FDQ7238AS_NF40 datasheet(3/9 Pages) FAIRCHILD

Part #	FDQ7238AS_NF40

Description	Dual Notebook Power Supply N-Channel PowerTrench in SO-14 Package

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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FDQ7238AS Rev A (X)

Electrical Characteristics

T

A

= 25°C unless otherwise noted

Symbol

Parameter

Test Conditions

Type

Min

Typ

Max Units

Switching Characteristics (Note 2)

td(on)

Turn-On Delay Time

Q2

Q1

12

9

21

18

ns

tr

Turn-On Rise Time

Q2

Q1

13

5

23

10

ns

td(off)

Turn-Off Delay Time

Q2

Q1

30

27

49

43

ns

tf

Turn-Off Fall Time

VDD = 15 V,

ID = 1 A,

VGS = 10V,

RGEN = 6 Ω

Q2

Q1

19

4

35

8

ns

td(on)

Turn-On Delay Time

Q2

Q1

17

11

30

20

ns

tr

Turn-On Rise Time

Q2

Q1

18

15

32

26

ns

td(off)

Turn-Off Delay Time

Q2

Q1

28

16

44

29

ns

tf

Turn-Off Fall Time

VDD = 15 V,

ID = 1 A,

VGS = 4.5V,

RGEN = 6 Ω

Q2

Q1

13

9

23

18

ns

Qg(TOT)

Total Gate Charge, VGS = 10V

Q2

Q1

28

17

39

24

nC

Qg(TOT)

Total Gate Charge, VGS = 5V

Q2

Q1

15

9

21

19

nC

Qgs

Gate-Source Charge

Q2

Q1

4.1

2.7

nC

Qgd

Gate-Drain Charge

Q2

VDS = 15 V, ID = 14A

Q1

VDS = 15 V, ID = 11A

Q2

Q1

4.9

3.3

nC

Drain-Source Diode Characteristics and Maximum Ratings

IS

Maximum Continuous Drain-Source Diode Forward Current

Q2

Q1

3.4

2.1

A

VSD

Drain-Source Diode Forward

Voltage

VGS = 0 V,

IS = 3.4 A

(Note 2)

VGS = 0 V,

IS = 1.9 A

(Note 2)

VGS = 0 V,

IS = 2.1 A

(Note 2)

Q2

Q1

0.5

0.4

0.7

1.2

V

trr

Diode Reverse Recovery Time

22

ns

Qrr

Diode Reverse Recovery Charge

IF = 14A

dIF/dt = 300 A/µs

Q2

15

nC

trr

Diode Reverse Recovery Time

16

ns

Qrr

Diode Reverse Recovery Charge

IF = 11A

dIF/dt = 100 A/µs

Q1

5

nC

NOTE :

1.

RθJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the solder mounting

surface of the drain pins. RθJC is guaranteed by design while RθCA is determined by the user's board design.

Scale 1 : 1 on letter size paper

2. Pulse Test: Pulse Width < 300

µs, Duty Cycle < 2.0%

3. FDQ7238AS_NL is a lead free product. The FDQ7238AS_NL marking will appear on the reel label.

4. FDQ7238AS_NF40 is a lead free product. The FDQ7238AS_NF40 marking will appear on the reel label.

a)

68°C/W when

mounted on a 1in

2 pad

of 2 oz copper (Q1).

b)

52°C/W when

mounted on a 1in

2 pad

of 2 oz copper (Q2).

c)

118°C/W when mounted

on a minimum pad of 2 oz

copper (Q1).

d)

94°C/W when mounted on

a minimum pad of 2 oz

copper (Q2).

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