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

Inventory: 3,068

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Packaging information

Package | Pins SOT-23-THN (DDC) | 6
Operating temperature range (℃) Q (-40 to 125)
Package qty | Carrier: 250 | SMALL T&R
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Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • 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 12V
    • 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 95dB
    • Temperature Range −40°C to 125°C
    • 6-Pin SOTPackage

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The LMP8646 is a precision current limiter used to improve the current limit accuracy ofany 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 asingle external resistor, RG, providing a high level of flexibility andaccuracy up to 2%. The adjustable bandwidth, which allows the device to be used with a variety ofapplications, is configurable with a single external capacitor in parallel withRG. In addition, the output is buffered in order to provide a low outputimpedance.

The LMP8646 is an ideal choice for industrial, automotive, telecommunications, andconsumer applications where circuit protection and improved precision systems are required. TheLMP8646 is available in a 6-pin SOT package and can operate at temperature range of −40°C to125°C.

Qty Price
1-99 $2.35
100-249 $2.06
250-999 $1.44
1,000+ $1.16

Alternative carriers

Part number LMP8646MKX/NOPB
Package qty | Carrier 3,000 | LARGE T&R
Custom reel may be available
Inventory 13,958
Qty | Price (USD) 1ku | $1.01
Part number LMP8646MK/NOPB
Package qty | Carrier 1,000 | LARGE T&R
Custom reel may be available
Inventory 3,656
Qty | Price (USD) 1ku | $1.01