LMP8646
- Provides Circuit Protection and Current Limiting
- Single Supply Operation
- –2-V to 76-V Common-Mode Voltage Range
- Variable Gain Set by External Resistor
- Adjustable Bandwidth Set by External Capacitor
- Buffered Output
- 3% Output Accuracy Achievable at VSENSE = 100 mV
- Key Specifications:
- Supply Voltage Range 2.7 V to 12 V
- Output Current (Source) 0 to 5 mA
- Gain Accuracy 2.0% (max)
- Transconductance 200 µA/V
- Offset ±1 mV (Maximum)
- Quiescent Current 380 µA
- Input Bias 12 µA (Typical)
- PSRR 85 dB
- CMRR 95 dB
- Temperature Range −40°C to 125°C
- 6-Pin SOT Package
The LMP8646 is a precision current limiter used to improve the current limit accuracy of any switching or linear regulator with an available feedback node.
The LMP8646 accepts input signals with a common-mode voltage ranging from –2 V to 76 V. It has a variable gain which is used to adjust the sense current. The gain is configured with a single external resistor, RG, providing a high level of flexibility and accuracy up to 2%. The adjustable bandwidth, which allows the device to be used with a variety of applications, is configurable with a single external capacitor in parallel with RG. In addition, the output is buffered in order to provide a low output impedance.
The LMP8646 is an ideal choice for industrial, automotive, telecommunications, and consumer applications where circuit protection and improved precision systems are required. The LMP8646 is available in a 6-pin SOT package and can operate at temperature range of −40°C to 125°C.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LMP8646 Precision Current Limiter datasheet (Rev. B) | PDF | HTML | 2014年 12月 8日 |
| Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 2022年 1月 25日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application brief | Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers | 2017年 2月 28日 | ||
| Application note | AN-2219 Precision Current Limiting with the LMP8646 and LP38501 (Rev. A) | 2013年 4月 24日 | ||
| Application note | AN-2200 Precision Current Limiting with the LMP8646 and LMZ12003 (Rev. A) | 2013年 4月 23日 | ||
| Application note | AN-2218 Precision Current Limiting with the LMP8646 and LM3102 (Rev. A) | 2013年 4月 23日 | ||
| User guide | LMP8646EB User's Guide | 2012年 2月 13日 |
設計與開發
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
LMP8646EB — LMP8646 評估板
The LMP8646 Evaluation Board (LMP8646EB) is designed to ease evaluation and design-in of TI's LMP8646, a Precision Current Limiter. The LMP8646 is used to detect small differential voltages across a sense resistor in the presence of high input common mode voltages. On board with the current (...)
TPS63802HDKEVM — TPS63802HDKEVM - 硬體開發套件
TPS63802HDKEVM 是一款通用開發工具,旨在協助使用者輕鬆快速地評估和測試最常見的降壓升壓轉換器使用案例。使用案例包括備用電源、輸入電流限制、LED 驅動器、數位電壓調整、旁路模式與精密啟用。使用者可透過變更跨接器和 DIP 開關,輕鬆地在不同的使用案例間進行選擇。不需焊接。
TPS63802HDKEVM 使用 TPS63802,輸出電壓設定為 3.3V。EVM 的輸入電壓運作範圍為 1.8V 至 5.5V。在降壓模式及升壓模式中,輸出電流可高達 2A。
CIRCUIT060035 — 具有窗型比較器電路的雙向電流感測
CIRCUIT060037 — 精密過電流閂鎖電路
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前,建立完整的終端設備設計和解決方案原型,進而縮短上市時間並降低開發成本。
在 PSpice for TI 設計與模擬工具中,您可以搜尋 TI (...)
TINA-TI — 基於 SPICE 的類比模擬程式
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | 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