MAX34406 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

MFG CO.

MAX34406

Quad Current-Sense Amplifier with Overcurrent Threshold Comparators

Maxim Integrated 

MAX34406

Quad Current-Sense Amplifier

with Overcurrent Threshold Comparators

RIN x IBIAS contributes to the input voltage offset. IBIAS

is typically 0.2FA.

Placing RIN at the INx- input voltage does not affect the

gain error of the device because the gain is given by the

ratio between ROUTx and R1 at INx+.

Bidirectional Application

Some systems can require a precise bidirectional cur-

rent-sense amplifier to accurately monitor currents.

ILOAD

RSENSE

Measurement of the two separate outputs with respect

to GND yields an accurate measure of the bidirectional

currents (Figure 3).

Choosing the Delay Capacitor

The SHTDN output asserts upon overcurrent detection

on any of the 4 channels. OC1 to OC4 are logically ORed

together; SHTDN latches the output after some delay.

SHTDN latch delay is determined by the following equation:

tDLY = CCDLY × (VDD ÷ 10µA)

Example CCDLY and tDLY pairs are given in the Electrical

Characteristics table.

IN1+

GND

OUT1

IN1- IN2+ IN2-

MAX34406

OUT2

VDD = 3.3V

µC

ADC

INPUTS

Figure 3. Bidirectional Application

Ordering Information

PART

MAX34406TETG+*

MAX34406TETG+T*

MAX34406FETG+*

MAX34406FETG+T*

MAX34406HETG+

MAX34406HETG+T

MAX34406WETG+*

MAX34406WETG+T*

GAIN (V/V)

25

25

50

50

100

100

200

200

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

*Future product—contact factory for availability.

**EP = Exposed pad.

TEMP RANGE

-40NC to +85NC

-40NC to +85NC

-40NC to +85NC

-40NC to +85NC

-40NC to +85NC

-40NC to +85NC

-40NC to +85NC

-40NC to +85NC

PIN-PACKAGE

24 TQFN-EP**

24 TQFN-EP**

24 TQFN-EP**

24 TQFN-EP**

24 TQFN-EP**

24 TQFN-EP**

24 TQFN-EP**

24 TQFN-EP**

Package Information

For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or

“-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains

to the package regardless of RoHS status.

PACKAGE TYPE

24 TQFN-EP

PACKAGE CODE

T2444+4

OUTLINE NO.

21-0139

LAND PATTERN NO.

90-0022

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