TPS92623 Series
Automotive three-channel high-side LED driver with thermal sharing
Manufacturer: Texas Instruments
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Key Features
• AEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to 125°C, TAWide input voltage range: 4.5 V to 40 VThermal sharing by external shunt resistorLow supply current in fault modeThree high-precision current regulation:Up to 150-mA current output for each channel±5% accuracy over full temperature rangeIndependent current setting by resistorIndependent PWM pin for brightness controlLow dropout voltage:Maximum dropout: 600 mV for 150 mADiagnostics and protectionLED open-circuit with auto-recoveryLED short-to-GND with auto-recoveryDiagnostic enable with adjustable thresholdFault bus configurable as either one-fails–all-fail or only-failed-channel off (N-1)Thermal shutdownOperation junction temperature range:–40°C to 150°CAEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to 125°C, TAWide input voltage range: 4.5 V to 40 VThermal sharing by external shunt resistorLow supply current in fault modeThree high-precision current regulation:Up to 150-mA current output for each channel±5% accuracy over full temperature rangeIndependent current setting by resistorIndependent PWM pin for brightness controlLow dropout voltage:Maximum dropout: 600 mV for 150 mADiagnostics and protectionLED open-circuit with auto-recoveryLED short-to-GND with auto-recoveryDiagnostic enable with adjustable thresholdFault bus configurable as either one-fails–all-fail or only-failed-channel off (N-1)Thermal shutdownOperation junction temperature range:–40°C to 150°C
Description
AI
The TPS92623-Q1 three-channel LED driver includes a unique thermal management design to reduce temperature rising on the device. The TPS92623-Q1 is a linear driver directly powered by automotive batteries with large voltage variations to output full current loads up to 150 mA per channel. External shunt resistors are leveraged to share output current and dissipate power out of the driver. The device’s full-diagnostic capabilities include LED open, LED short-to-GND circuit and device overtemperature protection.
The one-fails–all-fail feature of TPS92623-Q1 is able to work together with other LED drivers, such as the TPS9261x-Q1, TPS9262x-Q1, TPS92630/8-Q1, and TPS92830-Q1 devices, to address different requirements.
The TPS92623-Q1 three-channel LED driver includes a unique thermal management design to reduce temperature rising on the device. The TPS92623-Q1 is a linear driver directly powered by automotive batteries with large voltage variations to output full current loads up to 150 mA per channel. External shunt resistors are leveraged to share output current and dissipate power out of the driver. The device’s full-diagnostic capabilities include LED open, LED short-to-GND circuit and device overtemperature protection.
The one-fails–all-fail feature of TPS92623-Q1 is able to work together with other LED drivers, such as the TPS9261x-Q1, TPS9262x-Q1, TPS92630/8-Q1, and TPS92830-Q1 devices, to address different requirements.