May 2003

3

MIC2145

MIC2145

Micrel

V

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage

2.4

16

V

Shutdown Current

EN = 0.3V, V

0.5

5

µA

Quiescent Current

EN = V

200

300

µA

Feedback Voltage Reference

(

±2%)

1.058

1.08

1.102

V

(

±3%)

1.048

1.112

V

Comparator Hysteresis

18

mV

Feedback Input Current

V

40

nA

Peak Current Limit

R

0.8

A

R

0.9

A

Current Limit Comparator

500

ns

Propagation Delay

Switch On-Resistance

I

500

750

m

Ω

I

250

400

m

Ω

Maximum Off Time

1000

ns

Enable Input Voltage

Logic Low (turn-off)

1.1

0.7

V

Logic High (turn-on)

1.5

1.1

V

Enable Input Current

V

–1

0.01

1

µA

V

–1

0.01

1

µA

Soft Start Current

V

–8

–12

–16

µA

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

Ω in series with 100pF.

Note 4.

The current is measured in a DC mode. Actual peak switching current will be higher due to internal propagation delay of the circuit.

Note 5.

V

Note 6.

Specification for packaged product only.

Supply Voltage (V

Switch Voltage (V

Feedback Voltage (V

Switch Current (I

Enable Voltage(V

RSET Voltage (V

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

Ambient Storage Temperature(T

Supply Voltage (V

Switch Voltage (V

Ambient Temperature (T

Junction Temperature (T

Package Thermal Resistance MSOP

θ

θ