TPS92630QPWPRQ1 LED Driver: Pinout, Manufacturer, and Datasheet

The TPS92630QPWPRQ1  is a three-channel constant-current regulator with individual PWM  dimming for high-brightness red or white LEDs in vehicle lighting. When paralleled, each channel has a current capability of up to 150  mA, for a total current capability of 450 mA. The device ensures that channels and devices are well-matched in terms of current. LED common-cathode connections are possible with a high-side current source.

Even when differing numbers of LEDs are connected to the output, the complex control loop allows for great precision between channels. Each channel is dimmed or disabled when a separate PWM  channel is used.

Automotive LED Lighting Applications, Such As:

• Daytime Running Light

• Position Light

• Fog Light

• Rear Light

• Stop or Taillight

• Interior Lighting

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Footprint

3D Models

• 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 MultipleICs or Multiple Channels of a Single IC

• Low Dropout Voltage

– Max. Dropout: 40  0 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 DeglitchTimer

• 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 ShutdownFailure Reporting, Allowing Parallel Bus Connection up to 15 Devices

• Device Accommodates a Slow Input-Voltage dV/dt(0.5 V/min) With No Issues

• Operating Junction Temperature Range –40°C to150°C

• Package: 16-Pin Thermally Enhanced PWP Package (HTSSOP)

1. Constant LED  -Current Setting

Control of the three LED output channels is through separate linear current regulators. A common external resistor sets the current in each channel.

2. PWM Control

The device features a separate PWM dimming control pin for each output channel. PWM inputs also function as shutdown pins when output is unused.

3. FAULT Diagnostics

The TPS92630QPWPRQ1 device has two fault pins, FAULT  and FAULT  _S. FAULT  _S is a dedicated fault pin for the single LED short failure and FAULT  is for general faults, that is, short, open, and thermal shutdown.

4. Short-Circuit Detection 

The device includes three internal comparators for LED  forward-voltage measurement. With external resistor dividers, the device compares total LED  forward voltage with the internal reference voltage. This feature enables the detection of one or more shorted LED  s.

5. Open-Load Detection 

Detection of an open-load condition occurs when the voltage across the channel, V(VIN) – V(IOUTx), is less than the open-load detection voltage, V(OLV)

6. Thermal Foldback 

The TPS92630-Q1 device integrates thermal shutdown protection to prevent the device from overheating.