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TPS92629-Q1

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Automotive, single-channel, high-current 40-V high-side LED driver with thermal sharing

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Data sheet

TPS92629-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Topology Current Source Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 250 Features Analog Dimming, Distinguish Fault, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, PWM Dimming, Thermal Sharing, Thermal shutdown
Number of channels 1 Topology Current Source Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 250 Features Analog Dimming, Distinguish Fault, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, PWM Dimming, Thermal Sharing, Thermal shutdown
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, T A
  • Wide input voltage range: 4.5 V to 40 V
  • Thermal sharing by external shunt resistor
  • Low quiescent current
    • 10 uA with EN low in shutdown mode
    • Low supply current in fault mode
  • Single-channel high-precision current regulation:
    • Up to 250-mA output channel current
    • Integrated analog dimming and PWM dimming control
    • ±5% accuracy under PWM dimming mode over full temperature range
    • ±5% accuracy under analog dimming mode for 20%~100% maximum current over full temperature range
    • ±10% accuracy under analog dimming mode for 10%~20% maximum current over full temperature range
  • Low dropout voltage:
    • Maximum dropout: 350 mV for 150 mA
    • Maximum dropout: 500 mV for 250 mA
  • Diagnostics and protection
    • LED open-circuit with auto-recovery
    • LED short-to-GND with auto-recovery
    • LED short-to-battery with auto-recovery
    • Diagnostic enable with adjustable threshold for low-dropout operation
    • More safe system with multiple fault report capability
    • Thermal shutdown
  • Operation junction temperature range: –40°C to 150°C
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to 125°C, T A
  • Wide input voltage range: 4.5 V to 40 V
  • Thermal sharing by external shunt resistor
  • Low quiescent current
    • 10 uA with EN low in shutdown mode
    • Low supply current in fault mode
  • Single-channel high-precision current regulation:
    • Up to 250-mA output channel current
    • Integrated analog dimming and PWM dimming control
    • ±5% accuracy under PWM dimming mode over full temperature range
    • ±5% accuracy under analog dimming mode for 20%~100% maximum current over full temperature range
    • ±10% accuracy under analog dimming mode for 10%~20% maximum current over full temperature range
  • Low dropout voltage:
    • Maximum dropout: 350 mV for 150 mA
    • Maximum dropout: 500 mV for 250 mA
  • Diagnostics and protection
    • LED open-circuit with auto-recovery
    • LED short-to-GND with auto-recovery
    • LED short-to-battery with auto-recovery
    • Diagnostic enable with adjustable threshold for low-dropout operation
    • More safe system with multiple fault report capability
    • Thermal shutdown
  • Operation junction temperature range: –40°C to 150°C

The TPS92629-Q1 single-channel LED driver includes a unique thermal management design to reduce temperature rising on the device. The TPS92629-Q1 is a linear driver directly powered by automotive batteries with large voltage variations to output full current loads up to 250 mA. 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, LED short-to-battery circuit and device overtemperature protection. The high accuracy and optimized slew rate of analog dimming control supports off board long wire driving with enhanced EMC performance and eliminates the flick and afterimage issue. The multiple fault could be reported out by different voltage levels through fault pins for safety critical applications.

The TPS92629-Q1 single-channel LED driver includes a unique thermal management design to reduce temperature rising on the device. The TPS92629-Q1 is a linear driver directly powered by automotive batteries with large voltage variations to output full current loads up to 250 mA. 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, LED short-to-battery circuit and device overtemperature protection. The high accuracy and optimized slew rate of analog dimming control supports off board long wire driving with enhanced EMC performance and eliminates the flick and afterimage issue. The multiple fault could be reported out by different voltage levels through fault pins for safety critical applications.
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* Data sheet TPS92629-Q1 Single-Channel, Automotive High Side LED Driver With Thermal Sharing Control datasheet PDF | HTML 18 Jan 2022
Certificate TPS92629Q1EVM EU RoHS Declaration of Conformity (DoC) 10 Oct 2022
EVM User's guide TPS92629Q1EVM User's Guide PDF | HTML 28 Sep 2022
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
Technical article Take better selfies with innovative LED flashes 18 Nov 2014
Technical article Solving the automotive EMI issues in new cars with all the screens 11 Sep 2014

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Evaluation board

TPS92629Q1EVM — TPS92629-Q1 evaluation module for single-channel 40-V high-side LED driver with thermal sharing

The TPS92629Q1EVM evaluates the operation and performance of the TPS92629-Q1, a linear single-channel LED driver with full LED diagnostic for automotive lighting applications.

User guide: PDF | HTML
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