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Features for the TPS92630-Q1
Qualified for Automotive Applications AEC-Q100 Qualified With the Following Results: Device Temperature Grade 1: –40°C to 125°C Ambient Operating TemperatureRange 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 Fault Pin for Open, Short, and Thermal Shutdown Failure 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 to 150°C Package: 16-Pin Thermally Enhanced PWP Package (HTSSOP) Description for the TPS92630-Q1
The TPS92630-Q1 device is a three-channel linear LED driver with analog and PWM dimming control. Its full-diagnostic and built-in protection capabilities make it a suitable choice 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 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 devices.
The included temperature monitor reduces the LED drive current if the device 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 pinto ground. Output of the junction temperature as an analog voltage is available as a factory program option.
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