LM36922
- 1% Matched Current Sinks Across (Process,
Voltage, Temp) - 3% Current Sink Accuracy Across (Process,
Voltage, Temp) - 11-Bit Dimming Resolution
- Up to 91.6% Solution Efficiency
- Drives from One to Two Parallel LED Strings at up
to 28 V - 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, 21 V, 25 V, 29 V) - Four Configurable Overcurrent Protection
Thresholds (750 mA, 1000 mA, 1250 mA, 1500
mA) - Thermal Shutdown Protection
The LM36922 is an ultra-compact, highly efficient, two string white-LED driver designed for LCD display backlighting. The device can power up to 8 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 and noise-free operation.
The device operates over the 2.5-V to 5.5-V input voltage range and 40°C to 85°C temperature range.
관심 가지실만한 유사 제품
비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM36922 Highly Efficient Dual-String White LED Driver datasheet | PDF | HTML | 2015. 5. 13 | |
| 애플리케이션 노트 | How to use the LM3697 Device to Design a Backlight Unit in a Smartphone | PDF | HTML | 2021. 4. 15 | ||
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 애플리케이션 노트 | Analog PWM Dimming in White-LED Drivers | 2016. 12. 21 | |||
| 애플리케이션 노트 | Inductor Selection in Boost Converters for LCD Backlight Applications | 2016. 10. 24 | |||
| 애플리케이션 노트 | Schottky Diode Selection in Asynchronous Boost Converters | 2016. 9. 6 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
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 (...)
SNVC167 — LM36923EVM/LM36922EVM GUI Software
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| DSBGA (YFF) | 12 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.