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Analog Devices Inc./Maxim Integrated MAX4211CETE+T
- Part No.:
- MAX4211CETE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX4211CETE+T.pdf
- Description:
- IC CURRENT MONITOR 0.5% 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,245
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Product details
Overview
MAX4211CETE+T from Maxim Integrated is a full-featured high-side current and power monitor IC with integrated 1.21V bandgap reference, two open-drain comparators, and 40.96V/V current-sense gain. It delivers real-time analog outputs for load current (IOUT) and power (POUT), supports +4V to +28V input source voltage, operates from +2.7V to +5.5V supply, and achieves ±1.5% max current-sense accuracy. It is used in smart battery chargers and overpower circuit-breaker protection systems.
For engineers reviewing the MAX4211CETE+T datasheet, MAX4211CETE+T pinout, MAX4211CETE+T application, or MAX4211CETE+T equivalent, key selection criteria include its 40.96V/V current gain option, 1.21V reference output, dual comparator thresholds for overcurrent/overpower detection, and compatibility with high-side sensing in battery-powered systems without ground path disruption.
Technical Context
The MAX4211CETE+T integrates a precision high-side current-sense amplifier, a stable 1.21V bandgap reference, and two uncommitted comparators with open-drain outputs rated up to 28V. Its multiplier architecture computes POUT = VSENSE × VRS+ × GAIN, where GAIN = 1.64 (1/V) for the 'C' variant.
It features 220kHz bandwidth on both IOUT and POUT paths, 60–80dB common-mode rejection over 4V–28V RS+ range, and operates across –40°C to +85°C. The comparators support independent threshold setting using the internal reference and exhibit 4µs propagation delay with 5mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current-Sense Gain | 40.96V/V - sets IOUT = 40.96 × VSENSE; enables high-resolution current measurement with 100mV full-scale sense voltage |
| Power-Sense Gain | 1.64 (1/V) - defines POUT = 1.64 × VSENSE × VRS+; provides direct analog power output scalable with supply voltage |
| Reference Voltage | 1.21V ±10mV (–40°C to +85°C) - stable internal reference for comparator thresholds and system calibration |
| Supply Voltage Range | +2.7V to +5.5V - compatible with single Li-ion or dual-cell battery systems and standard 3.3V/5V rails |
| Input Common-Mode Range | +4V to +28V at RS+ - supports high-side sensing in 12V/24V industrial, automotive, and telecom power rails |
| Accuracy (Current) | ±1.5% max total error - includes gain, offset, and temperature drift; ensures reliable overload detection without recalibration |
| Bandwidth | 220kHz - supports fast transient response for short-circuit detection and dynamic load monitoring |
Pinout & Package
MAX4211CETE+T is housed in a 16-pin 4mm × 4mm thin QFN package with exposed paddle (EP) for thermal performance. Pin numbering follows standard QFN convention with pin 1 marked by dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 13, 14, 15, 16 | GND | Ground connection; all pins tied internally to common die substrate; EP must be soldered to PCB ground plane |
| 5 | VCC | Positive supply input (+2.7V to +5.5V); requires local 0.1µF ceramic bypass capacitor to GND |
| 6 | RS+ | High-side input to current-sense amplifier; connects to external sense resistor's power-rail side and internal divider |
| 7 | RS− | Load-side input to current-sense amplifier; connects to external sense resistor's load side |
| 8 | IOUT | Analog current-proportional output (40.96×VSENSE); rail-to-rail capable, drives 1MΩ load |
| 9 | POUT | Analog power-proportional output (1.64×VSENSE×VRS+); rail-to-rail, low-output impedance (0.5Ω) |
| 10 | REF | 1.21V reference output; supplies comparator thresholds and external circuitry; sinks/supplies ≤100µA |
| 11 | CIN1+ | Non-inverting input of comparator 1; typically connected to REF or external threshold |
| 12 | CIN1− | Inverting input of comparator 1; accepts IOUT or POUT for overload detection |
| 17 | CIN2+ | Non-inverting input of comparator 2; configurable for secondary threshold (e.g., overvoltage) |
| 18 | CIN2− | Inverting input of comparator 2; accepts alternate signal (e.g., VRS+ or VIN) |
| 19 | COUT1 | Open-drain output of comparator 1; pulls low when CIN1+ > CIN1−; supports 28V pull-up |
| 20 | COUT2 | Open-drain output of comparator 2; independent logic-level alert for second fault condition |
| 21 | LE | Latch-enable input; active-high pulse latches comparator outputs to prevent spurious resets |
| 22 | INHIBIT | Active-low enable; disables IOUT/POUT and comparators to reduce quiescent current to <1µA |
Key Features
| Feature | Design Value |
|---|---|
| Real-time analog power output | POUT directly proportional to instantaneous load power (VSENSE × VRS+ × 1.64), enabling true RMS-equivalent monitoring without digital computation |
| Dual independent comparators | Two open-drain outputs with 28V tolerance allow separate overpower and overcurrent latching alerts without external level-shifting |
| Integrated 1.21V reference | Stable, low-drift reference eliminates need for external precision voltage source when configuring comparator thresholds |
| High-side sensing architecture | Measures current without disrupting load ground path-critical for battery management and isolated power systems |
| Low quiescent current | 670µA typical supply current (at +5.5V) enables always-on monitoring in energy-sensitive portable applications |
Applications
| Smart Battery Charger Monitoring | Overpower Circuit Breaker |
|---|---|
|
Use Scenario: Real-time tracking of charge current and instantaneous power delivered to Li-ion packs during CC/CV charging cycles. IC Role / Device Role / Timing Role: High-side current/power monitor providing analog IOUT and POUT signals to MCU ADC for closed-loop control and safety cutoff. Use Value: Enables precise end-of-charge detection and thermal derating via 40.96V/V gain and ±1.5% accuracy-reducing reliance on software compensation. |
Use Scenario: Automatic disconnection of 24V DC loads upon detecting sustained >100W dissipation in industrial control cabinets. IC Role / Device Role / Timing Role: Power-monitoring front-end feeding POUT into comparator CIN1−, with REF as threshold; COUT1 drives gate driver for high-side MOSFET switch. Use Value: Eliminates external op-amps and references; 220kHz bandwidth ensures <15µs response to sudden overload events. |
| Short-Circuit Protection | Power-Supply Display |
|
Use Scenario: Sub-100µs trip response to 50A short-circuit on a 12V automotive ECU power rail. IC Role / Device Role / Timing Role: Current-sense amplifier driving IOUT to comparator CIN2−; CIN2+ biased to REF × 2 for 200mV threshold; COUT2 triggers shutdown logic. Use Value: 40.96V/V gain converts 5mV sense drop to 205mV output-enabling robust noise margin and sub-microsecond comparator propagation (4µs). |
Use Scenario: Analog bar-graph display of real-time power draw on a programmable lab bench supply (0–30V, 0–5A). IC Role / Device Role / Timing Role: POUT output scaled to drive LED driver or DAC input; REF provides stable scaling reference for display calibration. Use Value: Direct analog power output avoids ADC sampling delays and firmware overhead-delivering flicker-free, continuous display updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side power monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4211BETE+T | 25.00V/V current gain (vs. 40.96V/V); 1.00 (1/V) power gain (vs. 1.64) | Better suited for higher sense voltages (>100mV); lower gain reduces sensitivity to noise in high-current systems | Select when VSENSE ≥ 100mV and system prioritizes noise immunity over resolution at low currents |
| MAX4211AETE+T | 16.67V/V current gain; 0.667 (1/V) power gain; same package and reference/comparator features | Optimized for very high current ranges (e.g., >50A with 5mΩ shunt); reduced gain minimizes output saturation risk | Choose for high-power motor drives where POUT must remain linear up to 28V RS+ with large VSENSE excursions |
Compared with MAX4211BETE+T and MAX4211AETE+T, the MAX4211CETE+T provides highest current-sense gain for maximum resolution at low load currents (e.g., 10mA–1A), making it optimal for battery fuel gauging and low-power system health monitoring where 100mV full-scale sensing is preferred.
Availability
MAX4211CETE+T is available at Aetrix Electronics and suitable for smart battery packs, overpower circuit breakers, and short-circuit protection systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MAX4211CETE+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 management, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX4211 series was developed specifically for high-side real-time power and current monitoring in space-constrained, battery-sensitive systems-emphasizing integration of reference, comparators, and multiplier functions in a single 16-pin QFN.
FAQ
What is the current-sense gain of the MAX4211CETE+T?
The MAX4211CETE+T has a fixed current-sense amplifier gain of 40.96V/V. This means its IOUT pin delivers an analog voltage equal to 40.96 times the differential voltage across the external sense resistor (VSENSE). This high gain enables accurate low-current measurement down to milliamp levels using standard 100mV full-scale shunts, and is confirmed in the Electrical Characteristics table under "Current-Sense Amplifier Gain" for MAX4211C/F variants.
Does the MAX4211CETE+T include an internal voltage reference?
Yes, the MAX4211CETE+T integrates a precision 1.21V bandgap reference accessible at the REF pin. It exhibits ±10mV tolerance over –40°C to +85°C and supports sink/source currents up to 100µA. This reference is used internally by the two comparators and can also drive external circuitry, eliminating the need for an external reference in most overload-detection designs.
How does the MAX4211CETE+T support overpower detection?
The MAX4211CETE+T supports overpower detection via its POUT output, which delivers a voltage proportional to load power (VSENSE × VRS+ × 1.64). This analog signal can be fed into either comparator input (e.g., CIN1−), while the other input (CIN1+) is biased using the internal 1.21V reference or a resistor divider. When POUT exceeds the threshold, COUT1 asserts low-enabling direct control of external protection circuitry.
What is the operating temperature range of the MAX4211CETE+T?
The MAX4211CETE+T is specified for operation from –40°C to +85°C ambient temperature. This extended industrial temperature range is explicitly stated in the General Description and confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. All key parameters-including gain accuracy, reference voltage, and comparator performance-are guaranteed across this full range.
Can the MAX4211CETE+T be used with a 24V supply rail?
Yes, the MAX4211CETE+T supports input common-mode voltages up to +28V at the RS+ pin, making it fully compatible with 24V systems. Its high-side architecture allows direct sensing on the 24V rail without ground-path interference, and its +4V to +28V common-mode input range is verified in the Electrical Characteristics table under "Common-Mode Input Range" with test conditions up to VRS+ = 25V.
MAX4211CETE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Current Monitor
- Sensing Method:
- High-Side
- Accuracy:
- ±0.5%
- Voltage - Input:
- 4V ~ 28V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
MAX4211CETE+T FAQ
1.How can I place an order for MAX4211CETE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4211CETE+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 MAX4211CETE+T reliable?
The price and inventory of MAX4211CETE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4211CETE+T is usually 5 days.
3.What payment methods are accepted for MAX4211CETE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4211CETE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4211CETE+T?
MAX4211CETE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4211CETE+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 MAX4211CETE+T?
For technical support, including MAX4211CETE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4211CETE+T requirements.
6.How does Aetrix verify that MAX4211CETE+T is sourced from the original manufacturer or authorized distributors?
All MAX4211CETE+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 MAX4211CETE+T meets industry standards.
7.What is the process for return or replacement of MAX4211CETE+T?
All MAX4211CETE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4211CETE+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 MAX4211CETE+T part is unused and in its original packaging.
Return procedure for MAX4211CETE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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