LP5012
- Operating voltage range:
- VCC range: 2.7 V to 5.5 V
- EN, SDA, and SCL pins compatible with 1.8-V, 3.3-V, and 5-V power rails
- Output maximum voltage: 6 V
- 12 Constant-current sinks with high precision
- 25.5 mA Maximum per channel with VCC in full range
- 35 mA Maximum per channel when VCC ≥ 3.3 V
- Device-to-device error: ±5%; channel-to-channel error: ±5%
- Ultra-low quiescent current:
- Shutdown mode: 1 µA (maximum) with EN low
- Power-saving mode: 10 µA (typical) with EN high and all LEDs off for > 30 ms
- Integrated 12-bit, 29-kHz 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 400-kHz 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 that greatly improves user experience, and minimal system noise is essential.
The LP50xx device is an 9- or 12-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, 29-kHz 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 29-kHz 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 ultra-low quiescent current. When channels are all off for 30 ms, the device total power consumption is down to 10 µA, which makes the LP50xx device a potential choice for battery-powered end equipment.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LP50xx 9-, 12-Channel, 12-Bit PWM Ultra-low Quiescent Current I2C RGB LED Drivrs datasheet (Rev. B) | 2020/08/21 | |
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 | System Design Guidelines for Full-Color RGB LED Matrix Based on LP50xx Device | 2020/04/08 | ||
Application note | How to Select a RGB LED Driver | 2019/08/08 | ||
EVM User's guide | LP5012EVM User's Guide | 2019/05/08 |
설계 및 개발
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LP5012EVM — LP5009 및 LP5012에 적합한 LP5012EVM, 12비트 PWM 초저 정동작 전류 I2C RGB LED 드라이버 평가 모듈
LP5012 UNENCRYPTED PSPICE TRANSIENT ENCRYPTED MODEL PACKAGE (Rev. B)
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
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패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
TSSOP (PW) | 24 | Ultra Librarian |
WQFN (RUK) | 20 | 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
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