TPS923622
- 2.5V to 5.5V input voltage
- 1.2V I/O Compatible for ADIM pin
- Integrated 280mΩ/600mΩ LS/HS switch FETs
- Up to 95% efficiency
- 130nA ultra-low shutdown current
- High-accuracy PWM controlled analog dimming down to 0.1% dimming ratio
- Drives LED string up to 30V
- Switch current limit
- 1.8A for TPS923621
- 2.25A for TPS923622
- FCCM with 1.1MHz switching frequency options
- 200mV feedback voltage
- Internal compensation
- Protection Features
- Over-voltage protection
- Over-current protection
- Under-voltage lockout protection
- Thermal shutdown
The TPS923621/2 is a synchronous boost LED driver that integrates both low-side and high-side switch FETs. It features an ultra-low 130nA shutdown current. The TPS923621/2 can drive single or parallel LED strings for LCD back lighting and general illumination.
The feedback voltage is regulated to 200mV and the output current is set by an external sensor resistor, RSET, as shown in the Simplified Schematic. During operation, a PWM signal applied to ADIM pin adjusts the feedback voltage proportionally to the PWM duty cycle, enabling precise analog dimming. The TPS923621/2 supports PWM controlled analog dimming with ratio as low as 0.1%, along with FCCM operation, avoiding audible noises at the output since current modulation remains purely analog.
The TPS923621/2 integrates over-voltage protection that disables the power stage to prevent the output voltage from exceeding the absolute maximum voltage rating during LED open conditions. The TPS923621/2 also provides over-current protection, under-voltage lockout protection and thermal shutdown protection.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | TPS923621/2 30V Synchronous Boost LED Driver with Ultra-low Shutdown Current and 0.1%-ratio PWM Controlled Analog Dimming datasheet | PDF | HTML | 2025/10/20 |
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 착수하기 (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| WSON (DRV) | 6 | 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