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
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS61169 38V High Current-Boost WLED Driver With PWM Control datasheet (Rev. B) | PDF | HTML | 2024/06/16 |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
| Technical article | Overcoming common design challenges in an UV sterilization box system | PDF | HTML | 2020/07/27 | |
| Application note | Simple Backlight Driver Dimming Performance | 2017/03/20 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 2016/12/21 | ||
| Application note | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016/10/24 | ||
| Application note | Schottky Diode Selection in Asynchronous Boost Converters | 2016/09/06 | ||
| User guide | Using the TPS61169 Evaluation Module | 2014/11/11 |
설계 및 개발
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TPS61169EVM — TPS61169EVM WLED 드라이버 평가 보드
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 (...)
TPS61169 Unencrypted PSpice Transient Model Package (Rev. B)
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TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TIDA-01579 — 이미징 애플리케이션을 위한 고효율, 저출력 리플 전원 공급 장치 레퍼런스 설계
TIDA-01586 — 데이/나이트 비전을 포함하는 IP 네트워크 카메라용 IR LED 조명 및 ICR 제어 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-SC70 (DCK) | 5 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.