LTC4242xUHF

Dual Slot Hot Swap Controller for PCI Express, WQFN-38

Schematic Symbol

Pin Configuration (39 pins)

Pin	Name	Type
1	AUXON1	input
2	3V_OUT1	open_collector
3	3V_GATE1	output
4	3V_SENSE1	input
5	3V_IN1	power_in
6	AUXIN1	input
7	VCC	power_in
8	AUXIN2	input
9	3V_IN2	power_in
10	3V_SENSE2	input
11	3V_GATE2	output
12	3V_OUT2	open_collector
13	AUXON2	input
14	ON2	input
15	FON2	input
16	~{EN2}	input
17	~{FAULT2}	open_collector
18	~{AUXFAULT2}	open_collector
19	~{PGOOD2}	open_collector
20	~{AUXPGOOD2}	open_collector
21	12V_IN2	power_in
22	12V_SENSE2	input
23	12V_GATE2	output
24	12V_OUT2	open_collector
25	AUXOUT2	output
26	GND	power_in
27	AUXOUT1	output
28	12V_OUT1	open_collector
29	12V_GATE1	output
30	12V_SENSE1	input
31	12V_IN1	power_in
32	~{AUXPGOOD1}	open_collector
33	~{PGOOD1}	open_collector
34	~{AUXFAULT1}	open_collector
35	~{FAULT1}	open_collector
36	~{EN1}	input
37	FON1	input
38	ON1	input
39	EPAD	power_in

Footprint

Confirmed

Package_DFN_QFN/WQFN-38-1EP_5x7mm_P0.5mm_EP3.15x5.15mm

Pad Layout

—

—

—

—

—

—

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

Pads (45)

Number	Type
—	smd
—	smd
—	smd
—	smd
—	smd
—	smd
1	smd
2	smd
3	smd
4	smd
5	smd
6	smd
7	smd
8	smd
9	smd
10	smd
11	smd
12	smd
13	smd
14	smd
15	smd
16	smd
17	smd
18	smd
19	smd
20	smd
21	smd
22	smd
23	smd
24	smd
25	smd
26	smd
27	smd
28	smd
29	smd
30	smd
31	smd
32	smd
33	smd
34	smd
35	smd
36	smd
37	smd
38	smd
39	smd

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