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Bosch Semiconductors

CJ950

18-channel low-side power switch

Application & Technical Summary

CJ950

CJ950 provides short-circuiting protection for 18 low-side stages. All channels are controlled and constantly monitored via a micro second channel (MSC) interface.

  • OUT1 and OUT3 with 3A nominal, 8A for 200 seconds maximum.
  • OUT9 and OUT10 for actuators with higher clamping energy.
  • Possible parallel connection of stages

Product benefits

  • Micro second channel (MSC) interface
  • Extensive diagnostic functions for each output channel: Short circuit to battery, short circuit to ground, open load, overtemperature warning
  • Stages are disabled when VDD is too low or too high. The same applies when the MSC monitoring detects an error, μC-reset is active or reset pin is pulled low.

Protected output stages

Clamping voltage of 55V (typ.) on all outputs

Technical Features

Type
18-channel low-side power switch
Package
PSO36
Features

  • Diagnosis: OL, SCG, SCB and OT
  • 5V monitoring
  • 2nd independent shut down path
  • 2 x lambda probe heater

Outputs

  • 4 x 0.6 A / 1800 mΩ / 55 V
  • 10 x 2.2 A / 500 mΩ / 55 V
  • 2 x 3 A / 260 mΩ / 55 V
  • 2 x 8 A / 150 mΩ / 55 V

Control inputs
TTL/CMOS logic, withstands 36V permanently
Interface
µsec bus
Vbat typ [V]
14
VDD typ. [V]
5
Tj min [°C]
-40
Tj max [°C]
150

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