●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 Ѿ40°C to 125°C.
● 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
Part 3D Model
