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
●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)
