Smart High-Side Power Switch

BTS5235-2L

Block Description and Electrical Characteristics

Data Sheet

10

Rev.1.1, 2008-09-01

5

Block Description and Electrical Characteristics

5.1

Power Stages

The power stages are built by N-channel vertical power MOSFETs (DMOS) with charge pumps.

5.1.1

Output On-State Resistance

The on-state resistance

R

shows that dependencies for the typical on-state resistance. The behavior in reverse polarity mode is described

in Section 6.2.

Figure 4

Typical On-State Resistance

5.1.2

Input Circuit

Figure 5 shows the input circuit of the BTS5235-2L. There is an integrated input resistor that makes external

components obsolete. The current sink to ground ensures that the device switches off in case of open input pin.

The zener diode protects the input circuit against ESD pulses.

Figure 5

Input Circuit (IN1 and IN2)

30

40

50

60

70

80

90

-50 -25

0

25

50

75 100 125 150

T /

°C

40

60

80

100

120

140

160

0

5

10

15

20

25

IN

GND

Input.emf