Q67100-H8646 datasheet(3/13 Pages) SIEMENS

Part #	Q67100-H8646

Description	General-Purpose Power Controller

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Manufacturer	SIEMENS [Siemens Semiconductor Group]

Direct Link	http://www.siemens.com/

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Semiconductor Group

3

PSB 2121

Pin Definitions and Functions

Pin No.

P-DSO

Pin No.

P-DIP

Symbol Input (I)

Output (O)

Definition

Function

11

V

REF

O

Reference

voltage

Output of the 4.0 V reference

voltage.

22

I

P

I

Positive current

sense

When the voltage difference

between these two pins exceeds

100 mV, the digital current limiting

becomes active.

43

I

N

I

Negative

current sense

5

4

GND

I

Ground

All analog and digital signals are

referred to this pin.

6

5

GA

O

Gate

Totem-pole output driver, has to be

connected with the gate of an

external power switch.

76

V

EXT

I/O

External supply

Output of the internal CMOS

supply. Via

V

EXT the internal CMOS-

circuits can be supplied from an

external DC-supply in order to

reduce chip power dissipation.

97

C

SS

I

Soft start

capacitor

The capacitor at this pin determines

the soft start characteristic.

10

8

V

S

I

Battery voltage

V

S is the positive input voltage.

11

9

PWMP

I

Pulse width

modulator

Non-inverting input of the pulse

width modulator.

12

10

EO

O

Error amplifier output.

14

11

V

P

I

Positive

voltage sense

Non-inverting input of the error

amplifier.

15

12

V

N

I

Negative

voltage sense

Inverting input of the error amplifier.

16

13

UV

I

Undervoltage

detection

The undervoltage lockout can be

programmed via UV.

17

14

SYNC

I/O

Synchronization This pin can be used as an input for

synchronization of the oscillator to

an external frequency, or as an

output to synchronize multiple

devices.

19

15

OR

I

R-oscillator

The external timing components of

the ramp generator are attached to

OR and OC.

20

16

OC

I

C-oscillator

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