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TI INA381A2IDGSRRoHS

Manufacturer
TI
MPN
INA381A2IDGSR
LCSC Part #
C1849464
Packaging
VSSOP-10
Customer #
Key Attributes
26-V, High-Speed, Current Sense Amplifier With Integrated Comparator
Datasheetpdf iconTI INA381A2IDGSR
In-Stock: 139
139 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 0.8286$ 0.83
10+$ 0.7087$ 7.09
30+$ 0.6227$ 18.68
100+$ 0.553$ 55.30
500+$ 0.5303$ 265.15
1,000+$ 0.5173$ 517.30
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Current Regulation/Management
ManufacturerTI
PackagingVSSOP-10
FeaturesBuilt-in comparator;High-side detection;Low-side detection;Zero drift / auto-zero;Programmable threshold alarm
Vcm - Common Mode Voltage-200mV~26V
Output Current-
Input Offset Current(Ios)50nA
Slew Rate2V/us
Input Voltage (Vin)2.7V~5.5V
Operating Temperature-40℃~+125℃
Input Offset Voltage Drift(Vos TC)1uV/℃
Gain50V/V
Common Mode Rejection Ratio(CMRR)100dB
Dual Supply-
Quiescent Current250uA
Vos - Input Offset Voltage500uV
Ib - Input Bias Current-
Number of Channels-
Differential Voltage±26V
Noise density(eN)-
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The INA381 includes both a 26-V common-mode, current-sensing amplifier and a high-speed comparator. This device detects overcurrent conditions by measuring the voltage developed across a current-shunt resistor and comparing that voltage to a user-defined threshold limit set by the comparator reference pin. The current-shunt monitor can measure differential voltage signals on commonmode voltages that vary from -0.2 V up to 26 V, independent of the supply voltage. The open-drain alert output can be configured to operate in two modes: transparent or latched. In transparent mode, the output status follows the input state. In latched mode, the alert output is cleared only when the latch is reset. The standalone comparator large-signal alert response time is less than 2 μs, allowing for quick detection of overcurrent events. The total system overcurrent protection response time provided by the INA381 is less than 10 μs. This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 350 μA. The device is specified over an operating temperature range of -40°C to +125°C, and is available in 8-pin WSON and 10-pin VSSOP packages.

Features

AI Translation
  • Common-mode input range: -0.2 V to +26 V
  • High accuracy amplifier:
    • Offset voltage at TA = 25°C – 500 μV (maximum) at VCM = 12 V – 150 μV (maximum) at VCM = 0 V
    • Offset voltage drift: 1 μV/°C (maximum)
    • Gain error: 1% (maximum) at 25°C
    • Gain error drift: 20 ppm/°C (maximum)
  • Available amplifier gains:
    • INA381A1: 20 V/V
    • INA381A2: 50 V/V
    • INA381A3: 100 V/V
    • INA381A4: 200 V/V
  • Open-drain comparator:
    • Hysteresis: 50 mV
    • Propagation delay: 400 ns (typ)
    • Alert threshold set through external reference voltage
    • Supports transparent and latching modes
  • Packages: VSSOP-10 and WSON-8

Applications

AI Translation
  • Merchant network and server PSU
  • Merchant DC/DC
  • DC-input BLDC motor drive
  • Cordless power tool
  • Headsets, headphones and earbuds