LP8867-Q1
- AEC-Q100 Qualified for automotive applications:
- Device temperature grade 1:
–40°C to +125°C, TA
- Device temperature grade 1:
- Functional safety
capable
- Documentation available to aid functional safety system design
- 3-, 4-Channel 120-mA current sinks
- High dimming ratio of 10 000:1 at 100 Hz
- Current matching 1% (typical)
- LED String current up to 120 mA per channel
- Outputs can be combined externally for higher current per string
- Integrated boost and SEPIC converter for LED
string power
- Input voltage operating range 4.5 V to 40 V
- Output voltage up to 45 V
- Integrated 3.3-A Switch FET
- Switching frequency 300 kHz to 2.2 MHz
- Switching synchronization input
- Spread spectrum for lower EMI
- Fault detection and protection
- Fault output
- Input voltage OVP, UVLO and OCP
- Boost block SW OVP and output OVP
- LED open and short fault detection
- Power-Line FET control for battery bus protection
- Automatic LED current reduction with external temperature sensor
- Thermal shutdown
The LP8867-Q1, LP8869-Q1 is an automotive highly-integrated, low-EMI, easy-to-use LED driver with DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four or three high-precision current sinks that can be combined for higher current capability.
The DC-DC converter has adaptive output voltage control based on the LED forward voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP886x-Q1 to avoid disturbance for sensitive frequency band.
The input voltage range for the LP886x-Q1 is from 4.5 V to 40 V to support automotive start-stop and load dump condition. The LP886x-Q1 integrates extensive fault detection features.
관심 가지실만한 유사 제품
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LP8867-Q1, LP8869-Q1 Low EMI Automotive LED Driver with 4-, 3- Channels datasheet (Rev. B) | PDF | HTML | 2020. 1. 16 | |
| 애플리케이션 노트 | Implementing Analog Thermal Foldback with the LP8867-Q1 and TMP61-Q1 | PDF | HTML | 2021. 6. 22 | ||
| 기능 안전 정보 | 자동차 및 산업 분야의 기능적 안전성 인증 간소화 | Download English Version | 2020. 6. 9 | ||
| 기능 안전 정보 | LP886x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) | 2020. 2. 14 | |||
| 애플리케이션 노트 | Some Guidelines and Tips for the LED Driver Application | 2019. 8. 14 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LP8867Q1EVM — 차량용 조명을 위한 4채널 LED 드라이버 평가 모듈
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.