이 제품의 최신 버전이 있습니다
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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TPS61169 38V High Current-Boost WLED Driver With PWM Control datasheet (Rev. B) | PDF | HTML | 2024. 6. 16 | |
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 기술 문서 | Overcoming common design challenges in an UV sterilization box system | PDF | HTML | 2020. 7. 27 | ||
| 애플리케이션 노트 | Simple Backlight Driver Dimming Performance | 2017. 3. 20 | |||
| 애플리케이션 노트 | Analog PWM Dimming in White-LED Drivers | 2016. 12. 21 | |||
| 애플리케이션 노트 | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016. 10. 24 | |||
| 애플리케이션 노트 | Schottky Diode Selection in Asynchronous Boost Converters | 2016. 9. 6 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.