LM251772
- Input range from 3.5V to 36V
- Dynamical Vo programming via I2C from:
- 3.3V up to 48V in 20mV steps
- 1V up to 24V in 10mV steps
- Peak current regulation control
- Small voltage transition ripple over all operating modes
- Shut down quiescent current 3µA
- Operating quiescent current 60µA
- Drive (DRV) pin for dual role port power path
- Push-Pull output for fast pMOS FET control
- Configurable as charge pump driver stage for nMOS FET
- Operation mode selection for high efficiency in light load and high load conditions:
- Power save mode (Single Pulse/µSleep)
- Automatic conduction mode
- Integrated high voltage supply LDO
- Auxiliary high voltage LDO for PD-controller supply
- Integrated full-bridge gate drive
- 2A peak current capability
- Bootstrap over and under-voltage protection
- Integrated boot-strap diode
- Fixed frequency independent from operating mode (boost, buck-boost, buck)
- Forced PWM mode selectable
- Switching frequency from 100kHz to 600kHz
- External clock synchronization and clock output
- Average input or output current sensor
- Programmable from 0.5A to 7A in 50mA steps
- ISET pin selectable
- I2C Interface readout of monitoring features
- Commercial temperature range (Tj = 0°C to 70°C)
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Create a custom design using the LM251772 with the WEBENCH® Power Designer
The LM251772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The output voltage and average current can be dynamically programmed via the integrated I2C interface. The configuration range for output voltage and average current meet the USB-PD standard requirements. The integrated DRV pin can control a disconnect FET to support dual role port (DRP) requirements.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LM251772 36V 4-Switch Buck-Boost Controller with I2 C for USB-PD sourcing datasheet | PDF | HTML | 2024/10/10 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM51772EVM-HP — LM51772 평가 모듈
LM51772EVM-HP는 LM51772 와이드 VIN 벅-부스트 컨트롤러를 사용하여 유연한 고전력 벅-부스트 설계를 시연합니다. 평가 모듈은 입력 전압 범위 9V~48V에서 작동하도록 구성되어 있으며, 최대 5A의 부하 전류로 조정된 20V 출력을 제공합니다.
LM251772-QUICKSTART-CALC — LM251772 BuckBoost Quickstart Calculator Tool
지원되는 제품 및 하드웨어
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VQFN (RHA) | 40 | 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