MIC5011

Micrel, Inc.

MIC5011

2

July 2005

Pin Number

Pin Name

Pin Function

1

Supply; must be decoupled to isolate from large transients caused by the

power FET drain. 10µF is recommended close to pins 1 and 4.

2

Input

Turns on power MOSFET when taken above threshold (3.5V typical). Re-

quires <1 µA to switch.

3

Source

Connects to source lead of power FET and is the return for the gate clamp

zener. Can safely swing to –10V when turning off inductive loads.

4

Ground

5

Gate

Drives and clamps the gate of the power FET. Will be clamped to approxi-

mately –0.7V by an internal diode when turning off inductive loads.

6, 7, 8

C2, Com, C1

Optional 1nF capacitors reduce gate turn-on time; C2 has dominant effect.

–0.5V to 36V

Input Voltage, Pin 2

Source Voltage, Pin 3

Current into Pin 3

50mA

Gate Voltage, Pin 5

–1V to 50V

Junction Temperature

150°C

Power Dissipation

1.25W

100°C/W

170°C/W

Ambient Temperature: B version

–40°C to +85°C

Storage Temperature

–65°C to +150°C

Lead Temperature

260°C

(Soldering, 10 seconds)

4.75V to 32V high side

4.75V to 15V low side

Pin Configuration

Input

Source

Gate

1

2

3

4

8

MIC5011

7

6

5

V+

Gnd

C1

Com

C2