October 2005

3

MIC2198

MIC2198

Micrel, Inc.

ESD,

Note 3 ................................................................ 2kV

Package Thermal Resistance

Parameter

Condition

Min

Typ

Max

Units

Feedback Voltage Reference

(±1%)

0.792

0.8

0.808

V

Feedback Voltage Reference

(±2%)

0.784

0.816

V

Feedback Voltage Reference

0.776

0.824

V

Feedback Bias Current

10

nA

Output Voltage Range

0.8

6

V

Output Voltage Line Regulation

0.03

%/V

Output Voltage Load Regulation

0.5

%

Quiescent Current

excluding external MOSFET gate drive current

3.5

5

mA

Shutdown Quiescent Current

0.1

5

µA

4.7

5.0

5.3

V

Undervoltage Lockout

4.25

4.4

V

3.95

4.1

V

Enable/UVLO

Enable Input Threshold

(rising)

0.6

1.1

1.6

V

UVLO Threshold

(rising)

2.2

2.5

2.8

V

Enable Input Current

0.1

5

µA

Current Limit

Current Limit Threshold Voltage

55

75

95

mV

Error Amplifier

Transconductance Error Amplifier GM

0.2

mS

Oscillator Section

Oscillator Frequency

450

500

550

kHz

Maximum Duty Cycle

70

76

%

Minimum On-Time

150

200

ns

Frequency Foldback Threshold

0.25

0.40

0.55

V

Foldback Frequency

125

kHz

Gate Drivers

Rise/Fall Time

60

ns

Output Driver Impedance

source

5

8.5

Ω

sink

3.5

6

Ω

Driver Non-Overlap Time

80

ns

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 protected; however, handling precautions are recommended. Human body model, 1.5k in series with 100pF.

Note 4. Specification for packaged product only.