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Analog Devices Inc./Maxim Integrated MAX4372HEBT+TG45
- Part No.:
- MAX4372HEBT+TG45
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-WFBGA, CSPBGA
- Datasheet:
-
MAX4372HEBT+TG45.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 5UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,726
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Product details
Overview
MAX4372HEBT+TG45 from Maxim Integrated is a precision high-side current-sense amplifier with 100V/V fixed gain, operating from 2.7V to 28V supply and consuming only 30μA. It features 0.3mV input offset voltage, 0.18% full-scale accuracy, and a 0–28V input common-mode range independent of supply voltage-enabling accurate battery discharge monitoring in notebook computers and smart-battery chargers.
For engineers reviewing the MAX4372HEBT+TG45 datasheet, MAX4372HEBT+TG45 pinout, MAX4372HEBT+TG45 application, or MAX4372HEBT+TG45 equivalent, key selection criteria include its UCSP package footprint, high-side sensing architecture, 110kHz bandwidth at 100V/V gain, low 1.5Ω output impedance, and compatibility with deep-discharge battery systems down to 0V common-mode.
Technical Context
The MAX4372HEBT+TG45 implements a current-mirror-based high-side sensing topology with internal gain-setting resistors, eliminating external gain components. Its input stage operates with rail-to-rail common-mode capability (0V to 28V), decoupled from VCC, enabling direct connection to battery terminals during deep discharge without ground path interference.
It delivers a voltage output proportional to sensed current via RS+ and RS− terminals, with built-in clamping limiting VOUT to ≤12V. The device achieves ±0.18% full-scale accuracy at +25°C and maintains functional stability across −40°C to +85°C, supported by 75–85dB PSR and 85dB CMR for noise-immune operation in noisy DC/DC environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100V/V - sets full-scale sense voltage to 100mV for 10V output swing |
| Supply Voltage Range | 2.7V to 28V - supports single-supply operation across Li-ion, multi-cell, and industrial rails |
| Input Common-Mode Range | 0V to 28V - enables direct high-side sensing on battery anode, even at 0V under deep discharge |
| Full-Scale Accuracy | ±0.18% - ensures <±180μV error at 100mV VSENSE, critical for battery fuel gauging |
| Supply Current | 30μA - enables always-on current monitoring in ultra-low-power portable systems |
| Input Offset Voltage | ±1.3mV (TMIN to TMAX) - contributes <±1.3% error at 100mV VSENSE before gain scaling |
| −3dB Bandwidth | 110kHz - supports fast transient detection in load-switching and overcurrent protection |
| Output Impedance | 1.5Ω - drives ≥10kΩ ADC inputs directly without buffering |
Pinout & Package
MAX4372HEBT+TG45 is housed in a lead(Pb)-free, RoHS-compliant 3×2 UCSP package (1mm × 1.5mm, bump pitch 0.5mm), designated package code B6+2 per Maxim's outline no. 21-0097. This wafer-level chip-scale package supports high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RS+ | High-side sense input | Connects to battery/anode side of external sense resistor; withstands up to +30V absolute max |
| RS− | Load-side sense input | Connects to load side of sense resistor; differential input accepts ±0.3V max VRS+–VRS− |
| VCC | Positive supply | Power input (2.7V–28V); requires ≥0.1μF local decoupling capacitor |
| GND | Ground reference | Analog ground return; must be connected to system ground plane with low-inductance path |
| OUT | Voltage output | Gain-scaled output (VOUT = 100 × VSENSE); clamped to ≤12V, drives loads down to 4kΩ |
Key Features
| Feature | Design Value |
|---|---|
| Zero external gain components | Internal 100V/V gain eliminates need for external resistors-reducing BOM count and layout area |
| Deep-discharge compatible sensing | 0V–28V common-mode range independent of VCC allows monitoring of 2-cell Li-ion packs down to 0V terminal voltage |
| Micropower operation | 30μA quiescent current enables continuous battery current logging without compromising runtime |
| High-accuracy voltage output | 0.18% full-scale accuracy and 0.3mV offset enable sub-1% current measurement error in precision fuel gauging |
| Low-output-impedance driver | 1.5Ω output resistance permits direct interface to 12-bit SAR ADCs without buffer amplifiers |
| Robust ESD and overvoltage tolerance | RS+/RS− rated to ±30V; OUT rated to −0.3V to +15V-survives battery hot-plug and load-dump transients |
Applications
| Notebook Battery Monitoring | Smart-Battery Charger Interface |
|---|---|
Use Scenario: Real-time battery discharge current tracking in ultrabooks with dual-cell Li-ion packs. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring current flow from battery anode through sense resistor. Use Value: Enables accurate state-of-charge estimation down to 0V common-mode, supporting deep-discharge recovery algorithms. | Use Scenario: Bidirectional current monitoring in USB-C PD smart-charger modules with integrated fuel gauge. IC Role / Device Role / Timing Role: Voltage-output current sensor feeding analog input of charger IC or microcontroller ADC. Use Value: 100V/V gain and 110kHz bandwidth support fast charge termination and real-time overcurrent shutdown. |
| Portable Medical Device Power Management | Industrial IoT Sensor Node Battery Supervision |
Use Scenario: Continuous current logging in handheld ultrasound or glucose meters powered by coin-cell or Li-Po batteries. IC Role / Device Role / Timing Role: Micropower high-side monitor providing battery health data to embedded MCU via ADC. Use Value: 30μA supply current extends operational life; 0.18% accuracy ensures reliable low-current (<10mA) leakage detection. | Use Scenario: Long-life battery supervision in LoRaWAN or NB-IoT edge nodes deployed for 10+ years. IC Role / Device Role / Timing Role: Always-on current sensor detecting abnormal sleep-mode current spikes indicating firmware faults or sensor drift. Use Value: UCSP package minimizes board area; −40°C to +85°C rating ensures field reliability across outdoor temperature extremes. |
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 |
|---|---|---|---|
| MAX4080TASA+ | 20V/V gain, SO-8 package, 125kHz bandwidth, ±0.5mV offset | Lower gain limits full-scale current resolution; larger SO-8 footprint unsuitable for space-constrained UCSP designs | Select when lower gain and SO-8 mounting are acceptable, and higher offset tolerance is permissible |
| INA219BIDR | I²C digital output, integrated 12-bit ADC, 0.1% gain error, 26V max VCM | Digital interface adds MCU dependency; 26V common-mode ceiling excludes 28V battery systems | Select when digital bus integration and onboard ADC reduce system component count, and 26V VCM suffices |
Compared with MAX4372HEBT+TG45, MAX4080TASA+ offers higher bandwidth but lacks deep 0V–28V common-mode support and UCSP packaging; INA219BIDR provides digital convenience but sacrifices analog simplicity, 28V headroom, and micropower advantage-making MAX4372HEBT+TG45 optimal for analog, space-limited, deep-discharge battery monitoring.
Availability
MAX4372HEBT+TG45 is available at Aetrix Electronics and suitable for notebook battery management, smart-charger design, and portable medical device power supervision requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant UCSP packaging.
Supply support for MAX4372HEBT+TG45 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 high-reliability ICs for power, sensing, and communication applications.
The MAX4372 family was designed specifically for cost-sensitive, space-constrained high-side current sensing in battery-powered systems-emphasizing micropower operation, wide common-mode range, and voltage-output simplicity.
FAQ
What is the package type and dimensions of MAX4372HEBT+TG45?
MAX4372HEBT+TG45 uses a 3×2 UCSP (wafer-level chip-scale) package measuring 1.0mm × 1.5mm with 0.5mm bump pitch. It is RoHS-compliant and marked "ACZ" on top. This ultra-compact footprint enables high-density placement in thin-profile portable devices where SOT23 or SO packages are impractical. The package code is B6+2 per Maxim's outline no. 21-0097.
Does MAX4372HEBT+TG45 support true 0V common-mode operation, and why does that matter?
Yes, MAX4372HEBT+TG45 supports 0V to 28V input common-mode range independent of supply voltage-verified across −40°C to +85°C. This enables accurate current measurement even when a 2-cell Li-ion battery discharges to 0V at its terminals, a critical capability for fuel-gauging algorithms and safe deep-discharge recovery. Unlike many competitors, it remains functional below 2V common-mode.
What is the full-scale accuracy specification for MAX4372HEBT+TG45, and under what conditions is it guaranteed?
MAX4372HEBT+TG45 guarantees ±0.18% full-scale accuracy at TA = +25°C, with VSENSE = 100mV, VCC = 12V, and VRS+ = 12V. Over full temperature range (−40°C to +85°C), accuracy degrades to ±3%, as specified in the Electrical Characteristics table. This high baseline accuracy directly translates to <±180μV error at full-scale sense voltage, essential for precision battery monitoring.
Can MAX4372HEBT+TG45 drive an ADC input directly, and what is its output drive capability?
Yes, MAX4372HEBT+TG45 can drive most 12-bit SAR ADC inputs directly due to its low 1.5Ω output impedance and 10V full-scale output swing. It sources/sinks up to ±500μA while maintaining linearity, supporting RLOAD ≥ 4kΩ (for 100V/V gain). No external buffer is needed for typical microcontroller ADCs with ≥10kΩ input impedance, simplifying signal chain design.
How does the 100V/V gain version (H) of MAX4372 differ from the T (20V/V) and F (50V/V) versions in practical use?
The H version (MAX4372HEBT+TG45) delivers 100× amplification of VSENSE, yielding 10V output at 100mV sense voltage-ideal for maximizing ADC resolution with low-current sensing (e.g., 10mA through 10mΩ yields 100mV). Compared to T/F versions, it trades bandwidth (110kHz vs. 275/200kHz) and slightly higher offset sensitivity for superior small-signal resolution, making it optimal for precision battery monitoring rather than high-speed transient detection.
MAX4372HEBT+TG45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-WFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 110 kHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 30µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 28 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-UCSP (1x1.52)
MAX4372HEBT+TG45 FAQ
1.How can I place an order for MAX4372HEBT+TG45 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4372HEBT+TG45 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 MAX4372HEBT+TG45 reliable?
The price and inventory of MAX4372HEBT+TG45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4372HEBT+TG45 is usually 5 days.
3.What payment methods are accepted for MAX4372HEBT+TG45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4372HEBT+TG45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4372HEBT+TG45?
MAX4372HEBT+TG45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4372HEBT+TG45 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 MAX4372HEBT+TG45?
For technical support, including MAX4372HEBT+TG45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4372HEBT+TG45 requirements.
6.How does Aetrix verify that MAX4372HEBT+TG45 is sourced from the original manufacturer or authorized distributors?
All MAX4372HEBT+TG45 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 MAX4372HEBT+TG45 meets industry standards.
7.What is the process for return or replacement of MAX4372HEBT+TG45?
All MAX4372HEBT+TG45 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4372HEBT+TG45, 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 MAX4372HEBT+TG45 part is unused and in its original packaging.
Return procedure for MAX4372HEBT+TG45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4372HEBT+TG45 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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