June 2000

5

MIC2182

MIC2182

Micrel

Parameter

Condition

Min

Typ

Max

Units

Reference Output (Fixed Versions Only)

Reference Voltage

1.220

1.245

1.270

V

Reference Line Regulation

6V < V

1

mV

Reference Load Regulation

0

µA < I

mV

Enable/UVLO

Enable Input Threshold

0.6

1.1

1.6

V

UVLO Threshold

2.2

2.5

2.8

V

Enable Input Current

V

0.1

5

µA

Soft Start

Soft-Start Current

V

–3.5

–5

–6.5

µA

Current Limit

Current-Limit Threshold Voltage

V

75

100

135

mV

Error Amplifier

Error Sense Amplifier Gain

20

Current Amp

Current Sense Amplifier Gain

2.0

Oscillator Section

Oscillator Frequency

270

300

330

kHz

Maximum Duty Cycle

86

%

Minimum On-Time

V

140

250

ns

SYNC Threshold Level

0.7

1.3

1.9

V

SYNC Input Current

V

0.1

5

µA

SYNC Minimum Pulse Width

200

ns

SYNC Capture Range

Note 6

330

kHz

Frequency Foldback Threshold

measured at VOUT pin

0.75

0.95

1.15

V

Foldback Frequency

60

kHz

Gate Drivers

Rise/Fall Time

C

60

ns

Output Driver Impedance

source

5

8.5

Ω

sink

3.5

6

Ω

Driver Nonoverlap Time

80

ns

PWM Input

PWM Input Current

V

–10

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 in series with 100pF.

Note 4.

25

°C limits are 100% production tested. Limits over the operating temperature range are guaranteed by design and are not production tested.

Note 5.

V

Note 6.

See applications information for limitations on the maximum operating frequency.