With a 30V-rated integrated switch FET and power diode, the TPS61158 is a boost converter that drives LEDs in series. The boost converter runs at 750-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allows for the use of small external components.
The default white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200 mV, as shown in Typical Application. During the operation, the LED current can be controlled using the 1-wire digital interface (EasyScale™ protocol) through the CTRL pin. Alternatively, a pulse width modulation (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback reference voltage. In either digital or PWM mode, the TPS61158 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 TPS61158 to prevent the output voltage from exceeding the device absolute maximum voltage ratings during open LED conditions.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS61158 30-V WLED Driver with Integrated Power Diode datasheet (Rev. A) | PDF | HTML | 18 Jun 2015 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Technical article | Overcoming challenges for backlight LED drivers in automotive display solutions | 16 Jul 2020 | ||
| Application note | Simple Backlight Driver Dimming Performance | 20 Mar 2017 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 21 Dec 2016 | ||
| Technical article | Here's how body electronics and lighting technology are changing the driving experience | 26 Sep 2016 | ||
| Technical article | LED brightness adjustment: high-frequency PWM dimming | 26 Aug 2016 | ||
| Technical article | Take better selfies with innovative LED flashes | 18 Nov 2014 | ||
| EVM User's guide | TPS61158EVM-565 User's Guide | 23 Aug 2013 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | Download |
|---|---|---|
| WSON (DRV) | 6 | View options |
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