L99DZ300G datasheet(2/157 Pages) STMICROELECTRONICS

2 / 157 page

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Digital thermal clusters

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Device contains temperature warning and protection

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Open-load diagnosis for all the outputs

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Overcurrent protection for all the outputs

Description

The L99DZ300G is a door zone system IC providing electronic control modules with enhanced power

management power supply functionality, including various standby modes, as well as LIN and CAN FD physical

communication layers. The device has two low drop voltage regulators to supply the system microcontroller and

external peripheral loads such as sensors and provides enhanced system standby functionality with

programmable local and remote wake-up capability. Moreover, the 10 high-side drivers (9 to supply LEDs and 1 to

supply bulbs) increase the system integration level; all the high-side drivers support the constant current mode for

LED module with high input capacitance. Up to 5 DC motors and 4 external MOS transistors in H-bridge

configuration can be driven in PWM mode up to 25 kHz. An additional gate drive can control an external MOSFET

in high-side configuration to supply a resistive load connected to GND (for example mirror heater). An

electrochromic mirror glass can be controlled using the integrated SPI-driven module in conjunction with an

external MOS transistor. All the outputs are SC protected and implement an open-load diagnosis. The ST

standard SPI interface (4.0) allows control and diagnosis of the device and enables generic software

development.

L99DZ300G

DS13902 - Rev 11

page 2/157

L99DZ300G Datasheet(PDF) 2 Page - STMicroelectronics