General Description

The MAX44284 is a high-side, current-sense amplifier

that operates with a 1.7V to 5.5V single supply and is

optimized for very low power operation with only 21μA of

quiescent current.

The MAX44284 offers precision accuracy specifications

of 2μV VOS and gain error of 0.05%. The device features

an input common-mode voltage range from -0.1V to

+36V. This current-sense amplifier has a voltage output

and is offered in four different gain versions.

The MAX44284 is offered in small 6-bump, 0.4mm-pitch

WLP (1.3mm x 0.9mm) and 6-pin SOT23 packages and is

specified for operation over the -40°C to +125°C automotive

temperature range.

Applications

● Smartphones and Tablets

● Notebook Computers

● DC-DC Current Sensing in Power Management

● Portable-/Battery-Powered Systems

● Medical Pulse Oximeters and Infusion Pumps

● Base Stations

Benefits and Features

● Supports Use of Small Current-Sense Resistors to

Improve Power-Supply Conversion Efficiency and

Measurement Accuracy

• Input Bias Current of 80nA (max)

• Very Low 2μV Input Offset Voltage (MAX44284F/H)

• Extremely Low 50nV/°C Input Offset Tempco

Coefficient

• -0.1V to +36V Wide Input Common-Mode Range

• Low 0.05% Gain Error

● Extends Battery Life

• Low Supply Current of 21μA

• 1.7V to 5.5V Single Supply

• Shutdown Input (Independent of VDD)

● Four Fixed Gain Options Simplify Design

• 50V/V – MAX44284F

• 100V/V – MAX44284H

• 200V/V – MAX44284W

• 500V/V – MAX44284E