LMP8646 Series

-2 to 76V, configurable gain and bandwidth, high-speed current limiter

Catalog

-2 to 76V, configurable gain and bandwidth, high-speed current limiter

Part	Current - Input Bias	Number of Circuits	Mounting Type	Current - Supply	Voltage - Supply Span (Max) [Max]	Voltage - Input Offset	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply Span (Min) [Min]	Amplifier Type	Supplier Device Package	Current - Output / Channel	Output Type	Utilized IC / Part	Board Type	Channels per IC	Current - Supply (Main IC)	Supplied Contents	Voltage - Supply, Single/Dual (±) [Max]	Voltage - Supply, Single/Dual (±) [Min]
Texas Instruments LMP8646MKE/NOPB	12.5 µA	1	Surface Mount	2.1 mA	12 V	1 mV	SOT-23-6 Thin TSOT-23-6	125 °C	-40 °C	2.7 V	Current Sense	SOT-23-THIN	5 mA
Texas Instruments LMP8646MK/NOPB	12.5 µA	1	Surface Mount	2.1 mA	12 V	1 mV	SOT-23-6 Thin TSOT-23-6	125 °C	-40 °C	2.7 V	Current Sense	SOT-23-THIN	5 mA
Texas Instruments LMP8646EB/NOPB											Current Sense		5 mA	Single-Ended	LMP8646	Fully Populated	1 - Single	2.1 mA	Board(s)	12 V	3.3 V

Catalog

-2 to 76V, configurable gain and bandwidth, high-speed current limiter

Key Features

• Provides Circuit Protection and Current LimitingSingle Supply Operation–2-V to 76-V Common-Mode Voltage RangeVariable Gain Set by External ResistorAdjustable Bandwidth Set by External CapacitorBuffered Output3% Output Accuracy Achievable at VSENSE= 100 mVKey Specifications:Supply Voltage Range 2.7 V to 12 VOutput Current (Source) 0 to 5 mAGain Accuracy 2.0% (max)Transconductance 200 µA/VOffset ±1 mV (Maximum)Quiescent Current 380 µAInput Bias 12 µA (Typical)PSRR 85 dBCMRR 95 dBTemperature Range −40°C to 125°C6-Pin SOT PackageProvides Circuit Protection and Current LimitingSingle Supply Operation–2-V to 76-V Common-Mode Voltage RangeVariable Gain Set by External ResistorAdjustable Bandwidth Set by External CapacitorBuffered Output3% Output Accuracy Achievable at VSENSE= 100 mVKey Specifications:Supply Voltage Range 2.7 V to 12 VOutput Current (Source) 0 to 5 mAGain Accuracy 2.0% (max)Transconductance 200 µA/VOffset ±1 mV (Maximum)Quiescent Current 380 µAInput Bias 12 µA (Typical)PSRR 85 dBCMRR 95 dBTemperature Range −40°C to 125°C6-Pin SOT Package

Description

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. 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.