Micrel, Inc.

MIC4724

June 2008

3

M9999-062408-A

Absolute Maximum Ratings

(1)

Operating Ratings

(2)

Junction Thermal Resistance

Electrical Characteristics

(4)

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

3.0

6.0

V

Under-Voltage Lockout

Threshold

(turn-on)

2.45

2.55

2.65

V

UVLO Hysteresis

100

mV

Quiescent Current

570

900

µA

Shutdown Current

2

15

µA

[Adjustable] Feedback

Voltage

0.98

1.02

V

FB pin input current

1

nA

Current Limit in PWM Mode

3.5

5

A

Output Voltage Line

Regulation

0.07

%

%

Output Voltage Load

Regulation

0.2

%

Maximum Duty Cycle

100

%

PWM Switch ON-

Resistance

110

mΩ

mΩ

Oscillator Frequency

2

MHz

Enable Threshold

0.5

0.85

1.3

V

Enable Hysteresis

50

mV

Enable Input Current

0.1

2.3

µA

Power Good Range

±7

±10

%

Power Good Resistance

150

300

Ω

Over-Temperature

Shutdown

160

°C

Over-Temperature

Hysteresis

25

°C

Notes:

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

2. It is recommended that a transient input voltage may not exceed operating rating of the device for more that 5% of the time and in no case should the

transient voltage exceed the absolute maximum rating of the device.

3. Specification for packaged product only.