TPS61161-Q1
- Qualified for Automotive Applications
- 2.7-V to 18-V Input Voltage Range
- 38-V Open LED Protection for 10 LEDs
- 200-mV Reference Voltage With ±2% Accuracy
- Flexible Digital and PWM Brightness Control
- Built-In Soft Start
- Up to 90% Efficiency
- 2-mm × 2-mm × 0.8-mm 6-pin QFN (DRV)
Package With Thermal Pad
With a 40-V rated integrated switch FET, the TPS61161-Q1 is a boost converter that drives up to 10 LEDs in series. The boost converter runs at 600-kHz fixed switching frequency to reduce output ripple, improve conversion efficiency, and allow for the use of small external components.
The default white LED current is set with the external sensor resistor Rset, and the feedback voltage is regulated to 200 mV, as shown in the 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 TPS61161-Q1 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 TPS61161-Q1 to prevent the output from exceeding the absolute maximum ratings during open LED conditions.
The TPS61161 is available in a space-saving, 2-mm × 2-mm QFN (DRV) package with thermal pad.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TPS61161-Q1 White Led Driver with Digital and Pwm Brightness Control for up to 10 LEDs In Series datasheet (Rev. A) | PDF | HTML | 2014. 11. 6 | |
| 애플리케이션 노트 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018. 12. 11 | |||
| 애플리케이션 노트 | How to Use Analog Dimming With TPS6116x | 2011. 8. 5 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
SLVC366 — Design Tool for Analog Dimming Using a PWM Signal
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (DRV) | 6 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.