PCIM: 24 channel LED driver for vehicles

Author: EIS Release Date: Jun 18, 2024

Novosense Microelectronics announced a 24 channel automotive LED driver at PCIM in Nuremberg today.

Novosense package
NSL21924 is a high-side driver, aimed at rear lights, exterior lights and general automotive interior and body lighting.

16 channel NSL21916 is also available.

Qualification is to AEC-Q100 Grade 1 (Tj = -40 to +150°C).

The LED supply voltage can be across 3 to 16V, and up to 100mA can be supported on each channel. Dropout is 600mV max at 50mA.

Separately, the device needs its own supply between 4 and 40V, according to the provisional data sheet.

“A 2bit global and 6bit individual current setting combined with 12bit independent PWM dimming and phase shift PWM dimming capabilities ensure flexible LED brightness control,” according to the company. “On-board programmable eeprom allows the same device to be configured for different applications.”

On top of this, a built-in UART supports control and diagnostics, and this interface can be combined with an external CAN physical layer.

Diagnostics include LED open-circuit, LED short-to-ground and single LED short-circuit.

“A configurable watchdog timer can be used to automatically configure failsafe states when connection to the host microcontroller is lost, and a thermal sharing mechanism that dissipates heat via a shunt resistor protects against excessive temperature rises,” said Novosense.

Packaging for both devices is 9.70 x 4.40mm surface-mount HTSSOP38, with a thermal pad.

See the part at PCIM in Nuremberg until 13 June 2024 on stand 636 in hall 9.