My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4073FAXK-T
- Part No.:
- MAX4073FAXK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4073FAXK-T.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,831
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4073FAXK-T from Maxim Integrated is a high-side current-sense amplifier with voltage output, designed for precision battery-charger current monitoring in portable systems. It delivers +50V/V fixed gain, ±1.0% full-scale accuracy at +25°C, 1.7MHz 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 at battery terminals without ground-path disruption.
For engineers reviewing the MAX4073FAXK-T datasheet, MAX4073FAXK-T pinout, MAX4073FAXK-T application, or MAX4073FAXK-T equivalent, this device serves as a compact, RoHS-compliant SC70 solution for high-side sensing where gain stability, low supply current (0.5mA), and automotive-grade temperature performance are critical selection criteria.
Technical Context
The MAX4073FAXK-T implements a bipolar-based current-mirror architecture that converts differential sense voltage (VRS+ – VRS−) into a proportional voltage output without external gain-setting resistors. Its input stage maintains high-impedance inputs and rejects common-mode voltages up to +28V regardless of VCC, enabling operation in high-side configurations where source voltage exceeds supply rail.
Output is delivered via a 12kΩ current-source output stage, requiring high-impedance loading to preserve gain accuracy. The device achieves 5µs power-up time and 5µs saturation recovery, supporting use inside fast-closed-loop battery-charger control systems with minimal latency and no phase reversal under overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +50V/V - fixed internal gain enables direct 100mV sense voltage → 5V output scaling without external components |
| Full-Scale Accuracy | ±1.0% at +25°C - ensures ≤50mV error on 5V full-scale output for precise current threshold detection |
| Bandwidth | 1.7MHz - supports real-time monitoring of fast transient load currents in switching regulator feedback paths |
| Supply Current | 0.5mA at VCC = 28V - enables low-power operation in always-on battery-monitoring circuits |
| Common-Mode Range | +2V to +28V, independent of VCC - allows sensing at battery anode even when VCC is derived from regulated 3.3V/5V rails |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial embedded power management applications |
| Package | 5-pin SC70 (2.0mm × 1.25mm) - half-size footprint vs SOT23, optimized for space-constrained portable PCB layouts |
Pinout & Package
MAX4073FAXK-T is housed in a lead(Pb)-free, RoHS-compliant 5-pin SC70 package (outline 21-0076). This ultra-compact surface-mount package measures 2.0mm × 1.25mm × 0.9mm and features gull-wing leads compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SC70) | GND | Ground reference for internal circuitry and output stage; must be connected directly to low-impedance system ground plane |
| 2 (SC70) | VCC | Positive supply input (+3V to +28V); requires local 0.1µF ceramic bypass capacitor to GND for stability |
| 3 (SC70) | RS+ | High-side connection to external sense resistor; accepts common-mode voltages up to +28V independent of VCC |
| 4 (SC70) | RS− | Low-side connection to external sense resistor; forms differential input pair with RS+ for current measurement |
| 5 (SC70) | OUT | Voltage output terminal (VOUT = 50 × VSENSE); 12kΩ output impedance necessitates high-Z load or buffer op amp |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +50V/V Gain | Eliminates external gain resistors, reducing BOM count and layout sensitivity while ensuring repeatable 5V output for 100mV sense voltage |
| ±1.0% Full-Scale Accuracy | Enables reliable current threshold detection in smart battery packs without calibration overhead |
| 1.7MHz Bandwidth | Supports closed-loop response in high-frequency battery-charger control circuits with <1µs settling time |
| +2V to +28V Common-Mode Range | Permits direct high-side sensing at Li-ion battery anodes (2.7–4.2V) or 24V industrial bus lines without level-shifting circuitry |
| 0.5mA Supply Current | Minimizes quiescent power draw in always-on current monitoring paths for extended battery runtime |
Applications
| Smart Battery Chargers | Portable System Power Management |
|---|---|
|
Use Scenario: Real-time charging current monitoring in USB-C PD and multi-cell Li-ion battery chargers. IC Role / Device Role / Timing Role: High-side current-sense amplifier providing isolated, ground-referenced voltage output proportional to charge current. Use Value: Enables accurate CC/CV transition detection and thermal derating without disrupting charger ground return path. |
Use Scenario: Board-level current supervision in notebook computers and tablets during sleep/wake transitions. IC Role / Device Role / Timing Role: Voltage-output current monitor interfacing with microcontroller ADC for dynamic power budgeting. Use Value: Delivers stable 5V-scale output for 12-bit ADC sampling with <1% full-scale error across -40°C to +85°C ambient. |
| Automotive Body Control Modules | PA Bias Current Monitoring |
|
Use Scenario: Load-current monitoring for LED headlamp drivers and window motor controllers in 12V/24V vehicle systems. IC Role / Device Role / Timing Role: High-side sense amplifier operating across automotive temperature range with immunity to battery voltage transients. Use Value: Provides fault detection for short-circuit and open-load conditions using factory-trimmed ±1.0% gain accuracy. |
Use Scenario: RF power amplifier bias current regulation in cellular base stations and small-cell radios. IC Role / Device Role / Timing Role: Precision current sensor feeding analog feedback loop to maintain PA linearity and efficiency. Use Value: 1.7MHz bandwidth supports fast correction of PA current drift due to temperature or aging without digital compensation. |
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 |
|---|---|---|---|
| MAX4173FAUT+T | 6-pin SOT23 package; wider 0V to +28V common-mode range; same +50V/V gain and ±1.0% accuracy | Supports sensing down to 0V common-mode (e.g., low-side or ground-referenced loads), but larger footprint and higher parasitic capacitance | Select MAX4173FAUT+T only if 0V common-mode capability is required; otherwise MAX4073FAXK-T offers superior board area efficiency |
| INA210AIDCKR | TI part in SC70-6; ±0.5% gain error; 10µV offset; 0.35mA supply current; 0V to +26V common-mode | Lacks true high-side-only operation below +2V; requires separate VREF for bidirectional sensing; lower bandwidth (120kHz) | Choose INA210AIDCKR for ultra-low offset or bidirectional current sensing; avoid for battery anode monitoring below +2V |
Compared with MAX4173FAUT+T and INA210AIDCKR, MAX4073FAXK-T uniquely combines +2V minimum common-mode operation, SC70-5 footprint, and 1.7MHz bandwidth-making it optimal for space-constrained, high-speed battery-charger feedback loops where sensing starts at nominal Li-ion cell voltage.
Availability
MAX4073FAXK-T is available at Aetrix Electronics and suitable for smart battery chargers, portable system power management, and automotive body control modules requiring stable component supply, automotive-grade qualification, and long-term lifecycle continuity.
Supply support for MAX4073FAXK-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) designs precision analog and mixed-signal ICs for power, sensing, and connectivity applications, with deep expertise in high-reliability, low-power signal conditioning.
The MAX4073 family targets cost-sensitive, space-constrained high-side current sensing in battery-powered and automotive systems-emphasizing integration, accuracy, and wide common-mode operation without external gain components.
FAQ
What is the exact gain value and tolerance of MAX4073FAXK-T?
The MAX4073FAXK-T has a fixed internal gain of +50V/V. Its gain accuracy is ±1.0% at +25°C, ±4.5% over the full -40°C to +125°C temperature range, and ±6.5% at temperature extremes with 10mV–100mV sense voltage. This specification is guaranteed by production testing and documented in the Electrical Characteristics table of the MAX4073FAXK-T datasheet.
Does MAX4073FAXK-T require external gain-setting resistors?
No, MAX4073FAXK-T does not require external gain-setting resistors. Its +50V/V gain is implemented entirely within the IC using matched internal resistors and a precision current-mirror architecture. This eliminates resistor matching errors, layout sensitivity, and BOM cost-making MAX4073FAXK-T a truly integrated, resistorless current-sense solution.
Can MAX4073FAXK-T operate with a 3.3V supply while sensing a 24V battery?
Yes, MAX4073FAXK-T can operate with a +3.3V supply while accurately sensing current through a +24V battery. Its input common-mode range is +2V to +28V and fully independent of VCC. As long as VCC ≥ 3V and the full-scale output voltage (e.g., 5V for 100mV sense) remains ≤ VCC – 1.2V, the device functions correctly-verified across all operating conditions in the MAX4073FAXK-T datasheet.
What is the output impedance of MAX4073FAXK-T and how does it affect system design?
The MAX4073FAXK-T has a nominal output impedance of 12kΩ, configured as a current-source output stage. Loading OUT with resistance <100kΩ introduces measurable gain error per the formula %Error = 100 × (1 − RLOAD/(RLOAD + 12kΩ)). Therefore, MAX4073FAXK-T must drive high-impedance inputs (e.g., op-amp buffers or MCU ADCs with ≥1MΩ input impedance) to maintain specified ±1.0% accuracy.
Is MAX4073FAXK-T qualified for automotive applications?
Yes, MAX4073FAXK-T is explicitly specified over the automotive temperature range of -40°C to +125°C and tested per AEC-Q100 stress requirements. Its SC70 package is RoHS-compliant (+ suffix), and its electrical parameters-including gain accuracy, bandwidth, and common-mode rejection-are guaranteed across this full range, making MAX4073FAXK-T suitable for under-hood and cabin-mounted automotive power systems.
MAX4073FAXK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.7 MHz
- 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:
- SC-70-5
MAX4073FAXK-T FAQ
1.How can I place an order for MAX4073FAXK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4073FAXK-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 MAX4073FAXK-T reliable?
The price and inventory of MAX4073FAXK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4073FAXK-T is usually 5 days.
3.What payment methods are accepted for MAX4073FAXK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4073FAXK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4073FAXK-T?
MAX4073FAXK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4073FAXK-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 MAX4073FAXK-T?
For technical support, including MAX4073FAXK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4073FAXK-T requirements.
6.How does Aetrix verify that MAX4073FAXK-T is sourced from the original manufacturer or authorized distributors?
All MAX4073FAXK-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 MAX4073FAXK-T meets industry standards.
7.What is the process for return or replacement of MAX4073FAXK-T?
All MAX4073FAXK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4073FAXK-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 MAX4073FAXK-T part is unused and in its original packaging.
Return procedure for MAX4073FAXK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4073FAXK-T Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
