ROHM Semiconductor BD18326NUF-M Constant Current Driver

ROHM Semiconductor BD18326NUF-M Constant Current (CC) Driver a constant current driver IC for driving automotive LED lamps that can withstand up to 40V. This current driver offers high reliability with built-in functions for the thermal de-rating function, the LED open detection, and the output short circuit protection. The BD18326NUF-M CC driver also offers over-voltage mute function, current-bypass function at reduced-voltage, output for fault flag function, and the input for output current OFF control signal. This CC driver is AEC-Q100 qualified and operates within -40°C to 150°C temperature range. Typical applications include automotive LED exterior lamps and automotive interior lamps.

Features

AEC-Q100 qualified
Functional safety supportive automotive products
CR timer for PWM dimming
Thermal de-rating function (THD)
LED open detection
Output Short Circuit Protection (OUT SCP)
SET pin Short Circuit Protection (SET SCP)

Over Voltage Mute (OVM) function
Current bypass function at reduced-voltage
Disable LED open detection function at reduced-voltage (OPM)
Output for fault flag/input for output current OFF
Control signal (PBUS)

Applications

Automotive LED exterior lamps:
- Rear lamp
- Turn lamp
- DRL/position lamp
- Fog lamp

Automotive interior lamps:
- Air conditioner lamp
- Interior light
- Cluster light

ROHM Semiconductor BD18326NUF-M Constant Current Driver

Features

Applications

Block Diagram

Typical Application Circuit

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