2/26/2008

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6

iP1206PbF

Pin Description

Pin Number

Pin Name

Description

1

CC2

Compensation pin for Error Amplifier 2

2

SS2

Soft Start/Shutdown pin for output 2

3

VIN2

Input supply voltage connection to output 2

4, 6, 13, 15

PGND

Power Ground

5

VSW2

Voltage Switching Node for output 2 – pin connection to the output inductor

7

VCB2

Boot strap capacitor pin for output 2 - connect a 0.1µF from this pin to VSW2

8

OC2

Over current threshold setting pin for output 2

9

VCH

Supply voltage for internal high side FET drivers of both outputs

10

VCL

Supply voltage for internal low side FET drivers of both outputs

11

OC1

Over current threshold setting pin for output 1

12

VCB1

Boot strap capacitor pin for output 1 - connect a 0.1µF from this pin to VSW1

14

VSW1

Voltage Switching Node for output 1 – pin connection to the output inductor

16

VIN1

Input supply voltage connection to output 1

17

SS1

Soft Start/Shutdown pin for output 1

18

CC1

Compensation pin for Error Amplifier 1

19

FB1

Inverting input for Error Amplifier 1

20

FB1S

Output over voltage protection sense pin for output 1

21

SEQ

Sequence Enable pin

22

SYNC

External clock synchronization pin – when not in use, leave pin floating

23

PGOOD2

Power Good status pin of output 2 – output is open collector

24

VP1

Non-inverting input of error amplifier 1

25

VP2

Non-inverting input of error amplifier 2

26

VREF

Internal voltage reference pin - connect a 100pF from this pin to AGND

27

PGOOD1

Power Good status pin of output 1 – output is open collector

28

VCC

Input supply voltage of internal control IC - connect a 1.0µF from this pin to AGND

29

VO3

Output of internal regulator used to supply VCH – connect a 1.0µF from this pin to PGND

30

TRACK

Secondary non-inverting input to Error Amplifier 2 – used to set the type of power up/down

sequence of the output voltages

31

ENABLE

Master enable pin. Recycling this pin will reset OV, SS, and Pre-Bias latch for both outputs.

32

NC

No connect. This pin is not for electrical connection.

33

RT

Switching frequency setting pin

34

FB2S

Output over voltage protection sense pin for output 2

35

FB2

Inverting input for Error Amplifier 2

36

AGND

Analog Ground