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MAX34406

Quad Current-Sense Amplifier with Overcurrent Threshold Comparators

Accurate Current Measurement with Automatic Overcurrent Shutdown for Four Supply Rails

Data Sheet

Please check latest availability status for a specific part variant.

Overview

Description

The MAX34406 is a quad, high-side, unidirectional, current-sense amplifier that offers precision accuracy. It provides analog outputs for each of the four amplifiers that can be routed to an external ADC, and contains four overcurrent comparators with a fixed 1.0V threshold. All four comparators are logically ORed, and the result can be delayed/filtered with an external capacitor before it is fed to a latched common shutdown open-drain output pin.

Key Features

Four Precision Current-Sense Amplifiers
Fixed Gains of 25V/V, 50V/V, 100V/V, and 200V/V
Less Than ±600µV of Input Offset
Less Than ±0.6% of Gain Error (T/F/H) or ±0.8% of Gain Error (W)
Wide 2.0V to 28V Common Mode Range
Analog Voltage Outputs for Each Amplifier
Independent Overcurrent Comparators with Fixed 1.0V Threshold
Low Power Consumption
-40°C to +85°C Temperature Range
Small 24-Pin TQFN (4mm x 4mm) Package

Applications/Uses

Base Stations
Industrial Controls
Network Switches/Routers
Servers
Smart Grid Network Systems

Parametric Specs

Part Number

Output Format

CMVR
(V)

V_CC
(V)

I_CC
(µA)

Bi-Dir. Curr. Sense

V_{SENSE_FS}
(mV)

V_OS @25°C
(µV)

Gain

Gain Accuracy @25°C
(%)

BW
(kHz)

Comp-
arators

Reference

Oper. Temp.
(°C)

Package/Pins

Budgetary
Price

min

max

min

max

typ

recomm.

max

@ -3dB

See Notes

MAX34406

Voltage

2.7

5.5

100

600

25 V/V

50 V/V

100 V/V

200 V/V

0.6

125

Bandgap

-40 to +85

TQFN/24

$1.62 @1k

See All Current Sense Amplifiers (53)

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.

Design Resources

MAX34406EVKIT: Evaluation Kit for the MAX34406

Quality and Environmental Data

Product Reliability Reports: MAX34406.pdf
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

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Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

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.

Quality Management System >
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