Maxim MAX9938FEUK+

Mfr. Part

MAX9938FEUK+

Manufacturer

Analog Devices / Maxim Integrated. Y-IC is a quality distributor of Analog Devices / Maxim Integrated. We focus on genuine supply, fast delivery, and dependable service.

Detailed Description

High-side current-sense amplifier from the MAX9938 family. Fixed-gain variant in an ultra-small surface-mount package. Designed to measure the voltage across a shunt resistor on the high side of the supply and output a proportional analog voltage for easy current monitoring. Low offset and low drift for accurate measurements over temperature. Simple, robust, and ideal for space-constrained designs in power monitoring and control.

Key Features

High-side current sensing for safe, simple current measurement

Fixed-gain version for predictable scaling (F variant)

Tiny footprint for dense boards

Low input offset for accurate small current measurement

Wide input common-mode range to handle typical system rails

Low quiescent current for low-power designs

Rail-to-rail output for maximum dynamic range

Simple interface with standard ADCs or comparators

RoHS compliant and lead-free

Key Advantages

Accurate current monitoring without disturbing the load path

Minimal board space and easy layout near the shunt

Stable, fixed gain simplifies calibration and firmware

Low power overhead extends battery life in portable devices

Robust across temperature and supply variations

Works across a broad range of system voltages

Fast design-in with straightforward pinout and reference designs

Packaging

Package type EUK code in the MAX9938 family, case code 1057

Form factor ultra-small surface-mount, 6-pin footprint

Mounting type SMD, tape-and-reel for automated assembly

Material industry-standard mold compound and leadframe, lead-free finish

Typical size ultra-compact micro-DFN style footprint suitable for dense layouts

Pin configuration typical functions include IN+, IN-, OUT, VCC, GND, and an enable or logic control pin depending on sub-variant

Thermal characteristics optimized for low-power operation; ensure adequate copper around the device and shunt for heat spreading

Electrical properties high-side sense architecture, fixed gain, wide supply and input common-mode ranges; ESD protection to industry standards

For exact dimensions, land pattern, and pin mapping, refer to the datasheet linked on our product page

Lifecycle

Status active and widely used; not near discontinuation based on current manufacturer guidance

Equivalent or alternative models

- Analog Devices alternatives AD8210, AD8418, LTC6101, LTC6102 (high-side current sense families)

- Texas Instruments alternatives INA199, INA190, INA180 (fixed-gain high-side current-sense amplifiers)

- Microchip alternatives MCP6C02, MCP6C04 (current-sense amplifiers)

- Other Maxim/ADI family options MAX9936, MAX9937, MAX9939 depending on gain and bidirectional requirements

If you need drop-in or pin-compatible equivalents, or if your application has special requirements, contact our sales team via the Y-IC website for detailed cross-references and guidance

Key Application Areas

DC-DC converter current monitoring and protection

Battery pack and charger current measurement

Portable devices and IoT power management

LED driver current feedback

Server, telecom, and industrial power rails

Motor drivers, pumps, and fans current control

Overcurrent protection and system health monitoring

Energy measurement subsystems and smart meters

Datasheet

Y-IC provides the most authoritative datasheet for MAX9938FEUK+ on our product page. Download it now to get full specifications, pinouts, layout guidelines, and performance curves.

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