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

Description

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.

Features

  • 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
    Devices
  • 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 LED Lighting - Illumination

 
Input Voltage (Type)
Vin (Min) (V)
Vin (Max) (V)
Iout (Max) (A)
Vout (Min) (V)
Vout (Max) (V)
Regulated Outputs (#)
Dimming Method
Type
Vref (V)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS92630-Q1 TL4242-Q1 TPS92638-Q1
DC/DC
Linear    
DC/DC
Linear    
DC/DC
Linear    
5     4.5     5    
40     42     40    
0.15     0.5     0.07    
    0    
40     40     40    
3     1     8    
Analog
PWM    
Analog
PWM    
Analog
PWM    
Linear     Linear     Linear    
1.222     0.177     1.222    
Thermal Foldback     Thermal Shutdown     Thermal Foldback    
Automotive     Automotive     Automotive    
-40 to 125     -40 to 105
-40 to 125    
-40 to 125    
16HTSSOP     7DDPAK/TO-263
8SON    
20HTSSOP    
0.90 | 1ku     0.40 | 1ku     1.20 | 1ku    
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