SMM605

Preliminary Information

Summit Microelectronics, Inc

2064 1.1 09/16/03

4

Pin

Number

1

Pin

Type

Pin Name

Pin Description

41

36

31

26

21

16

IN

Voltage monitor pin. Connect to the DC-DC converter + sense line or +Vout

pin.

44

39

34

29

24

19

OUT

Output voltage used to margin and/or trim converter voltages. Connect to the

converter Trim input or to the VADJ or FB pin of an adjustable output switching

regulator or LDO through a resistor.

45

40

35

30

25

20

I/O

External sample and hold capacitor input used to set the voltage on the TRIM

pins.

48

IN

VDD_CAP

External capacitor input used to filter the internal supply rail.

47

PWR

12VIN

12V power supply input internally regulated to 3.6 or 5.5V. Input range is 6V to

14V using the 3.6V internal regulator setting and 10V to 14V using the 5.5V

internal regulator setting.

46

PWR

VDD

2.7V to 5.5V Power supply of the part.

5,6,12,13

GND

GND

Ground of the part.

PIN DESCRIPTIONS