Ti's 2-channel drive features heat sharing and complies with the aec-q100 standard for automotive applications

Texas Instruments' TPS92622-Q1 dual-channel LED driver includes a unique thermal management design to reduce temperature rise on the device. The TPS92622-Q1 is a linear driver powered directly from the car battery, with large voltage variations and a full current load of up to 150 mA per channel output. External shunt resistors are drivers that share output current and dissipated power.

The device has a full range of diagnostic features, including LED open circuit, LED short turn to ground circuit and device overtemperature protection. The one-fault all-fault feature can work with other LED drivers such as the TPS9261x-Q1, TPS9262x-Q1, TPS9263x-Q1 and TPS92830-Q1 devices to meet different requirements.

Features

● AEC-Q100-qualified for automotive applications:
-   Temperature range Grade 1 TA: -40°C to +125°C
● Wide input voltage range: 4.5 V to 40 V
● Thermal sharing by an external shunt resistor
● Low supply current in fault mode
● Two high-precision current regulators:
-   Current output: up to 150 mA for each channel
-   Accuracy: ±5% over the full temperature range
-   Independent current setting by a resistor
-   Independent PWM pin for brightness control
● Low dropout voltage (max.): 350 mV for 150 mA
● Diagnostics and protection:
-   LED open-circuit with auto-recovery
-   LED short-to-GND with auto-recovery
-   Diagnostic enable with adjustable threshold
-   Fault-bus is configurable as one-fails-all-fail or only-failed-channel off (N-1)
-   Thermal shutdown
● Operation junction temperature range: -40°C to +150°C

Applications

● External rear light: rear light, central high parking light, side sign
● Car external light: door handle, blind spot detection indicator, charging port
● Automotive interior lights: overhead lights and reading lights
● Universal LED driver