Micrel Inc.

MIC4451/4452

January 2011

3

M9999-011811

Absolute Maximum Ratings

(1,2, 3)

Supply Voltage ..............................................................20V

PDIP ..................................................................960mW

SOIC ................................................................1040mW

5-Pin TO-220 ............................................................2W

5-Pin TO-220 .......................................................12.5W

Derating Factors (to Ambient)

PDIP ..............................................................7.7mW/°C

SOIC ..............................................................8.3mW/°C

5-Pin TO-220 ..................................................17mW/°C

Storage Temperature ................................

−65°C to +150°C

Lead Temperature(10 sec) ........................................ 300°C

Operating Ratings

Operating Temperature (Chip) .................................. 150°C

Operating Temperature (Ambient)

Z Version .................................................. 0°C to +70°C

Y Version.............................................

−40°C to + 85°C

Thermal Impedances (To Case)

5-Pin TO-220(θJC) ........................................... 10°C/W

Electrical Characteristics

(4)

Symbol

Parameter

Condition

Min.

Typ.

Max.

Units

Input

Logic 1 Input Voltage

2.4

1.3

V

Logic 0 Input Voltage

1.1

0.8

V

Input Voltage Range

−5

V

Input Current

−10

10

μA

Output

High Output Voltage

See Figure 1

V

Low Output Voltage

See Figure 1

.025

V

Output Resistance,

Output High

0.6

1.5

Ω

Output Resistance, Output Low

0.8

1.5

Ω

Peak Output Current

12

A

Continuous Output Current

2

A

Latch-up Protection

Withstand Reverse Current

Duty Cycle ≤ 2%

t ≤ 300μs

>1500

mA

Switching Time

(3)

Rise Time

20

40

ns

Fall Time

24

50

ns

Delay Time

Test Figure 1

25

50

ns

Delay Time

Test Figure 1

40

60

ns

Power Supply

Power Supply Current

0.4

80

1.5

150

mA

μA

Operating Input Voltage

4.5

V