LM36923H
- 1% Matched Current Sinks Across Process, Voltage, Temperature
- 3% Current-Sink Accuracy Across Process, Voltage, Temperature
- 11-Bit Dimming Resolution
- Up to 90% Solution Efficiency
- Drives from One to Three Parallel LED Strings at up to 38 V at 25 mA per String
- PWM Dimming Input
- I2C Programmable
- Selectable 500-kHz and 1-MHz Switching Frequency With Optional –12% shift
- Auto Switch Frequency Mode (250 kHz, 500 kHz, 1 MHz)
- Four Configurable Overvoltage Protection Thresholds (17 V, 24 V, 31 V, 38 V)
- Four Configurable Overcurrent Protection Thresholds (750 mA, 1000 mA, 1250 mA,
1500 mA) - Thermal Shutdown Protection
- Externally Selectable I2C Address Options via ASEL Input
The LM36923H is an ultra-compact, highly efficient, three-string white-LED driver designed for LCD display backlighting. The device can power up to 12 series LEDs at up to 25 mA per string. An adaptive current regulation method allows for different LED voltages in each string while maintaining current regulation.
The LED current is adjusted via an I2C interface or through a logic level PWM input. The PWM duty cycle is internally sensed and mapped to an 11-bit current thus allowing for a wide range of PWM frequencies with noise-free operation from 50 µA to 25 mA.
Other features include an auto-frequency mode, which can automatically change the frequency based on load current in order to optimize efficiency.
The device operates over the 2.5-V to 5.5-V input voltage range and a –40°C to +85°C temperature range.
For all available packages, see the orderable addendum at the end of the data sheet.기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LM36923H Highly Efficient Triple-String White LED Driver datasheet (Rev. B) | 2016/10/07 | |
White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
Application note | Analog PWM Dimming in White-LED Drivers | 2016/12/21 | ||
Application note | Auto-Frequency Mode Setting for Improved Boost Efficiency in White LED Backlight | 2016/10/14 | ||
EVM User's guide | Using the LM36923HEVM Evaluation Module | 2016/01/18 |
설계 및 개발
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LM36922EVM — LM36922 고효율 듀얼 스트링 백색 LED 드라이버 평가 모듈
The LM36922 Evaluation Module (LM36922EVM) is designed to fully evaluate the LM36922 Highly Efficient Dual-String White LED backlight driver. The LM36922EVM consists of the LM36922 with 2p8s white LED strings with jumpers to enable 1p2s through 2p8s led string configurations. LED string (...)
LM36923HEVM — LM36923H 고효율 삼중 스트링 백색 LED 드라이버 평가 모듈
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 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
DSBGA (YFF) | 12 | 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