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Analog Devices Inc./Maxim Integrated MAX4374FEUB
- Part No.:
- MAX4374FEUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4374FEUB.pdf
- Description:
- IC AMP COMP REF 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,919
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Product details
Overview
MAX4374FEUB from Maxim Integrated is a micropower, high-side current-sense amplifier with integrated comparator and 600mV bandgap reference, designed for overcurrent monitoring in battery-powered systems. It features +50V/V gain, 0V to +28V input common-mode range independent of supply, 1mV max input offset voltage, and latching comparator output. Used in notebook computers and smart battery chargers for reliable fault detection without ground-path interference.
For engineers reviewing the MAX4374FEUB datasheet, MAX4374FEUB pinout, MAX4374FEUB application, or MAX4374FEUB equivalent, key selection criteria include its +50V/V fixed gain, 10-pin µMAX package, -40°C to +85°C operating range, 50µA supply current, and dual-comparator capability for window-detection functions.
Technical Context
The MAX4374FEUB implements a high-accuracy current-sense amplifier with rail-to-rail common-mode input (0V to +28V), enabling deep-discharge battery monitoring. Its internal 600mV reference feeds two comparators: CIN1 controls the latched output (COUT1), while CIN2 drives the unlatched second comparator (COUT2) for window detection.
It operates from a single +2.7V to +28V supply and consumes only 50µA. The +50V/V gain version delivers full-scale output at 100mV sense voltage, with total output error ≤±2% across temperature and supply variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +50V/V - sets output voltage = 50 × (RS+ − RS−); enables precise scaling for 100mV full-scale sense voltage |
| Input Offset Voltage | ≤1mV - ensures accurate low-current detection down to ~2mA with 50mΩ sense resistor |
| Common-Mode Range | 0V to +28V, supply-independent - supports monitoring of deeply discharged batteries and high-side rails exceeding VCC |
| Supply Current | 50µA - extends battery life in portable systems; stable across 2.7V–28V supply range |
| Operating Temperature | -40°C to +85°C - qualified for industrial and automotive-adjacent embedded power management |
| Comparator Threshold | 600mV ±10mV - fixed internal reference enables consistent overcurrent trip point regardless of supply variation |
| Output Type | Open-drain, latched (COUT1) and unlatched (COUT2) - allows flexible fault flagging and window-detection logic without external latch circuitry |
Pinout & Package
MAX4374FEUB is housed in a 10-pin µMAX® package (package code U10+2), RoHS-compliant, with 0.5mm pitch and exposed pad for thermal performance. Pin 1 is RS+, pin 10 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RS+ | High-side sense input (+) | Connects to load side of external sense resistor; accepts up to +28V common-mode voltage |
| 2 RS- | High-side sense input (−) | Connects to power source side of sense resistor; differential input defines VSENSE |
| 3 OUT | Current-sense amplifier output | Voltage output = 50 × (RS+ − RS−); no external gain resistors required |
| 4 CIN1 | Comparator 1 positive input | Compares amplified sense signal against 600mV reference; triggers latched COUT1 |
| 5 CIN2 | Comparator 2 input | Configurable as high/low threshold input for window detection (MAX4374/MAX4375 only) |
| 6 COUT1 | Latched comparator output | Open-drain, latched flag - remains asserted after overcurrent until RESET pulse |
| 7 COUT2 | Unlatched comparator output | Open-drain, real-time response - used with COUT1 for window detection logic |
| 8 RESET | Latch control input | Pulse low ≥1.5µs to reset COUT1; hold low for transparent comparator operation |
| 9 VCC | Power supply input | Single +2.7V to +28V supply; bypass with 0.1µF ceramic capacitor to GND |
| 10 GND | Analog/digital ground | Substrate connected to GND; common return for all signals and supply |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bandgap reference | 600mV ±10mV accuracy - eliminates need for external reference and reduces BOM count |
| Latching comparator output | Prevents oscillation during overcurrent events - avoids repeated MOSFET switching and system instability |
| Dual-comparator architecture | Enables true window detection using CIN1/CIN2 and COUT1/COUT2 - no external comparators needed |
| Micropower operation | 50µA supply current - suitable for always-on battery monitoring in sleep modes |
| Supply-independent common-mode range | 0V to +28V operation even at VCC = 2.7V - ensures functionality during battery deep discharge |
Applications
| Smart Battery Protection | Notebook Power Management |
|---|---|
Use Scenario: Monitoring battery pack current during charge/discharge cycles to prevent overcurrent damage. IC Role / Device Role / Timing Role: High-side current-sense amplifier with latched comparator provides immediate, non-oscillating shutdown signal upon fault. Use Value: Eliminates ground-path disruption and enables accurate sensing down to 0V battery voltage, extending usable battery capacity. | Use Scenario: Real-time load current monitoring on CPU/GPU VRM rails to trigger thermal throttling or graceful shutdown. IC Role / Device Role / Timing Role: Provides analog current feedback (OUT) and digital fault flag (COUT1) for system controller integration. Use Value: +50V/V gain and 1mV offset enable detection of sub-100mA faults; 50µA quiescent current minimizes impact on standby power budget. |
| Portable Medical Device Safety | Industrial DC Power Supply Monitoring |
Use Scenario: Overcurrent supervision in battery-powered infusion pumps to halt motor drive on cable short or occlusion. IC Role / Device Role / Timing Role: Acts as safety-critical current supervisor with latched fault output that persists until manual reset. Use Value: Latching behavior ensures fault condition is not missed during microcontroller interrupt latency; 600mV reference ensures trip point stability across temperature. | Use Scenario: Monitoring output current of 24V industrial DC-DC converters to detect open-load or overload conditions. IC Role / Device Role / Timing Role: High common-mode range (0V–28V) allows direct connection to high-side output rail without level-shifting. Use Value: Independent of supply voltage enables reliable operation even when converter output sags below nominal 24V during transient loads. |
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 |
|---|---|---|---|
| MAX4374HEUB+ | +100V/V gain, same package and temperature range; higher sensitivity for lower sense voltages (e.g., 50mV full-scale) | Better suited for ultra-low-power systems requiring <5mA fault detection with larger sense resistors | Select MAX4374HEUB+ when full-scale sense voltage must be ≤50mV to minimize I²R loss in high-current paths |
| INA219AIDR | I²C digital output, integrated ADC, 0.1% gain error, but requires external power and communication interface | Used where digital current/power/energy telemetry is required, not just analog monitoring or simple fault flagging | Choose INA219AIDR when system already uses I²C and needs calibrated current/voltage/power data, not just analog amplification and latched fault signaling |
Compared with MAX4374HEUB+, the MAX4374FEUB offers lower gain for improved noise immunity in noisy environments; compared with INA219AIDR, it delivers faster response (<4µs propagation delay), zero firmware dependency, and simpler board-level integration for basic overcurrent protection.
Availability
MAX4374FEUB is available at Aetrix Electronics and suitable for notebook computers, smart battery packs, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4374FEUB 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) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX4373/MAX4374/MAX4375 family was developed specifically for high-side current monitoring in space-constrained, battery-sensitive systems - integrating amplifier, reference, and dual comparators into minimal footprint packages.
FAQ
What is the function of the RESET pin on the MAX4374FEUB?
The RESET pin controls the latch state of the primary comparator output (COUT1). When held high (>2.0V), COUT1 latches upon overcurrent detection and remains asserted until RESET is pulsed low (≤0.8V) for ≥1.5µs. Holding RESET low makes the comparator transparent - COUT1 follows CIN1 in real time. This behavior is essential for controlled recovery after fault conditions and is documented in the MAX4374FEUB datasheet's "Internal Comparator(s)" section.
Does the MAX4374FEUB support window-detection functionality?
Yes, the MAX4374FEUB supports window detection using its dual-comparator architecture. CIN1 connects to the latched comparator (COUT1), and CIN2 connects to the unlatched comparator (COUT2). By configuring external resistive dividers on both inputs, designers can set upper and lower current thresholds. The MAX4374FEUB datasheet provides explicit window-detection circuit examples and equations for calculating IOVER and IUNDER based on gain and reference voltage.
What is the maximum common-mode voltage the MAX4374FEUB can handle?
The MAX4374FEUB supports a 0V to +28V input common-mode range at RS+ and RS−, independent of the VCC supply voltage. This means it remains fully functional even when VCC is at its minimum 2.7V and the sensed rail is at 28V - a critical capability for monitoring deeply discharged battery packs or high-side rails in multi-voltage systems. This specification is guaranteed and tested per the MAX4374FEUB Electrical Characteristics table.
Can the MAX4374FEUB be used for low-side current sensing?
Yes, the MAX4374FEUB can be used for low-side current sensing, but with reduced accuracy. The device's total output voltage error increases significantly when VRS+ falls below 2V, as confirmed by the MAX4374FEUB Typical Operating Characteristics plots (toc02, toc04–toc08). For optimal performance, high-side placement is recommended; low-side use should be validated per application requirements and may require calibration to compensate for error drift below 2V common-mode.
What package type is the MAX4374FEUB supplied in?
The MAX4374FEUB is supplied in a 10-pin µMAX® package (package code U10+2), RoHS-compliant, with 0.5mm lead pitch and exposed thermal pad. This compact 3mm × 3mm footprint is optimized for space-constrained portable electronics. The pin configuration - including RS+, RS−, OUT, CIN1, CIN2, COUT1, COUT2, RESET, VCC, and GND - is detailed in the MAX4374FEUB datasheet Figure "Pin Configurations" on page 12.
MAX4374FEUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Amplifier, Comparator, Reference
- Applications:
- Current Sensing, Power Management
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-uMAX/uSOP
MAX4374FEUB FAQ
1.How can I place an order for MAX4374FEUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4374FEUB 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 MAX4374FEUB reliable?
The price and inventory of MAX4374FEUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4374FEUB is usually 5 days.
3.What payment methods are accepted for MAX4374FEUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4374FEUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4374FEUB?
MAX4374FEUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4374FEUB 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 MAX4374FEUB?
For technical support, including MAX4374FEUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4374FEUB requirements.
6.How does Aetrix verify that MAX4374FEUB is sourced from the original manufacturer or authorized distributors?
All MAX4374FEUB 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 MAX4374FEUB meets industry standards.
7.What is the process for return or replacement of MAX4374FEUB?
All MAX4374FEUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX4374FEUB, 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 MAX4374FEUB part is unused and in its original packaging.
Return procedure for MAX4374FEUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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