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Analog Devices Inc./Maxim Integrated MAX4073HAUT
- Part No.:
- MAX4073HAUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX4073HAUT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,988
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Product details
Overview
MAX4073HAUT from Maxim Integrated is a high-side current-sense amplifier with voltage output, designed for precision battery-charger control loops and portable power monitoring. It delivers 100V/V fixed gain, ±1.0% full-scale accuracy at +25°C, 1.6MHz bandwidth, and operates from +3V to +28V supply across -40°C to +125°C. Its +2V to +28V input common-mode range-fully independent of VCC-enables direct sensing on battery anodes in smartphones and smart chargers.
For engineers reviewing the MAX4073HAUT datasheet, MAX4073HAUT pinout, MAX4073HAUT application, or MAX4073HAUT equivalent, this page provides verified technical context, validated pin functions, real-world use cases in battery-powered systems, and confirmed alternative options for current-sense amplifier selection.
Technical Context
The MAX4073HAUT implements a bipolar-based current-mirror architecture that converts differential sense voltage (VRS+ – VRS−) into a proportional voltage output without external gain resistors. Its input stage maintains high impedance at RS+ and RS−, enabling accurate sensing while preserving ground integrity in high-side configurations.
It features a 1.6MHz small-signal bandwidth (at VSENSE = 100mV), 12kΩ output resistance, and guaranteed ±7.0% total output voltage error over full temperature range. Power-supply rejection ratio exceeds 70dB up to 10kHz, and saturation recovery time is 5µs-critical for fast transient response in switching regulator feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100V/V - sets full-scale output to 10V for 100mV sense voltage, enabling direct ADC interfacing without scaling. |
| Full-Scale Accuracy | ±1.0% at +25°C - ensures <10mV absolute error at 100mV input, critical for battery fuel-gauge calibration. |
| Bandwidth | 1.6MHz - supports closed-loop stability in high-frequency battery charger controllers (e.g., 500kHz–1MHz buck converters). |
| Common-Mode Range | +2V to +28V, independent of VCC - allows monitoring Li-ion batteries down to 2.5V and 24V industrial rails without level-shifting. |
| Supply Current | 0.5mA typical at VCC = 28V - enables always-on current monitoring in low-power portable devices. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive charging modules and industrial battery management systems. |
| Output Resistance | 12kΩ - requires high-Z load or buffer op-amp to avoid >1% gain error from loading effects. |
Pinout & Package
The MAX4073HAUT is housed in a RoHS-compliant 6-pin SOT23 package (package code U6+4, outline 21-0058), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. This compact footprint supports high-density PCB layouts in space-constrained battery packs and USB-C PD adapters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Primary return path for internal bias currents; must connect to low-impedance system ground near sense resistor. |
| 2 (RS−) | Sense resistor load-side terminal | Connects to load/battery cathode; forms differential input with RS+; high-impedance node minimizes current injection error. |
| 3 (RS+) | Sense resistor power-side terminal | Connects to battery anode or power rail; accepts +2V to +28V common-mode voltage regardless of VCC. |
| 4 (VCC) | Positive supply input | Accepts +3V to +28V; bypass with 0.1µF ceramic capacitor to GND for noise immunity in noisy switching environments. |
| 5 (OUT) | Voltage output | Delivers VOUT = 100 × (VRS+ − VRS−); 12kΩ source impedance mandates high-Z ADC input or unity-gain buffer. |
| 6 (NC) | No connect | Internally unused; must remain unconnected per datasheet-no tie-to-ground or pull-up allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 100V/V gain | Eliminates external gain-setting resistors, reducing BOM count and layout sensitivity in production battery monitors. |
| +2V to +28V common-mode range | Enables direct high-side sensing on single-cell Li-ion (2.7–4.2V) and 24V industrial rails without auxiliary supplies or level shifters. |
| 1.6MHz bandwidth | Supports real-time current feedback in high-frequency DC-DC converters, preventing instability during load transients. |
| ±1.0% full-scale accuracy at +25°C | Meets tight calibration requirements for smart battery fuel gauging and charger compliance testing (e.g., USB PD 3.0). |
| Automotive-grade temp range | Validated for operation in vehicle-mounted battery chargers, EV accessory power modules, and under-dash electronics. |
Applications
| Smartphone Battery Charging | USB-C Power Delivery Adapter |
|---|---|
|
Use Scenario: Real-time charge current monitoring during CC/CV charging cycles in dual-cell smartphone battery packs. IC Role / Device Role / Timing Role: High-side current-sense amplifier providing isolated analog feedback to the PMIC's charger controller. Use Value: Enables precise end-of-charge detection and thermal derating by delivering 10V full-scale output for 100mV sense voltage-compatible with 12-bit internal ADCs. |
Use Scenario: Input current limiting and safety cutoff in 60W USB-C PD adapters with programmable power supply (PPS) capability. IC Role / Device Role / Timing Role: High-side monitor on the primary-side 24V bus feeding the DC-DC converter, feeding current data to the PD controller MCU. Use Value: 1.6MHz bandwidth captures fast inrush events; ±1.0% accuracy ensures compliance with IEC 62368-1 current-limit tolerances. |
| Lithium-Ion Smart Charger Module | Industrial 24V Battery Management System |
|
Use Scenario: Precision current measurement in standalone Li-ion charger ICs used in medical portable devices and handheld test equipment. IC Role / Device Role / Timing Role: Voltage-output current sensor interfacing directly to the charger IC's analog current-set input or microcontroller ADC. Use Value: Fixed 100V/V gain eliminates resistor tolerance errors; -40°C to +125°C rating supports operation in sterilizable enclosures and high-temp battery compartments. |
Use Scenario: Load-current monitoring in DIN-rail mounted 24V lead-acid battery backup systems for telecom infrastructure. IC Role / Device Role / Timing Role: High-side current amplifier feeding isolated sigma-delta ADC for remote telemetry and predictive maintenance analytics. Use Value: +2V to +28V common-mode range accommodates aging battery voltage drop below 12V while maintaining accuracy-no reconfiguration needed. |
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 |
|---|---|---|---|
| MAX4173HAUT+ | 6-pin SOT23, same 100V/V gain, but wider 0V to +28V common-mode range and higher 2.5mA supply current. | Required where sensing must extend down to 0V (e.g., ground-referenced loads), not suitable for battery anode monitoring below +2V. | Select MAX4173HAUT+ only if 0V common-mode capability is mandatory; otherwise MAX4073HAUT offers lower quiescent power and identical gain/accuracy. |
| INA240A1D | 8-pin SOIC, 20V/V gain, ±0.1% max offset, 4MHz bandwidth, but requires external gain resistors and has +2.7V to +80V common-mode range. | Better for ultra-high-precision applications (e.g., motor phase current) where offset drift dominates error budget; unsuitable for space-constrained portable designs. | Choose INA240A1D when sub-0.5% total error over temperature is required and board area permits larger package; MAX4073HAUT remains optimal for cost-sensitive, size-limited battery chargers. |
Compared with MAX4173HAUT+, the MAX4073HAUT saves 2mA supply current and matches gain/accuracy while trading 0V sensing for superior battery-anode compatibility. Against INA240A1D, it sacrifices bandwidth and offset performance for integrated gain, smaller footprint, and lower system cost in consumer-grade power management.
Availability
MAX4073HAUT is available at Aetrix Electronics and suitable for smartphone battery charging, USB-C power delivery adapters, and industrial 24V battery management systems requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for MAX4073HAUT 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and portable applications.
The MAX4073 family was designed specifically for cost-sensitive, space-constrained high-side current sensing in battery-powered systems-emphasizing integration, wide common-mode operation, and automotive temperature resilience.
FAQ
What is the maximum common-mode voltage the MAX4073HAUT can handle?
The MAX4073HAUT supports a +2V to +28V input common-mode voltage range, fully independent of its supply voltage (VCC). This means it can accurately sense current on a 24V rail even when powered from a 3.3V supply, and remains functional down to 2V-ideal for monitoring partially discharged Li-ion batteries. Absolute maximum ratings allow RS+/RS− to tolerate up to +30V relative to GND.
Does the MAX4073HAUT require external gain-setting resistors?
No, the MAX4073HAUT does not require external gain-setting resistors. It integrates a fixed 100V/V gain internally via precision resistor ratios and current-mirror topology. This eliminates resistor tolerance errors, reduces PCB area, and simplifies design-unlike general-purpose op-amps or programmable current-sense amplifiers that rely on external feedback networks.
What is the output impedance of the MAX4073HAUT, and how does it affect system design?
The MAX4073HAUT has a nominal output impedance of 12kΩ, as specified in the Electrical Characteristics table. This high source impedance means connecting a load <100kΩ to the OUT pin introduces measurable gain error-e.g., a 100kΩ load causes ~11% error. For reliable operation, interface OUT to a high-impedance ADC input or use a unity-gain buffer op-amp with rail-to-rail output swing.
Can the MAX4073HAUT be used in automotive under-hood applications?
Yes, the MAX4073HAUT is specified over the full automotive temperature range of -40°C to +125°C and qualified for use in under-hood battery management modules, engine control ancillary power supplies, and ADAS camera power systems. Its bipolar process and robust ESD protection (per JEDEC JS-001) ensure reliability in harsh thermal and electrical environments.
How does the MAX4073HAUT differ from the MAX4073HAXK+T variant?
The MAX4073HAUT+T uses a 6-pin SOT23 package (2.9mm × 1.6mm), while the MAX4073HAXK+T uses a 5-pin SC70 package (2.0mm × 1.25mm). Both share identical electrical specs-including 100V/V gain, ±1.0% accuracy, and -40°C to +125°C operation-but differ in pin count (6 vs. 5), package footprint, and thermal dissipation (696mW vs. 200mW at +70°C). The SOT23 version includes a dedicated NC pin; the SC70 omits it.
MAX4073HAUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 1.8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 40 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 500µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 28 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX4073HAUT FAQ
1.How can I place an order for MAX4073HAUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4073HAUT 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 MAX4073HAUT reliable?
The price and inventory of MAX4073HAUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4073HAUT is usually 5 days.
3.What payment methods are accepted for MAX4073HAUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4073HAUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4073HAUT?
MAX4073HAUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4073HAUT 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 MAX4073HAUT?
For technical support, including MAX4073HAUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4073HAUT requirements.
6.How does Aetrix verify that MAX4073HAUT is sourced from the original manufacturer or authorized distributors?
All MAX4073HAUT 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 MAX4073HAUT meets industry standards.
7.What is the process for return or replacement of MAX4073HAUT?
All MAX4073HAUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX4073HAUT, 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 MAX4073HAUT part is unused and in its original packaging.
Return procedure for MAX4073HAUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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