LMP8646
Hochgeschwindigkeits-Strombegrenzer mit konfigurierbarer Verstärkung und Bandbreite, -2 bis 76 V
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.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | LMP8646 Precision Current Limiter datasheet (Rev. B) | PDF | HTML | 08 Dez 2014 |
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 25 Jan 2022 | |
Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
Application brief | Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers | 28 Feb 2017 | ||
Application note | AN-2219 Precision Current Limiting with the LMP8646 and LP38501 (Rev. A) | 24 Apr 2013 | ||
Application note | AN-2200 Precision Current Limiting with the LMP8646 and LMZ12003 (Rev. A) | 23 Apr 2013 | ||
Application note | AN-2218 Precision Current Limiting with the LMP8646 and LM3102 (Rev. A) | 23 Apr 2013 | ||
User guide | LMP8646EB User's Guide | 13 Feb 2012 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
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Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
SOT-23-THN (DDC) | 6 | Ultra Librarian |
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