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Analog Devices Inc./Maxim Integrated MAX4372FEBT+T
- Part No.:
- MAX4372FEBT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-WFBGA, CSPBGA
- Datasheet:
-
MAX4372FEBT+T.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 5UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,087
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Product details
Overview
MAX4372FEBT+T from Maxim Integrated is a precision high-side current-sense amplifier with 50V/V fixed gain, operating from 2.7V to 28V supply, consuming only 30μA quiescent current, featuring 0.3mV input offset voltage and 0.18% full-scale accuracy in a 3×2 UCSP (1mm × 1.5mm) package - ideal for battery current monitoring in portable electronics and smart chargers.
For engineers reviewing the MAX4372FEBT+T datasheet, MAX4372FEBT+T pinout, MAX4372FEBT+T application, or MAX4372FEBT+T equivalent, key selection criteria include its 0–28V common-mode input range independent of supply voltage, low 1.5Ω output impedance, ±1.9mV max input offset over temperature, and compatibility with deep-discharge battery sensing down to 0V.
Technical Context
The MAX4372FEBT+T implements a high-precision current mirror-based architecture that converts differential sense voltage (VRS+ – VRS−) into a proportional voltage output without external gain-setting resistors. Its input stage operates with rail-to-rail common-mode capability from 0V to 28V, decoupled from VCC, enabling accurate sensing during battery deep discharge.
It delivers 50V/V gain with ±5.5% gain accuracy over –40°C to +85°C, supports capacitive loads up to 1000pF without oscillation, and achieves 200kHz –3dB bandwidth at 50V/V gain with 10pF load - optimized for stable, low-power current feedback in compact DC/DC and battery management systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50V/V - fixed internal gain enables direct voltage output proportional to sense resistor voltage drop, eliminating external gain components. |
| Supply Voltage Range | 2.7V to 28V - supports wide-input battery systems including multi-cell Li-ion packs and industrial 24V rails. |
| Input Common-Mode Range | 0V to 28V, independent of VCC - allows sensing on battery anode side even at near-zero cell voltage without ground path disruption. |
| Full-Scale Accuracy | ±0.18% at +25°C - ensures high-precision current measurement critical for battery fuel gauging and protection algorithms. |
| Input Offset Voltage | ±1.9mV max over –40°C to +85°C - minimizes error in low-current detection (e.g., standby leakage monitoring). |
| Quiescent Current | 30μA typical - enables always-on current monitoring in ultra-low-power portable devices without compromising battery life. |
| Output Impedance | 1.5Ω - drives moderate capacitive loads directly, simplifying interface to ADCs or comparator inputs without buffering. |
Pinout & Package
MAX4372FEBT+T is housed in a lead(Pb)-free, RoHS-compliant 3×2 UCSP package (1mm × 1.5mm, 0.5mm pitch), designed for ultra-dense PCB layouts in space-constrained portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RS+ | High-side sense resistor anode connection | Connects to battery/anode side of external sense resistor; accepts 0–28V common-mode voltage regardless of VCC. |
| RS− | High-side sense resistor cathode connection | Connects to load side of sense resistor; differential input with ±0.3V max rating defines measurable current range. |
| VCC | Positive supply input | Power supply input (2.7V–28V); requires ≥0.1μF local decoupling capacitor for stability and noise immunity. |
| GND | Analog ground reference | Return path for internal circuitry and output stage; must be connected to system analog ground for accuracy. |
| OUT | Voltage output terminal | Provides amplified output VOUT = 50 × (VRS+ – VRS−); clamped to ≤12V, compatible with 3.3V/5V ADC inputs via scaling if needed. |
Key Features
| Feature | Design Value |
|---|---|
| Zero external gain components | Internal 50V/V amplifier eliminates need for external resistors, reducing BOM count and layout area in high-density designs. |
| Deep-discharge compatible sensing | 0V minimum common-mode input enables accurate current measurement even when battery voltage drops below 1V per cell. |
| Micropower operation | 30μA supply current allows continuous current monitoring in always-on battery-powered systems without significant runtime penalty. |
| High CMR and PSR | 85dB common-mode rejection and 85dB power-supply rejection ensure stable output under noisy supply or high-impedance sense node conditions. |
| Capacitive-load tolerant | Stable with up to 1000pF load capacitance - supports direct connection to long traces or ADC input capacitors without added isolation. |
Applications
| Smart-Battery Chargers | Notebook Power Management |
|---|---|
|
Use Scenario: Real-time charge/discharge current monitoring in lithium-ion battery packs with integrated fuel gauging ICs. IC Role / Device Role / Timing Role: High-side current-sense amplifier providing isolated, ground-referenced voltage output proportional to pack current. Use Value: Enables precise coulomb counting and state-of-charge estimation without disrupting charger ground return path or introducing measurement offset drift. |
Use Scenario: System-level current monitoring for CPU/GPU VRM output rails and battery charging circuits in thin-and-light notebooks. IC Role / Device Role / Timing Role: Precision current sensor feeding analog inputs of system power manager or embedded controller (EC). Use Value: Delivers 0.18% full-scale accuracy and 30μA quiescent current to support dynamic power budgeting and thermal throttling decisions. |
| Portable Medical Devices | Industrial IoT Sensor Nodes |
|
Use Scenario: Battery current supervision in handheld diagnostic tools requiring FDA-grade accuracy and low-power operation. IC Role / Device Role / Timing Role: High-side monitor interfacing with low-voltage SAR ADCs to detect abnormal current draw indicating fault or calibration drift. Use Value: 0.3mV input offset and ±1.9mV max over temperature ensure reliable sub-mA detection across clinical operating environments. |
Use Scenario: Long-life battery-powered edge nodes performing periodic sensor readouts and wireless transmission. IC Role / Device Role / Timing Role: Micropower current monitor enabling duty-cycled current profiling to validate sleep-mode leakage and predict battery end-of-life. Use Value: 30μA supply current and UCSP footprint allow integration into coin-cell–powered modules where board space and energy budget are tightly constrained. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4372FEUK+T | SOT23-5 package (2.9mm × 1.6mm), same 50V/V gain and electrical specs; higher thermal resistance (3.9mW/°C derating vs. 3.4mW/°C for UCSP). | Better suited for prototyping or manual assembly due to larger footprint; less optimal for ultra-thin or flex PCBs. | Select MAX4372FEUK+T when hand-soldering or thermal dissipation >273mW is required; otherwise prefer UCSP for miniaturization. |
| INA219AIDR | I²C-output digital current/voltage/power monitor with internal 12-bit ADC; 26V max common-mode, 0.1% gain error, but 1mA supply current. | Replaces analog signal chain with digital interface; requires microcontroller I²C support and firmware integration. | Choose INA219AIDR when digital bus communication and power calculation are needed; MAX4372FEBT+T remains superior for analog-loop feedback or ultra-low-power wake-up triggers. |
Compared with MAX4372FEUK+T, the MAX4372FEBT+T offers 30% smaller footprint and lower thermal resistance for high-density layouts; versus INA219AIDR, it provides analog output with 33× lower quiescent current and no firmware dependency - critical for autonomous, low-latency current control loops.
Availability
MAX4372FEBT+T is available at Aetrix Electronics and suitable for smart-battery chargers, notebook power management, portable medical devices, industrial IoT sensor nodes, and precision current-source designs requiring stable component supply across extended production lifecycles.
Supply support for MAX4372FEBT+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and consumer applications.
The MAX4372 family was designed specifically for high-accuracy, micropower, high-side current sensing in battery-critical systems - emphasizing zero-ground-interference operation, wide common-mode range, and minimal external component count.
FAQ
What is the maximum common-mode voltage supported by the MAX4372FEBT+T?
The MAX4372FEBT+T supports a 0V to 28V input common-mode range independent of supply voltage - meaning it can accurately sense current even when the RS+ node is at 0V (e.g., deeply discharged battery) or up to 28V, while VCC may be as low as 2.7V. This is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.
Does the MAX4372FEBT+T require external gain-setting resistors?
No, the MAX4372FEBT+T does not require external gain-setting resistors. It integrates a precision 50V/V gain amplifier internally - the "F" suffix denotes the 50V/V variant. Output voltage is directly VOUT = 50 × (VRS+ – VRS−), eliminating component count, layout area, and resistor tolerance errors associated with discrete gain networks.
What is the package type and dimensions of the MAX4372FEBT+T?
The MAX4372FEBT+T uses a 3×2 UCSP (Ultra Compact Silicon Package) measuring 1.0mm × 1.5mm with 0.5mm bump pitch. It is a wafer-level chip-scale package with solder bumps on the bottom surface, documented under package code B6+2 and outline number 21-0097 in Maxim's package library.
Can the MAX4372FEBT+T operate from a 3.3V supply?
Yes, the MAX4372FEBT+T operates from 2.7V to 28V, so a 3.3V supply is fully supported. At 3.3V, the output voltage swing is limited to approximately 0V to (VCC – 0.25V) = 3.05V, which remains compatible with most 3.3V ADCs. Supply current remains ~30μA, and common-mode range stays 0–28V regardless of VCC.
How does the MAX4372FEBT+T handle overvoltage on the RS+ and RS− pins?
The MAX4372FEBT+T specifies absolute maximum ratings of –0.3V to +30V on RS+, RS−, and VCC relative to GND. Differential input voltage is limited to ±0.3V. Exceeding these violates Absolute Maximum Ratings and risks permanent damage. External clamping (e.g., TVS diodes) is recommended in systems prone to transients or hot-plug events.
MAX4372FEBT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-WFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 275 kHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 30µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 28 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-UCSP (1x1.52)
MAX4372FEBT+T FAQ
1.How can I place an order for MAX4372FEBT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4372FEBT+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4372FEBT+T reliable?
The price and inventory of MAX4372FEBT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4372FEBT+T is usually 5 days.
3.What payment methods are accepted for MAX4372FEBT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4372FEBT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4372FEBT+T?
MAX4372FEBT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4372FEBT+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4372FEBT+T?
For technical support, including MAX4372FEBT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4372FEBT+T requirements.
6.How does Aetrix verify that MAX4372FEBT+T is sourced from the original manufacturer or authorized distributors?
All MAX4372FEBT+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4372FEBT+T meets industry standards.
7.What is the process for return or replacement of MAX4372FEBT+T?
All MAX4372FEBT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4372FEBT+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4372FEBT+T part is unused and in its original packaging.
Return procedure for MAX4372FEBT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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