MAX4073F, MAX4073H, MAX4073T

Low-Cost, SC70, Voltage-Output, High-Side Current-Sense Amplifier


Please check latest availability status for a specific part variant.

Description

The MAX4073 low-cost, high-side current-sense amplifier features a voltage output that eliminates the need for gain-setting resistors making it ideal for cell phones, notebook computers, PDAs, and other systems where current monitoring is crucial. High-side current monitoring does not interfere with the ground path of the battery charger making the MAX4073 particularly useful in battery-powered systems. The input common-mode range of +2V to +28V is independent of the supply voltage. The MAX4073's wide 1.8MHz bandwidth makes it suitable for use inside battery-charger control loops.

The combination of three gain versions and a selectable external-sense resistor sets the full-scale current reading. The MAX4073 offers a high level of integration, resulting in a simple and compact current-sense solution.

The MAX4073 operates from a +3V to +28V single supply and draws only 0.5mA of supply current. This device is specified over the automotive operating temperature range (-40°C to +125°C) and is available in a space-saving 5-pin SC70 package (half the size of the SOT23).

For a similar device in a 6-pin SOT23 with a wider common-mode voltage range (0 to +28V), see the MAX4173 data sheet.
MAX4073F, MAX4073H, MAX4073T: Typical Operating Circuit MAX4073F, MAX4073H, MAX4073T: Typical Operating Circuit Enlarge+

Key Features

  • Low-Cost, Compact, Current-Sense Solution
  • Three Gain Versions Available
    • +20V/V (MAX4073T)
    • +50V/V (MAX4073F)
    • +100V/V (MAX4073H)
  • ±1.0% Full-Scale Accuracy
  • 500µA Supply Current
  • Wide 1.8MHz Bandwidth
  • +3V to +28V Operating Supply
  • Wide +2V to +28V Common-Mode Range Independent of Supply Voltage
  • Automotive Temperature Range (-40°C to +125°C)
  • Available in Space-Saving 5-Pin SC70 Package

See parametric specs for Current Sense Amplifiers (52)


Part NumberOutput FormatCMVR
(V)
CMVR
(V)
VCC
(V)
VCC
(V)
ICC
(µA)
Bi-Dir. Curr. SenseVSENSE_FS
(mV)
GainGain Accuracy @25°C
(%)
BW
(kHz)
ComparatorsOper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxminmaxtyprecomm.max@ -3dBSee Notes
MAX4073 Voltage228328500No100
100 V/V
20 V/V
50 V/V
4.5
1600
1700
1800
0-40 to +125
SC70/5
SOT23/6
$0.92 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX4073EVKIT: Evaluation Kit for the MAX4073
Product Reliability Reports: MAX4073F.pdf  MAX4073H.pdf  MAX4073T.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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