LM5126A-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: TA = –40°C to +125°C
- Functional Safety-Capable
- Input voltage 4.5V to 42V
- Minimum 2.5V for V(BIAS) ≥4.5V or VOUT ≥6V
- Output voltage 6V to 60V
- 2% accuracy, internal feedback resistors
- Bypass operation for VI > VOUT
- Dynamic output voltage tracking
- Digital PWM tracking (DTRK)
- Analog tracking (ATRK)
- Overvoltage protection (64V, 50V, 35V, 28.5V)
- Low shutdown IQ of 2µA
- Low operating IQ of 1mA
- 3-phase operation with LM5125A-Q1
- Switching frequency from 100kHz to 2.2MHz
- Synchronization to external clock (SYNCIN)
- Dynamically selectable switching modes (FPWM, diode emulation)
- Spread spectrum (DRSS)
- Selectable dead time (14ns to 200ns)
- Current sense resistor or DCR sensing
- Average inductor current monitor
- Average input current limit
- Programmable current limit
- Selectable delay time
- Power good indicator
- Programmable VI undervoltage lockout (UVLO)
- Lead-less QFN-32 packable with wettable flanks
The LM5126A-Q1 is a synchronous boost controller. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. The device can be stacked in combination with LM5125A-Q1 for 3-phase operation.
Dynamically program VOUT using the analog or digital ATRK/DTRK function. VI is supported down to 2.5V after startup as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 4.5V. The fixed switching frequency is set between 100kHz and 2.2MHz through a resistor on the RT-pin or the SYNCIN clock. The switching modes FPWM or diode emulation can be changed during operation.
The implemented protections peak current limit, average input current limit, average inductor current monitor, overvoltage and undervoltage protection, and the thermal shutdown protect the device and the application.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 날짜 |
|---|---|---|---|---|
| * | Data sheet | LM5126A-Q1, Wide-VIN, Single-Phase, Boost Controller with VOUT Tracking datasheet | PDF | HTML | 2025/11/26 |
| Functional safety information | LM5126A-Q1 and LM51261A-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2025/10/24 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM5126AEVM-BST — LM5126A 평가 모듈
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RHB) | 32 | 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
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.