BTS728L2 데이터 시트보기 (PDF) - Siemens AG

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BTS728L2

Smart High-Side Power Switch Two Channels: 2 x 60mΩ Status Feedback

Siemens AG 

BTS 728 L2

Truth Table

Channel 1 Input 1 Output 1 Status 1

Channel 2 Input 2 Output 2 Status 2

Normal

operation

Open load

Overtem-

perature

level

L

H

L

H

L

H

level

L

H

Z

H

L

L

BTS 728L2

H

H

H

L

H

L

L = "Low" Level

H = "High" Level

X = don’t care

Z = high impedance, potential depends on external circuit

Status signal valid after the time delay shown in the timing diagrams

Parallel switching of channel 1 and 2 is easily possible by connecting the inputs and outputs in parallel. The

status outputs ST1 and ST2 have to be configured as a ’Wired OR’ function with a single pull-up resistor.

Terms

Ibb

V bb

I IN1

IN1

3

Leadframe

Vbb

I L1

I ST1

ST1

4

V IN1 VST1

PROFET

Chip 1

GND1

OUT1

17,18

2

R GND1

IGND1

VON1

V OUT1

V

IN2

I IN2

7

I ST2

8

V ST2

Leadframe

Vbb

IN2

PROFET OUT2

Chip 2

ST2

GND2

6

R GND2

IGND2

I L2

13,14

VON2

V OUT2

Leadframe (Vbb) is connected to pin 1,10,11,12,15,16,19,20

External RGND optional; two resistors RGND1, RGND2 = 150 Ω or a single resistor RGND = 75 Ω for reverse

battery protection up to the max. operating voltage.

Semiconductor Group

Page 7

1999-Mar-23

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