LMP8481-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Bidirectional or Unidirectional Sensing
- Common Mode Voltage Range: 4.0 V to 76 V
- Supply Voltage Range: 4.5 V to 76 V
- Fixed Gains: 20, 60, and 100 V/V
- Gain Accuracy: ±0.1%
- Offset: ±80 µV
- Bandwidth (–3 dB): 270 kHz
- Quiescent Current: < 100 µA
- Buffered High-Current Output: > 5 mA
- Input Bias Current: 7 µA
- PSRR (DC): 122 dB
- CMRR (DC): 124 dB
The automotive-qualified LMP8480-Q1 and LMP8481-Q1 devices are precision, high-side, current-sense amplifiers that amplify a small differential voltage developed across a current-sense resistor in the presence of high input common-mode voltages. These amplifiers are designed for bidirectional (LMP8481-Q1) or unidirectional (LMP8480-Q1) current applications and accept input signals with a common-mode voltage range from 4 V to 76 V with a bandwidth of 270 kHz. Because the operating power-supply range overlaps the input common-mode voltage range, the LMP848x-Q1 can be powered by the same voltage that is being monitored. This benefit eliminates the need for an intermediate supply voltage to be routed to the point of load where the current is being monitored, resulting in reduced component count and board space.
The LMP848x-Q1 family consists of fixed gains of 20, 60, and 100 for applications that demand high accuracy over temperature. The low-input offset voltage allows the use of smaller sense resistors without sacrificing system error. The LMP8480-Q1 and LMP8481-Q1 are pin-for-pin replacements for the MAX4080 and MAX4081 devices, offering improved offset voltage, wider reference adjust range, and higher output drive capabilities. The LMP8480-Q1 and LMP8481-Q1 are available in an 8-pin VSSOP package.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LMP848x-Q1 Automotive, 76-V, High-Side, High-Speed, Current-Sense Amplifier datasheet (Rev. A) | PDF | HTML | 2017年 2月 24日 |
Application brief | Current Mode Control in Switching Power Supplies (Rev. E) | PDF | HTML | 2023年 4月 12日 | |
Application brief | Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) | PDF | HTML | 2023年 4月 7日 | |
Application brief | Switching Power Supply Current Measurements (Rev. E) | PDF | HTML | 2023年 4月 7日 | |
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 2022年 1月 25日 | |
User guide | LMP8480EVM Current Shunt Monitors Guide (Rev. A) | 2013年 3月 19日 |
設計與開發
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封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點