LM25085
- LM25085-Q1 is an Automotive Grade product that is
AEC-Q100 Grade 1 Qualified (–40°C to 125°C
Operating Junction Temperature) - Wide 4.5V to 42V Input Voltage Range
- Adjustable Current Limit Using RDS(ON) or a
Current Sense Resistor - Programmable Switching Frequency to 1MHz
- No Loop Compensation Required
- Ultra-Fast Transient Response
- Nearly Constant Operating Frequency with Line and
Load Variations - Adjustable Output Voltage from 1.25V
- Precision ±2% Feedback Reference
- Capable of 100% Duty Cycle Operation
- Internal Soft-Start Timer
- Integrated High Voltage Bias Regulator
- Thermal Shutdown
The LM25085 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultra-fast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for over-current detection.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM25085 / -Q1 42V Constant On-Time PFET Buck Switching Controller datasheet (Rev. J) | PDF | HTML | 2014/11/03 |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Application note | Transient Response versus Ripple – An Analysis of Ripple Injection Techniques | 2014/04/28 | ||
| Application note | Automated Frequency Response Analyzer | 2013/10/09 | ||
| EVM User's guide | AN-1905 LM25085 Evaluation Board (Rev. B) | 2013/04/26 | ||
| Application note | Constant Current Constant Voltage Buck Converter w/LM25085 (Rev. A) | 2013/04/23 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
LM25085MYEVAL — LM25085 - 42V 넓은 Vin COT(Constant-On-Time) PFET 벅 스위칭 컨트롤러용 평가 보드
The LM25085 evaluation board provides the design engineer with a fully functional buck regulator, employing the LM25085 PFET switching controller which uses the constant on-time (COT) operating principle. The evaluation board provides a 5V output over an input range of 5.5V to 42V. The circuit (...)
| 패키지 | 핀 | 다운로드 |
|---|---|---|
| HVSSOP (DGN) | 8 | 옵션 보기 |
| VSSOP (DGK) | 8 | 옵션 보기 |
| WSON (NGQ) | 8 | 옵션 보기 |
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