LMP8645HV
- Typical Values, TA = 25°C
- High Common-Mode Voltage Range
- LMP8645 –2 V to 42 V
- LMP8645HV –2 V to 76 V
- Supply Voltage Range 2.7 V to 12 V
- Gain Configurable With a Single Resistor
- Maximum Variable Gain Accuracy (With External Resistor) 2%
- Transconductance 200 µA/V
- Low Offset Voltage 1 mV
- Input Bias 12 µA
- PSRR 90 dB
- CMRR 95 dB
- Temperature Range −40°C to 125°C
- 6-Pin SOT Package
The LMP8645 and the LMP8645HV devices are precision current sense amplifiers that detect small differential voltages across a sense resistor in the presence of high-input common-mode voltages.
Operating from a supply range of 2.7 V to 12 V, the LMP8645 accepts input signals with a common-mode voltage range of –2 V to 42 V, while the LMP8645HV accepts input signals with a common-mode voltage range of –2 V to 76 V. The LMP8645 and LMP8645HV have adjustable gain for applications where supply current and high common-mode voltage are the determining factors. The gain is configured with a single resistor, providing a high level of flexibility, as well as accuracy as low as 2% (maximum) including the gain setting resistor. The output is buffered to provide low output impedance. This high-side current sense amplifier is ideal for sensing and monitoring currents in DC or battery-powered systems, has excellent AC and DC specifications over temperature, and keeps errors in the current sense loop to a minimum. The LMP8645 is an ideal choice for industrial, automotive, and consumer applications, and is available in SOT-6 package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LMP8645, LMP8645HV Precision High Voltage Current Sense Amplifier datasheet (Rev. H) | PDF | HTML | 2022. 5. 2 | |
| 애플리케이션 노트 | Using a PCB Copper Trace as a Current Sense Shunt Resistor (Rev. A) | PDF | HTML | 2026. 4. 27 | ||
| e북 | An Engineer's Guide to Current Sensing (Rev. B) | 2022. 4. 12 |
설계 및 개발
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CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
TIDA-00302 — 과도 안정성을 갖춘 전류 션트 모니터 레퍼런스 디자인
This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |