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Analog Devices Inc./Maxim Integrated MAX4375TEUB
- Part No.:
- MAX4375TEUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4375TEUB.pdf
- Description:
- IC AMP COMP REF 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
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Product details
Overview
MAX4375TEUB from Maxim Integrated is a micropower, high-side current-sense amplifier with integrated latching comparator and 600mV bandgap reference, designed for overcurrent supervision in battery-powered systems. It features +20V/V gain, 0V to +28V input common-mode range independent of supply, 1mV max input offset voltage, and 50µA supply current - enabling precise, low-power current monitoring in notebook computers and smart battery chargers.
For engineers reviewing the MAX4375TEUB datasheet, MAX4375TEUB pinout, MAX4375TEUB application, or MAX4375TEUB equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in battery protection and window detection, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The MAX4375TEUB implements a high-side sensing architecture where RS+ and RS− sense differential voltage across an external shunt, amplified with fixed +20V/V gain to produce a proportional voltage output at OUT. Its 0V to +28V common-mode range remains fully functional even during battery deep discharge (VRS+ = 0V), and is decoupled from VCC (2.7V–28V).
It integrates two open-drain comparators: CIN1 drives the latched COUT1 output (trip threshold = 600mV ±10mV), while CIN2 drives unlatched COUT2 - enabling true window-detection functionality when used with external resistive dividers. RESET controls latch transparency and requires ≥1.5µs pulse width for reliable reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +20V/V - sets full-scale output = 20 × VSENSE; supports 150mV full-scale sense voltage |
| Input Offset Voltage | ≤1mV - ensures <±0.7% error at 150mV sense voltage, critical for low-current accuracy |
| Supply Current | 50µA - enables >1-year battery life in always-on monitoring applications |
| Common-Mode Range | 0V to +28V, supply-independent - maintains operation during battery pack deep discharge |
| Comparator Threshold | 600mV ±10mV - stable internal reference enables repeatable overcurrent trip at defined load current |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable equipment environments |
| Output Type | Voltage-output amplifier + dual open-drain comparators - eliminates need for external gain-setting resistors or pull-up logic |
Pinout & Package
MAX4375TEUB is housed in a 10-pin µMAX® package (package code U10+2), RoHS-compliant, with exposed pad for thermal enhancement. Pin pitch is 0.5mm; body size is 3mm × 3mm × 0.8mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5 | RS+, RS−, COUT1, COUT2, CIN2 | High-side sense inputs and dual comparator I/O - CIN2 enables window detection; COUT1 is latched, COUT2 is unlatched |
| 6 | GND | Analog ground reference - must be connected directly to low-impedance system ground plane |
| 7 | OUT | Voltage-output amplifier - provides gain-scaled VSENSE without external components |
| 8 | VCC | Single-supply input (2.7V–28V) - powers all internal blocks including reference and comparators |
| 9 | CIN1 | Positive input of latching comparator - compares against internal 600mV reference |
| 10 | RESET | Latch control input - low pulse ≥1.5µs resets COUT1; high enables latching behavior |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bandgap reference | 600mV ±10mV (±1.6% accuracy) - eliminates external reference IC and reduces BOM count |
| Latching comparator output | COUT1 remains asserted after overcurrent event until RESET pulse - prevents oscillation during fault recovery |
| Second comparator (CIN2/COUT2) | Unlatched, polarity-selectable via MAX4375 variant - enables true current window detection without external logic |
| Supply-independent common-mode range | 0V to +28V regardless of VCC - guarantees supervision during battery voltage collapse below 2.7V |
| Low quiescent current | 50µA typical - extends runtime in always-on battery monitoring without compromising response time |
Applications
| Smart Battery Protection | USB-C Power Delivery Supervision |
|---|---|
Use Scenario: Monitoring charge/discharge current in Li-ion battery packs to prevent overcurrent damage during fast charging. IC Role / Device Role / Timing Role: High-side current supervisor detecting >IOVER at CIN1 and asserting latched COUT1 to disable charging FET. Use Value: Eliminates need for separate reference, comparator, and amplifier - reduces PCB area by >40% vs discrete solution. | Use Scenario: Enforcing current limits on USB-C power delivery ports to comply with USB PD 3.1 specifications. IC Role / Device Role / Timing Role: Real-time current feedback generator (OUT) + fast overcurrent flag (COUT1) with <4µs propagation delay. Use Value: 50µA supply current allows continuous monitoring without violating USB-C standby power budgets. |
| Portable Medical Device Safety | Industrial 24V DC Power Rail Monitoring |
Use Scenario: Detecting motor stall or short-circuit in handheld diagnostic tools powered by 2-cell Li-ion batteries. IC Role / Device Role / Timing Role: High-side current sensor feeding analog-to-digital converter (OUT) while providing immediate hardware shutdown signal (COUT1). Use Value: 0V common-mode capability ensures supervision remains active even if battery drops to 0.5V under fault conditions. | Use Scenario: Monitoring 24V DC input rail in programmable logic controllers for overcurrent and undervoltage lockout. IC Role / Device Role / Timing Role: Dual-comparator window detector using CIN1/CIN2 to assert fault if current falls outside 100mA–2A range. Use Value: Internal 600mV reference and matched comparator thresholds ensure ±2% window accuracy across −40°C to +85°C. |
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 |
|---|---|---|---|
| MAX4374TEUB+ | +20V/V gain, same 10-pin µMAX package, but single comparator only (no CIN2/COUT2) | Lacks window-detection capability; suitable only for simple overcurrent flagging | Select when dual-comparator functionality is unnecessary and cost minimization is priority |
| INA219BIDR | I²C digital output, 12-bit ADC, bidirectional sensing, 26V common-mode, but 1mA supply current | Requires microcontroller interface; not pin-compatible; adds firmware overhead | Select when digital telemetry, energy integration, or bidirectional current measurement is required |
Compared with MAX4374TEUB+, MAX4375TEUB adds a second comparator for window detection without increasing supply current or package size; compared with INA219BIDR, it delivers deterministic hardware-level response with 50× lower quiescent current but no digital interface or bidirectional capability.
Availability
MAX4375TEUB is available at Aetrix Electronics and suitable for smart battery protection, USB-C power delivery supervision, portable medical device safety, and industrial 24V DC power rail monitoring requiring stable component supply across long production lifecycles.
Supply support for MAX4375TEUB 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 MAX4375TEUB belongs to the MAX4373/MAX4374/MAX4375 family of high-side current-sense supervisors, engineered specifically for low-power, high-accuracy overcurrent detection in battery-powered and portable systems.
FAQ
What is the function of the RESET pin on the MAX4375TEUB?
The RESET pin on the MAX4375TEUB controls the latching behavior of the primary comparator output (COUT1). When RESET is held high (>2.0V), COUT1 latches upon overcurrent detection at CIN1 and remains asserted until RESET is pulsed low (<0.8V) for ≥1.5µs. Holding RESET low makes the comparator transparent, allowing real-time tracking. This dual-mode operation enables both fault-hold and dynamic monitoring within a single MAX4375TEUB device.
Does the MAX4375TEUB support window-detection functionality, and how is it implemented?
Yes, the MAX4375TEUB supports window detection using its dual-comparator architecture. CIN1 connects to the positive input of the latched comparator (threshold = 600mV), while CIN2 connects to the positive input of the unlatched comparator (same 600mV reference). By configuring external resistor dividers on both inputs, users define upper (IOVER) and lower (IUNDER) current thresholds. The logical combination of COUT1 and COUT2 outputs indicates whether sensed current falls inside or outside the defined window - all implemented with a single MAX4375TEUB and no external logic gates.
What is the maximum common-mode voltage the MAX4375TEUB can handle, and does it depend on VCC?
The MAX4375TEUB supports a 0V to +28V input common-mode range at RS+ and RS−, and this range is fully independent of the VCC supply voltage. Even when VCC is at its minimum operating level of +2.7V, the device continues to accurately amplify differential signals across the full 0V–28V span - a critical feature for battery-powered systems where RS+ may drop to 0V during deep discharge while VCC remains above 2.7V. This independence is guaranteed by design and verified across −40°C to +85°C.
Can the MAX4375TEUB be used for low-side current sensing, and what are the trade-offs?
Yes, the MAX4375TEUB can be used for low-side current sensing by connecting RS+ to the load side and RS− to ground. However, total output voltage error increases significantly when VRS+ falls below +2V due to degraded CMR and gain accuracy - as confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots (toc03–toc08). For high-accuracy low-side applications, dedicated low-side amplifiers like the MAX4080 are preferred; the MAX4375TEUB is optimized for high-side use where its 0V–28V common-mode range and ground-path isolation deliver maximum value.
What is the purpose of the internal 600mV bandgap reference in the MAX4375TEUB?
The internal 600mV ±10mV bandgap reference in the MAX4375TEUB serves as the precise trip threshold for both comparators (CIN1 and CIN2), eliminating the need for external reference ICs or resistor dividers to set detection levels. Its ±1.6% accuracy over temperature ensures consistent overcurrent and window-detection thresholds across −40°C to +85°C. This reference also enables direct interfacing with standard logic-level pull-up voltages (up to 5V) on COUT1 and COUT2, simplifying system integration while maintaining accuracy - a key enabler of the compact, low-component-count design enabled by the MAX4375TEUB.
MAX4375TEUB 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
MAX4375TEUB FAQ
1.How can I place an order for MAX4375TEUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4375TEUB 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 MAX4375TEUB reliable?
The price and inventory of MAX4375TEUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4375TEUB is usually 5 days.
3.What payment methods are accepted for MAX4375TEUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4375TEUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4375TEUB?
MAX4375TEUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4375TEUB 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 MAX4375TEUB?
For technical support, including MAX4375TEUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4375TEUB requirements.
6.How does Aetrix verify that MAX4375TEUB is sourced from the original manufacturer or authorized distributors?
All MAX4375TEUB 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 MAX4375TEUB meets industry standards.
7.What is the process for return or replacement of MAX4375TEUB?
All MAX4375TEUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX4375TEUB, 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 MAX4375TEUB part is unused and in its original packaging.
Return procedure for MAX4375TEUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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