Micrel, Inc.

MIC2164/-2/-3

September 2009

4

M9999-090409-B

Parameter

Condition

Min

Typ

Max

Units

Oscillator

Switching Frequency

(8)

MIC2164

MIC2164-2

MIC2164-3

0.225

0.45

0.75

0.3

0.6

1

0.375

0.75

1.25

MHz

MHz

MHz

Maximum Duty Cycle

(9)

MIC2164

MIC2164-2

MIC2164-3

87

74

66

%

%

%

Minimum Duty Cycle

Measured at DH

0

%

FET Drives

DH, DL Output Low Voltage

0.1

V

DH, DL Output High Voltage

or

V

DH On-Resistance, High State

2.1

3.3

Ω

DH On-Resistance, Low State

1.8

3.3

Ω

DL On-Resistance, High State

1.8

3.3

Ω

DL On-Resistance, Low State

1.2

2.3

Ω

LX Leakage Current

50

µA

HSD Leakage Current

20

µA

Thermal Protection

Over-temperature Shutdown

155

°C

Over-temperature Shutdown

Hysteresis

10

°C

Shutdown Control

En Logic Level Low

0.4

0.8

V

En Logic Level High

0.9

1.2

V

En Pull-up Current

50

µA

Note:

8. Measured in test mode.

9. Measured at DH. The maximum duty cycle is limited by the fixed mandatory off time Toff of typical 363ns.