Micrel, Inc.

MIC2289

July 2007

3

M9999-071007

Absolute Maximum Ratings

(1)

EDS Rating

Operating Ratings

(2)

Package Thermal Resistance

2mm x 2mm MLF

Electrical Characteristics

(4)

Symbol

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

2.5

10

V

Under Voltage Lockout

1.8

2.1

2.4

V

Quiescent Current

2.5

5

mA

Shutdown Current

(5)

0.1

1

µA

Feedback Voltage

(±5%)

90

95

100

mV

Feedback Input Current

–450

nA

Line Regulation

(6)

0.5

1

%

Load Regulation

(6)

0.5

%

Maximum Duty Cycle

85

90

%

Switch Current Limit

750

mA

Switch Saturation Voltage

450

mV

Switch Leakage Current

0.01

5

µA

Enable Threshold

TURN ON

TURN OFF

1.5

0.4

V

V

Enable Pin Current

20

40

µA

Oscillator Frequency

1.05

1.2

1.35

MHz

Schottky Forward Drop

0.8

1

V

Schottky Leakage Current

4

µA

Overvoltage Protection

MIC2289-15

MIC2289-24

MIC2289-34

13

21

30

14

22.5

32

16

24

34

V

V

V

Overtemperature

Threshold Shutdown

Hysteresis

150

10

°C

°C

Notes

:

1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating

temperature, and the regulator will go into thermal shutdown.

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

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

4. Specification for packaged product only.

6. Guaranteed by design