating Ratings

(2)

Junction Thermal Resistance

3mmx3mm MLF-12L (

Electrical Characteristics

(4)

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

2.7

5.5

V

Under-Voltage Lockout

Threshold

(turn-on)

2.45

2.55

2.65

V

UVLO Hysteresis

100

mV

Quiescent Current

720

950

µA

Shutdown Current

0.1

5

µA

[Adjustable] Feedback

Voltage

± 1%

± 2% (over temperature)

0.99

0.98

1

1.01

1.02

V

FB pin input current

1

100

nA

Current Limit in PWM Mode

8

10

A

Output Voltage Line

Regulation

0.13

%

Output Voltage Load

Regulation

0.2

1

%

PWM Switch ON-

Resistance

95

200

300

m

Ω

Oscillator Frequency

0.9

1

1.1

MHz

Enable Threshold

0.5

0.85

1.3

V

Enable Input Current

0.1

2

µA

Soft Start Time

450

µs

Over-Temperature

Shutdown

160

°C

over-Temperature

Hysteresis

20

°C

Power Good Range

±7

±10

%

Power Good Resistance

145

200

Ω

Notes:

1. Exceeding the absolute maximum rating may damage the device.

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

3. Devices are ESD sensitive. Handling precautions recommended. Human body model: 1.5k

Ω in series with 100pF.

4. Specification for packaged product only.

September 2005

3

M9999-092905

www.micrel.com