Taiwan Semiconductor LED controller for automotive headlight

The TS19501CB10 from Taiwan Semiconductor is a highly integrated dimmable LED controller with spread spectrum frequency modulation, designed for automotive headlights. It allows automotive lighting designers to reduce the cost and complexity. The TS19501CB10 LED controller is designed to operate in high voltage boost (step-up) and boost-buck (step-up and step-down) topologies. It accepts a wide battery voltage range and operates within an ambient temperature range from -40 °C to 125 °C.

Key features​

• Operating Ambient Temperature Range: -40 °C to 125 °C
• Drives LEDs in Boost, Buck-Boost, and SEPIC Topologgy
• Operation in DCM, BCM, CCM Mode
• Input Voltage: 4.5 V to 38 V (Absolute Max. 42 V)

Additional features

• Adjustable Switching Frequency from 70 kHz to 700 kHz
• Low-Side Current Sense
• Internal Voltage Reference 150 mV ± 3.3%
• Both PWM Dimming and Analog Dimming
• Over Voltage Protection (OVP)
• Over Current Protection (OTP)
• Over Temperature Protection (OTP)
• Under Voltage Lockout (UVLO)
• Spread Spectrum Clock Reduces EMI
• Fault Status Flag
• Internal Soft Start
• Not AEC-Q100 Qualified

Applications

• Automotive LED Lighthing
• General Lighthing Applications
• High Brightness LED Applications