TPS61169
- 2.7V to 5.5V input voltage
- Integrated 40V, 1.8A MOSFET
- Drives LED string up to 38V
- 1.2A minimum switch current Limit
- 1.2MHz switching frequency
- 204mV reference voltage
- Internal compensation
- PWM brightness control
- Open LED protection
- Undervoltage protection
- Built-in soft-start
- Thermal shutdown
- Up to 90% efficiency
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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS61169 38V High Current-Boost WLED Driver With PWM Control datasheet (Rev. B) | PDF | HTML | 2024年 6月 16日 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
| Technical article | Overcoming common design challenges in an UV sterilization box system | PDF | HTML | 2020年 7月 27日 | |
| Application note | Simple Backlight Driver Dimming Performance | 2017年 3月 20日 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 2016年 12月 21日 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016年 10月 24日 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 2016年 9月 6日 | ||
| User guide | Using the TPS61169 Evaluation Module | 2014年 11月 11日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。