LMR51440
- Functional Safety-Capable
- Configured for rugged industrial applications
- Wide Input voltage range: 4 V to 36 V
- 4-A or 5-A continuous output current
- ±1.0% tolerance voltage reference at room temperature
- Minimum switching-on time: 75 ns (typical)
- Low Quiescent current: 25 µA
- Adjustable Frequency: 200 kHz to 1.1 MHz
- Frequency spread spectrum (PFM variant)
- Protection features
- Precision enable input
- Open-drain PGOOD
- VIN undervoltage lockout (UVLO)
- Cycle-by-cycle current limiting
- Short-circuit protection with hiccup mode
- Thermal shutdown
- Low dropout mode operation
- Junction temperature range: –40°C to 150°C
- Small solution size and ease of use
- Integrated synchronous rectification
- Internal compensation for ease of use
- WSON-12 package
- Various options in pin-to-pin compatible package
- PFM and forced PWM (FPWM) options
- Create a custom design using the LMR5144x0 with the WEBENCH® Power Designer
The LMR514x0 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 4-A or 5-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and FPWM version to achieve constant frequency, and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally which allows the device to be used with minimum external components.
The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR514x0 is available in WSON-12 package.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | LMR514x0, 36-V, 4-A/5-A Synchronous Step-Down DC/DC Converter With Low IQ datasheet | PDF | HTML | 2022/12/05 |
Functional safety information | LMR51440 and LMR51450 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2022/11/21 |
설계 및 개발
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LMR51450EVM — LMR51450 동기 스텝다운 컨버터 평가 모듈
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
WSON (DRR) | 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