DB4679 Rev 1

7/16

L5964

Pins description

15

2

Pins description

2.1

LQFP64 pins description

Figure 2. LQFP64 pinout (bottom view)

1

2

3

5

6

4

7

8

9

10

27

11

28 29 30 31 32

59 58 57 56

54

55

53 52 51 50 49

43

42

41

39

38

40

48

47

46

44

45

22 23 24 25 26

60

61

62

63

64

17 18 19 20 21

37

36

34

33

35

12

13

14

15

16

LQFP-64

PGTH1

ENBUCK2

ENBUCK1

PHASE2

PHASE2

BS2

VINBUCK2

VINBUCK2

SUB

FDIVISION

SWGND2

SWGND1

FB2

COMP2

PGDELAY2/

PWUPDELAY

MODE

OCPSET1

PGOV2

PGOV1

PHASE1

PHASE1

BS1

VINBUCK1

VINBUCK1

FREQSET

TJTEST

PGLDO

FB1

COMP1

PGTHLDO

AGND

SUB

GADG2711170834PS

Table 2. LQFP64 pin list

N#

Pin name

Pin type

Pin description

1MODE

IN

Working mode: Pin floating sets the working Mode to Normal; shorted to

AGND sets the Microcontroller Mode.

2

PGDELAY2/

PWUPDELAY

IN

DC/DC2 Power good output delay time adjustable by connecting a

capacitor from PGDELAY2 to AGND. In Microcontroller Mode, a capacitor

sets the power up delay, from reset to watchdog input.

3

COMP2

IN/OUT

DC/DC2 Error amplifier output for compensation network connection.

4FB2

IN/OUT

DC/DC2 Output feedback. Connected to an error amplifier that compares

the feedback voltage to the internal reference voltage.