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Analog Devices Inc./Maxim Integrated MAX4375FEUB
- Part No.:
- MAX4375FEUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4375FEUB.pdf
- Description:
- IC AMP COMP REF 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,238
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Product details
Overview
MAX4375FEUB 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 voltage, 1mV max input offset voltage, and latching comparator output. Used in smart battery chargers and portable power-management systems where ground-path integrity and deep-discharge monitoring are critical.
For engineers reviewing the MAX4375FEUB datasheet, MAX4375FEUB pinout, MAX4375FEUB application, or MAX4375FEUB equivalent, key selection considerations include its 10-pin µMAX package, +50V/V fixed gain, 50µA supply current, 0.6V internal reference accuracy (±1.6%), and compatibility with external sense resistors for scalable current thresholds.
Technical Context
The MAX4375FEUB implements a high-accuracy current-sense amplifier with rail-to-rail common-mode operation down to 0V, enabling reliable monitoring during battery deep discharge. Its comparator uses an internal 600mV reference and latches on overcurrent detection, eliminating oscillation without external components.
Unlike the MAX4373 and MAX4374, the MAX4375FEUB includes two comparators - one latched (CIN1 → COUT1) and one unlatched (CIN2 ↔ COUT2) - supporting window-detection functionality. The device operates from a single +2.7V to +28V supply and maintains full accuracy across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +50V/V - sets output voltage scaling for 100mV full-scale sense voltage; enables precise threshold setting with standard external sense resistors. |
| Input Offset Voltage | 1mV (max) - ensures <±2% total output error at low sense voltages (e.g., 6.25mV), critical for accurate low-current detection. |
| Common-Mode Range | 0V to +28V, supply-independent - allows direct connection to battery packs at 0V terminal voltage without loss of sensing capability. |
| Supply Current | 50µA - extends runtime in always-on battery monitoring applications such as smart battery fuel gauges. |
| Reference Accuracy | ±1.6% - defines absolute trip-point tolerance for comparator-based overcurrent protection (e.g., 600mV ±9.6mV). |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive accessory environments including portable medical devices and ruggedized IoT endpoints. |
| Bandwidth | 200kHz - supports fast transient response for pulse-load detection in DC-DC converter output monitoring. |
Pinout & Package
MAX4375FEUB is housed in a 10-pin µMAX® package (package code U10+2), 3mm × 3mm, 0.5mm pitch, RoHS-compliant, with exposed pad for thermal enhancement. Pin 1 marked by dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RS+ | High-side sense input positive | Connects to load side of external sense resistor; accepts up to +28V common-mode voltage regardless of VCC. |
| 2 RS− | High-side sense input negative | Connects to power source side of sense resistor; differential input (RS+ − RS−) defines sensed current magnitude. |
| 3 OUT | Current-sense amplifier output | Voltage output = 50 × (RS+ − RS−); no external gain-setting resistors required; clamped at 12V max. |
| 4 CIN1 | Comparator 1 input (latched) | Positive input of latching comparator referenced to internal 600mV; triggers COUT1 open-drain latch on overthreshold. |
| 5 CIN2 | Comparator 2 input (unlatched) | Configurable as high- or low-side input depending on MAX4375 variant; used with COUT2 for window detection. |
| 6 COUT1 | Latched comparator output | Open-drain output; remains latched low after overcurrent until RESET is pulsed; requires external pull-up (≤5V). |
| 7 COUT2 | Unlatched comparator output | Open-drain output; responds immediately to CIN2 threshold crossing; supports real-time window violation flagging. |
| 8 RESET | Latch control input | Active-low reset: <0.8V disables latch (transparent mode); >2.0V enables latching; minimum pulse width 1.5µs. |
| 9 VCC | Power supply input | Single supply +2.7V to +28V; bypass with ≥0.1µF ceramic capacitor to GND for transient immunity. |
| 10 GND | Analog/digital ground | Substrate tied to GND; serves as reference for all analog circuitry and comparator thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bandgap reference | 600mV ±1.6% - eliminates need for external precision reference, reducing BOM count and layout area in overcurrent protection circuits. |
| Latching comparator output | COUT1 remains asserted after overcurrent event until explicit RESET - prevents MOSFET gate oscillation in high-side switch protection designs. |
| Dual-comparator architecture | CIN1/COUT1 (latched) + CIN2/COUT2 (unlatched) - enables simultaneous high/low threshold detection for current window monitoring without external logic. |
| Zero-volt common-mode operation | Functional at VRS+ = 0V - ensures continuous current monitoring even when battery pack voltage drops below system regulator dropout. |
| Micropower operation | 50µA supply current - allows integration into always-on battery fuel gauge subsystems without compromising standby life. |
Applications
| Smart Battery Chargers | Portable Medical Devices |
|---|---|
|
Use Scenario: Real-time charge/discharge current monitoring in Li-ion battery packs with integrated protection ICs. IC Role / Device Role / Timing Role: High-side current-sense amplifier provides isolated feedback to fuel gauge MCU; latched comparator triggers hardware cutoff during overcurrent faults. Use Value: Maintains ground-path integrity for charger ICs and avoids interference with battery temperature or voltage sensing lines. |
Use Scenario: Load-current supervision in handheld ultrasound or infusion pump controllers requiring fail-safe shutdown on motor stall. IC Role / Device Role / Timing Role: Dual comparator configures window detection: CIN1 monitors upper limit (overload), CIN2 monitors lower limit (open-circuit or pump occlusion). Use Value: Enables single-chip detection of both overcurrent and no-current fault conditions, reducing component count vs. discrete comparator solutions. |
| Industrial IoT Edge Nodes | USB-C Power Delivery Adapters |
|
Use Scenario: Board-level current telemetry in battery-backed wireless sensor nodes deployed in remote locations. IC Role / Device Role / Timing Role: OUT pin feeds ADC input of microcontroller; low 50µA quiescent current minimizes self-loading on primary battery supply. Use Value: Delivers ±2% full-scale accuracy across –40°C to +85°C, enabling reliable energy accounting without calibration drift compensation. |
Use Scenario: Input current limiting and fault reporting in compact USB-C PD sink adapters with programmable voltage/current profiles. IC Role / Device Role / Timing Role: High common-mode range (0V–28V) accommodates variable adapter input (5V/9V/15V/20V); COUT1 drives enable/disable logic of synchronous rectifier controller. Use Value: Eliminates need for isolated current sensors or high-side gate drivers in cost-sensitive, space-constrained AC/DC adapter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-sense amplifier with comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4374FEUB+ | +50V/V gain, 10-pin µMAX, but only one comparator (latched only); no CIN2/COUT2 window-detection capability. | Suitable for simple overcurrent cutoff only; cannot implement dual-threshold window detection without adding external comparator. | Select MAX4374FEUB+ when design requires only latched fault flagging and board space permits minimal peripheral components. |
| INA219BIDR | I²C digital output, 26V common-mode, 0.1% gain accuracy, but 1mA supply current and no internal comparator or reference. | Requires host MCU for threshold evaluation and decision logic; adds firmware complexity and latency vs. hardware-latched response. | Choose INA219BIDR when system already uses I²C bus and needs high-precision bidirectional current/voltage/power telemetry beyond simple fault signaling. |
Compared with MAX4374FEUB+, the MAX4375FEUB provides dual-comparator window detection in the same package; compared with INA219BIDR, it delivers deterministic sub-microsecond hardware fault response with zero MCU dependency and 20× lower quiescent current.
Availability
MAX4375FEUB is available at Aetrix Electronics and suitable for smart battery chargers, portable medical devices, and industrial IoT edge nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4375FEUB 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, sensing, and connectivity applications in industrial, automotive, and consumer markets.
The MAX4375FEUB belongs to the MAX4373/MAX4374/MAX4375 family of high-side current-sense supervisors, engineered specifically for battery-powered systems needing accurate, low-power, ground-path-preserving current monitoring with hardware-based fault response.
FAQ
What is the function of the RESET pin on the MAX4375FEUB?
The RESET pin controls the latching behavior of the CIN1 comparator. When held high (>2.0V), the comparator output at COUT1 latches upon overthreshold detection and remains asserted until RESET is pulsed low (<0.8V) for ≥1.5µs. Holding RESET low makes the comparator transparent, allowing real-time tracking of CIN1. This dual-mode operation enables flexible fault-handling strategies in the MAX4375FEUB.
Does the MAX4375FEUB support window-detection functionality?
Yes, the MAX4375FEUB supports hardware window detection using its two independent comparators. CIN1 (with latched COUT1) and CIN2 (with unlatched COUT2) connect to opposite sides of the internal 600mV reference, enabling simultaneous high- and low-threshold monitoring. By wiring COUT1 and COUT2 together with a pull-up, the combined output goes low when load current falls outside the defined window - a capability unique to the MAX4375FEUB among the MAX4373/4/5 series.
What is the maximum sense voltage supported by the MAX4375FEUB?
The MAX4375FEUB supports a full-scale sense voltage of 100mV for its +50V/V gain version. This means the differential voltage (RS+ − RS−) must not exceed 100mV to maintain specified accuracy. At this input, the amplifier output reaches 5.0V (50 × 0.1V). The output is internally clamped at 12V, but the 100mV full-scale limit is defined by gain accuracy and offset error specifications in the MAX4375FEUB datasheet.
Can the MAX4375FEUB operate with a 0V common-mode input voltage?
Yes, the MAX4375FEUB guarantees operation with VRS+ as low as 0V, independent of VCC. This feature ensures uninterrupted current monitoring during battery deep discharge - for example, when a 3-cell Li-ion pack drops below 6V. The 0V–28V common-mode range is explicitly tested and specified, making the MAX4375FEUB suitable for applications where supply rail collapse must not disable fault protection.
What package type and footprint does the MAX4375FEUB use?
The MAX4375FEUB uses a 10-pin µMAX® package (outline 21-0061, land pattern 90-0330), measuring 3mm × 3mm with 0.5mm pitch and an exposed thermal pad. It is RoHS-compliant (indicated by '+' suffix) and pin-compatible with other 10-pin µMAX variants in the MAX4374/MAX4375 families. No SOIC alternative exists for the +50V/V gain version in 10-pin configuration - only the MAX4375FEUB matches this exact specification.
MAX4375FEUB 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
MAX4375FEUB FAQ
1.How can I place an order for MAX4375FEUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4375FEUB 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 MAX4375FEUB reliable?
The price and inventory of MAX4375FEUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4375FEUB is usually 5 days.
3.What payment methods are accepted for MAX4375FEUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4375FEUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4375FEUB?
MAX4375FEUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4375FEUB 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 MAX4375FEUB?
For technical support, including MAX4375FEUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4375FEUB requirements.
6.How does Aetrix verify that MAX4375FEUB is sourced from the original manufacturer or authorized distributors?
All MAX4375FEUB 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 MAX4375FEUB meets industry standards.
7.What is the process for return or replacement of MAX4375FEUB?
All MAX4375FEUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX4375FEUB, 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 MAX4375FEUB part is unused and in its original packaging.
Return procedure for MAX4375FEUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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