LM3537
- 8-channel Backlight Capability
- Internal ALS Engine; PWM Input to Support CABC
- Built-In Power Supply and Gain Control for Ambient Light Sensor
- Up to 90% Efficiency
- Adaptive Charge Pump with 1x and 1.5x Ggains for Maximum Efficiency
- 128 Dimming Steps for Group A, Exponential or Linear Dimming Selectable by Register Setup
- 8 Linear Dimming States for Group B
- 4 Programmable LDOs (300 mA/150 mA Output Currents)
- Default Startup Voltage States
- Low Dropout Voltage: 100 mV typ. at 150 mA Load Current
- LDO Input Voltage = 1.8V to VIN_A
- Overload Protection
- Wide Input Voltage Range: 2.7V to 5.5V
- I2C-Compatible Serial Interface
- 2 General-Purpose Outputs
Lighting:
LDOs:
Combined Common Features:
All trademarks are the property of their respective owners.
The LM3537 is a highly integrated LED driver capable of driving 8 LEDs in parallel for single display backlighting applications. Independent LED control allows for a subset of the main display LEDs to be selected for partial illumination applications.
I2C-compatible control allows full configurability of the backlighting function. The LM3537 provides multi-zone Ambient Light Sensing allowing autonomous backlight intensity control in the event of changing ambient light conditions. A PWM input is also provided to give the user a means to adjust the backlight intensity dynamically based upon the content of the display.
Four integrated LDOs are fully configurable through I2C capable of addressing point-of-load regulation needs for functions such as integrated camera modules. The LDOs can be powered from main battery source, or by a fixed output voltage of an external buck converter (post regulation) leading to higher conversion efficiency.
The LM3537 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or in Pass Mode. The proper gain for maintaining current regulation is chosen, based on LED forward voltage, so that efficiency is maximized over the input voltage range.
LM3537 is offered in a tiny 30-bump DSBGA package.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM3537 8-Channel WLED Driver with Four Integrated LDOs datasheet (Rev. B) | 2013/05/03 | |
| White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
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 (...)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| DSBGA (YFQ) | 30 | 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