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MAX34408

Part Number	MAX34408
Manufacturer	Maxim Integrated
Description	SMBus Dual/Quad Current Monitor
Published	Mar 27, 2020
Detailed Description	MAX34408/MAX34409 EVALUATION KIT AVAILABLE SMBus Dual/Quad Current Monitor General Description The MAX34408/MAX34409 a...
Datasheet	MAX34408 PDF File

Overview

MAX34408/MAX34409 EVALUATION KIT AVAILABLE SMBus Dual/Quad Current Monitor General Description The MAX34408/MAX34409 are two- and four-channel current monitors that are configured and monitored with a standard I2C/SMBus serial interface.
Each unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage.
The devices automatically sequence through two or four channels and collect the current-sense samples and average them to reduce the effect of impulse noise.
The raw ADC samples are compared to user-programmable digital thresholds to indicate overcurrent conditions.
Overcurrent conditions trigger a hardware output to provide an immediate indication to shut down any necessary external circuitry.
Applications ● Network Switches and Routers ● Base Stations ● Servers ● Smart Grid Network Systems ● Industrial Controls Ordering Information appears at end of data sheet.
Benefits and Features ● Enables Accurate Current Consumption Measurement on Up to Four Rails with Digital Serial Readout • Low 12.
25mV Full-Scale Current-Sense Voltage • Automatic Round Robin Sequencing to Sample Each Current-Sense Input • Selectable Averaging to Improve Current-Sense Accuracy • Programmable Digital Overcurrent Thresholds with Delay Function • I2C/SMBus Interface with Bus Timeout • Register Access to Real-Time Current Measurements ● Compatible on a Wide Range of Voltage Rails • Wide 2.
5V to 13.
2V Common-Mode Range ● Automatic System Shutdown on Overcurrent Condition • Shutdown Output Provides Immediate Hardware Indication of Overcurrent For related parts and recommended products to use with this part, refer to www.
maximintegrated.
com/MAX34408.
related.
Typical Application Circuit and Block Diagram MAX34408/MAX34409 CURRENT FLOW OPTIONAL FILTER NETWORK RSENSE 100Ω 100Ω 1µF 1µF NOT PRESENT ON MAX34408 AUTOMATIC SEQUENCING 2 OR IN+ 4 AMPLIFIER 4 AMPLIFIER 3 AMPLIFIER 2 AMPLIFIER 1 2 OR IN- 4 CURRENTSENSE AMPLIFIER MUX VRE...

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