IR3312(S)

WWW.IRF.COM

3

Symbol

Parameter

Min.

Typ.

Max. Units Test Conditions

Tdon

Turn-on delay time to Vcc-Vout= 0.9 Vcc

2

9

20

Tr1

Rise time to Vcc-Vout=5V

0.2

1

5

Tr2

Rise time to Vcc -Vout = 0.1Vcc

5

15

60

Eon

Turn ON energy

—

0.75

1.5

mJ

Tdoff

Turn-off delay to Vcc -Vout = 0.1Vcc

5

14

60

Tf

Fall time to Vcc-Vout = 0.9 Vcc

2

7

25

Eoff

Turn OFF energy

—

0.5

1

mJ

see figure 2

µs

see figure 3

µs

Switching Electrical Characteristics

4) Input thresholds are measured directly between the input pin and the tab. Any parasitic resistance in common between the load

current path and the input signal path can significantly affect the thresholds.

5) Rds(on) is measured between the Tab and the Out pin, 5mm away from the package.

Protection Characteristics

Tj = 25

Symbol

Parameter

Min.

Typ.

Max. Units

Test Conditions

VIfb -Vin

@ Isd

Over-current shutdown threshold

4

4.5

5.4

V

Tsd

Over-temp. shutdown threshold

—

165

—

°C

see Fig. 7

Treset

Protection reset time

—

50

300

µS

see Fig. 7

OV

Over voltage shutdown (not latched)

33

36

41

V

Isdf

Fixed over current shutdown

30

37

45

A

VIfb<Vin

Isd_1k

Adjustable over current shutdown 1K

9

12

16

A

RIfb=1k

Min.Pulse

Minimum pulse width (no WAIT state)

200

500

1200

µs

see Fig. 6

WAIT

WAIT function timer

0.5

1.2

3.5

ms

see Figs. 6 and 7

Rev.Rdson Rds(on) reverse battery protection

10

16

28

m

Ω

Vcc-Vin=-12V, Iload=5A

Static Electrical Characteristics

(Tj = 25

Vout=12V

V

m

Ω

V

Symbol

Parameter

Min.

Typ.

Max. Units

Test Conditions

Iq

Total quiescent current (Iout +Ifb)

—

22

50

µA

Vcc-Vin=0, Vcc-

Vcc-VIfb=12V

Iin

Input current

1.5

4

6

mA

Vcc-Vin=14V

Vih

High level input threshold voltage (4)

—5

5.5

Vil

Low level input threshold voltage (4)

3.5

4

—

Vhys

Input hysterisis = Vih-Vil

0.4

1

1.5

Iout qs

Output quiescent current

—

9

15

µA

Vcc-Vin=0; Vcc-VIfb=0;

Vcc-Vout=12V

Rds1 on

ON state resistance (5)

10

15

20

Iout=15A, Vcc-Vin=14V

Rds2 on

ON state resistance (5)

10

16

28

Iout=10A, Vcc -Vin=6V

Rds3 on

ON state resistance (5)

20

28.5

38

Vclamp1

Vcc to Vout active clamp voltage

33

35

—

Iout = 10mA

Vclamp2

Vcc to Vout active clamp voltage

—

36

40

Iout=30A,Vcc-VIfb<20V

Vsd

Body diode forward voltage

—

0.85

1

Iout=5A

Vaval.

Vcc to Vout avalanche voltage

40

43

50

Iout=100mA,Vcc-Vfb> 35V