LP5024
- Operating voltage range:
- VCC range: 2.7V to 5.5V
- EN, SDA, and SCL pins compatible with 1.8V, 3.3V, and 5V power rails
- Output maximum voltage: 6V
- 24 constant-current sinks with high precision
- 25.5mA maximum per channel with VCC in full range
- 35mA maximum per channel when VCC ≥ 3.3V
- Device-to-device error: ±7%; channel-to-channel error: ±7%
- Ultralow quiescent current:
- Shutdown mode: 1µA (maximum) with EN low
- Power saving mode: 10µA (typical) with EN high and all LEDs off for > 30ms
- Integrated 12-bit, 29kHz PWM generator for each channel:
- Independent color-mixing register per channel
- Independent brightness-control register per RGB LED module
- Optional logarithmic- or linear-scale brightness control
- Integrated 3-phase PWM-shifting scheme
- 3 programmable banks (R, G, B) for easy software control of each color
- 2 external hardware address pins allow connecting up to 4 devices
- Broadcast slave address allows configuring multiple devices simultaneously
- Auto-increment allows writing or reading consecutive registers within one transmission
- Up to 400kHz fast-mode I2C speed
In smart homes and other applications that use human-machine-interaction, high-performance RGB LED drivers are required. LED animation effects such as flashing, breathing, and chasing greatly improve user experience, and minimal system noise is essential.
The LP50xx device is an 18- or 24-channel constant current sink LED driver. The LP50xx device includes integrated color mixing and brightness control, and pre-configuration simplifies the software coding process. Integrated 12-bit, 29kHz PWM generators for each channel enable smooth, vivid color for LEDs, and eliminate audible noise.
The LP50xx device controls each LED output with a 12-bit PWM resolution at 29kHz switching frequency, which helps achieve a smooth dimming effect and eliminates audible noise. The independent color mixing and intensity control registers make the software coding straightforward. When targeting a fade-in, fade-out type breathing effect, the global R, G, B bank control reduces the microcontroller loading significantly. The LP50xx device also implements a PWM phase-shifting function to help reduce the input power budget when LEDs turn on simultaneously.
The LP50xx device implements an automatic power-saving mode to achieve ultralow quiescent current. When channels are all off for 30ms, the device total power consumption is down to 10µA, which makes the LP50xx device a potential choice for battery-powered end equipment.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LP50xx 18-, 24-Channel, 12-Bit, PWM Ultralow-Quiescent-Current, I2 C RGB LED Drivers datasheet (Rev. C) | PDF | HTML | 2024. 7. 8 | |
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 애플리케이션 노트 | System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device | 2020. 4. 8 | |||
| 애플리케이션 노트 | How to Select a RGB LED Driver | 2019. 8. 8 | |||
| 백서 | 스마트 스피커 기본 사항: 설계 장단점 따져 보기 | Download English Version | 2019. 2. 8 | ||
| 기술 문서 | Using an RGBW LED driver to elevate LED human-machine interface designs | PDF | HTML | 2018. 11. 27 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LP5024EVM — LP5024 12비트 PWM 초저 정동작 전류 I2C RGB LED 드라이버 평가 모듈
이 보드는 LP5024 I2C 버스 제어, 24채널, 정전류 LED 드라이버를 평가합니다. 사용 설명서에는 설정 지침, 회로도 다이어그램, 재료 사양서, 인쇄 회로 보드 레이아웃 도면 및 소프트웨어 지침이 포함되어 있습니다.
SLVC713 — LP50EVM GUI
TIDA-050011 — 다양한 LED 링 조명 패턴 레퍼런스 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RSM) | 32 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.