The TS19501CB10H from Taiwan Semiconductor is an AEC-Q100-qualified dimmable LED controller with spread spectrum frequency modulation to reduce EMI.
The device is suitable for automotive LED lighting, such as high-beam and low-beam headlights, daytime running lights, and turn-signal indicators.
Housed in a tiny MSOP-10EP package, the TS19501CB10H single-channel LED driver offers low-side current sense and operates in continuous-conduction, discontinuous-conduction, and boundary-conduction modes with full protection and diagnostics. It also supports boost, buck-boost, and SEPIC topologies. The part operates over a temperature range of -40°C to +125°C and integrates a 150 mV, ±3.3% voltage reference. Specifications include an input voltage range of 4.5 V to 42 V and adjustable switching frequency from 70 kHz to 700 kHz.
Output current regulation is based on average current-mode control supervised by a control loop. The fault flag is connected to a pull-up resistor from VDC for fault status. Protection functions include overvoltage, overcurrent, overtemperature and undervoltage lockout.
The TS19501CB10H is currently in stock and samples are available.
>> This article was originally published on our sister site, EDN.