LP8861-Q1
- Qualified for Automotive Applications
- AECQ100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Input Voltage Operating Range 4.5 V to 40 V
- Four High-Precision Current Sinks
- Current Matching 1% (Typical)
- LED String Current up to 100 mA/Channel
- Dimming Ratio of 10 000:1 at 100 Hz
- Integrated Boost/SEPIC Converter for LED String Power
- Output Voltage up to 45 V
- Switching Frequency 300 kHz to 2.2 MHz
- Switching Synchronization Input
- Spread Spectrum for Lower EMI
- Power-Line FET Control for Inrush Current Protection and Standby Energy Saving
- Extensive Fault Detection and Tolerance Features
- Fault Output
- Input Voltage OVP, UVLO, and OCP
- Open and Shorted LED Fault Detection
- Automatic LED Current Reduction With External Temperature Sensor
- Thermal Shutdown
- Minimum Number of External Components
The LP8861-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated boost/SEPIC converter. It has four high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal.
The boost/SEPIC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to lowest sufficient level in all conditions. The boost/SEPIC converter supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP8861-Q1 to avoid disturbance for AM radio band.
The LP8861-Q1 has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault and reduce inrush current and standby power consumption. The device can reduce LED current based on temperature measured with external NTC sensor to protect LED from overheating and extend LED lifetime.
The input voltage range for the LP8861-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The LP8861-Q1 integrates extensive fault detection and protection features.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LP8861-Q1 Low-EMI Automotive LED Driver With Four 100-mA Channels datasheet (Rev. C) | PDF | HTML | 2017/06/08 |
| Application note | Some Guidelines and Tips for the LED Driver Application | 2019/08/14 | ||
| White paper | Powering automotive displays to create interactive driving experiences | 2017/12/21 | ||
| Application note | PCB Layout Guideline for Automotive LED Drivers | 2017/04/07 | ||
| EVM User's guide | Using the LP8861-Q1EVM | 2015/07/08 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LP8861Q1EVM — 오토모티브 조명을 위한 LP8861-Q1 4채널 LED 드라이버 평가 모듈
The LP8861Q1EVM evaluation module (EVM) helps designers evaluate the operation and performance of this device. The LP8861Q1EVM uses the LP8861-Q1 to drive up to 4 LED strings (up to 12 LEDs each, 48 LEDs together) for LCD backlighting with high efficiency. Information about output (...)
LP8861-Q1 Boost and SEPIC Unencrypted PSpice Transient Model Package (Rev. C)
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TIDA-00503 — 오토모티브 SEPIC 백라이트 드라이버 레퍼런스 디자인
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| HTSSOP (PWP) | 20 | 옵션 보기 |
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.