Automotive Three-Channel Linear LED Driver with Analog and PWM Dimming - TPS92630-Q1

TPS92630-Q1 (ACTIVE)

Automotive Three-Channel Linear LED Driver with Analog and PWM Dimming


The TPS9263x-Q1 devices are three-channel linear LED drivers with analog and PWM dimming control. Their full-diagnostic and built-in protection capabilities make them the ideal solution for variable-intensity LED lighting applications up to the medium-power range.

The design of this device suits it well for driving LEDs configured as a single string or multiple strings within its power capability. A single device can drive up to three strings with one to three LEDs in each string at a total current of up to 150 mA per channel. Outputs can be paralleled to provide higher current drive capability to 450 mA.

In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED strings. So, the application needs is only a single return wire instead of one return wire per LED string that a system with low-side current sense would need.

A single-LED short comparator allows detection of single LED failing with a short circuit. Fault output can support bus connection topology between multiple ICs.

The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. One can program the temperature threshold through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • 3-Ch. LED Driver With Analog and PWM Dimming
  • Wide Input-Voltage Range: 5 V–40 V
  • Adjustable Constant Output Current Set by
    Reference Resistor
    • Max. Current: 150 mA per Channel
    • Max. Current: 450 mA in Parallel Operation Mode
    • Accuracy: ±1.5% per Channel When
      I(IOUTx) > 30 mA
    • Accuracy: ±2.5% per Device When
      I(IOUTx) > 30 mA
  • Parallel Outputs for Higher Current Using
    Multiple ICs or Multiple Channels of a
    Single IC
  • Low Dropout Voltage
    • Max. Dropout: 400 mV at 60 mA per Channel
    • Max. Dropout: 0.9 V at 150 mA per Channel
  • Independent PWM Dimming per Channel
  • Open and Shorted LED Detection With Deglitch Timer
  • LED-String Voltage Feedback per Channel for Single-LED
    Short Detection
  • Separate Fault Pin for Single-LED Short Failure
  • Fault Pin for Open, Short, and Thermal Shutdown Failure
    Reporting, Allowing Parallel Bus Connection up to 15
  • IC Accommodates a Slow Input-Voltage dV/dt
    (0.5 V/min) With No Issues
  • Two Options for Device Temperature Information
    • TPS92630-Q1: Temperature-Current Foldback to Prevent
      Thermal Shutdown, With Programmable Threshold
    • TPS92631-Q1: Analog Voltage Output Proportional
      to the Device Temperature
  • Operating Junction Temperature Range –40°C to 150°C
  • Package: 16-Pin Thermally Enhanced PWP Package (HTSSOP)

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Parametrics Compare all products in Automotive LED Driver

Channels (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Iq (Typ) (mA)
LED Current Per Channel (mA)
Operating Temperature Range (C)
Special Features
Package Group
Estimated Package Size (WxL) (mm2)
Approx. Price (US$)
Topology (Nom)
TPS92630-Q1 TL4242-Q1 TPS92638-Q1
3     1     8    
5     4.5     5    
40     42     40    
  0     0    
40     40     40    
0.45     0.5     0.56    
0.6     12     0.6    
150       70    
-40 to 125     -40 to 105
-40 to 125    
-40 to 125    
Thermal Foldback     Thermal Shutdown     Thermal Foldback    
16HTSSOP: 4.4 x 5: 32 mm2     8SON: 4 x 4: 16 mm2
7DDPAK/TO-263: 9.25 x 10: 113 mm2    
20HTSSOP: 4.4 x 6.5: 42 mm2    
0.90 | 1ku     0.40 | 1ku     1.20 | 1ku    
Current Source     Current Source     Current Source    
Automotive     Automotive     Automotive    
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