With a 40V rated integrated switch FET, the TPS61169 is a boost converter that drives LEDs in series. The boost converter has a 40V, 1.8A internal MOSFET with minimum 1.2A current limit; thus it can drive single or parallel LED strings for small- to large-size panel backlighting. The default white LED current is set with the external sensor resistor, RSET, and the feedback voltage is regulated to 204mV, as shown in the Simplified Schematic. During the operation, the LED current can be controlled by using a pulse width modulation (PWM) signal applied to the CTRL pin, through which the duty cycle determines the feedback reference voltage. The TPS61169 does not burst the LED current; therefore, it does not generate audible noises on the output capacitor. For maximum protection, the device features integrated open LED protection that disables the TPS61169 to prevent the output voltage from exceeding the absolute maximum voltage ratings of the device during open LED conditions.
The TPS61169 is available in a space-saving 5-pin SC70 package.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | TPS61169 38V High Current-Boost WLED Driver With PWM Control datasheet (Rev. B) | PDF | HTML | 16 Jun 2024 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Technical article | Overcoming common design challenges in an UV sterilization box system | PDF | HTML | 27 Jul 2020 | |
| Application note | Simple Backlight Driver Dimming Performance | 20 Mär 2017 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 21 Dez 2016 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 24 Okt 2016 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 06 Sep 2016 | ||
| User guide | Using the TPS61169 Evaluation Module | 11 Nov 2014 |
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The Texas Instruments TPS61169EVM evaluation module (EVM) helps designers evaluate the operation and performance of the TPS61169, which are WLED driver providing highly integrated solutions for single-cell Li-ion battery powered backlight for small and media form factor LCD display. The EVM (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
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