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Analog Devices Inc./Maxim Integrated MAX4211CETE
- Part No.:
- MAX4211CETE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX4211CETE.pdf
- Description:
- IC CURRENT MONITOR 0.5% 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:833
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Product details
Overview
MAX4211CETE from Maxim Integrated is a high-side current and power monitor IC featuring integrated 1.21V bandgap reference, two open-drain comparators, and 40.96V/V current-sense gain. It delivers analog outputs proportional to load current (IOUT) and power (POUT), supports 4V–28V common-mode input range, operates from +2.7V to +5.5V supply, and targets battery-powered systems requiring real-time overload detection.
For engineers reviewing the MAX4211CETE datasheet, MAX4211CETE pinout, MAX4211CETE application, or MAX4211CETE equivalent, this device is selected for high-accuracy, high-side sensing in smart battery packs, circuit-breaker protection, and power-level monitoring where ground-path integrity and dual-threshold detection are critical.
Technical Context
The MAX4211CETE integrates a precision high-side current-sense amplifier with 40.96V/V gain, a stable 1.21V reference, and two independent comparators with 5mV hysteresis and 0.2V–(VCC−1.15V) common-mode input range. Its POUT output multiplies VSENSE × VRS+ with 1.64 1/V power gain, enabling direct power measurement without external multipliers.
It uses internal resistor-divider networks (25:1) for simplified design, supports latch-enable (LE) and inhibit control, and features comparator outputs rated to 28V - suitable for driving high-side MOSFETs in breaker applications. The device achieves ±1.5% max current-sense accuracy and ±1.5% max power-sense accuracy over −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current-Sense Gain | 40.96V/V - enables high-resolution current measurement with 100mV full-scale sense voltage |
| Power-Sense Gain | 1.64 1/V - provides linear POUT = 1.64 × VSENSE × VRS+ scaling for direct power readout |
| Reference Voltage | 1.21V ±10mV - stable internal bandgap reference for comparator thresholds and calibration |
| Supply Voltage Range | +2.7V to +5.5V - compatible with single Li-ion or dual-cell battery systems |
| Common-Mode Input Range | +4V to +28V - supports high-side sensing across wide input rail voltages |
| Comparator Outputs | Open-drain, 28V-tolerant - allows direct interface to external high-voltage switches or logic |
| Accuracy (Current) | ±1.5% max - guaranteed total error including gain, offset, and temperature drift |
| Bandwidth | 220kHz - sufficient for fast transient response in overload and short-circuit detection |
Pinout & Package
MAX4211CETE is housed in a 16-pin TSSOP package (4mm × 4mm, 0.65mm pitch) with exposed thermal pad. Pin functions are validated per Maxim's official datasheet revision 1 (May 2005).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Primary return path for all analog and digital circuitry; must be low-impedance connection |
| VCC | Power supply input | +2.7V to +5.5V supply; requires local 0.1µF bypass capacitor to GND |
| RS+ | High-side sense resistor input | Connects to power rail side of sense resistor; handles up to +28V common-mode |
| RS− | Load-side sense resistor input | Connects to load side of sense resistor; differential input with ±5V max swing |
| IOUT | Current-proportional output | Analog voltage = 40.96 × VSENSE; drives 1MΩ load with <0.5Ω output impedance |
| POUT | Power-proportional output | Analog voltage = 1.64 × VSENSE × VRS+; full-scale ~4.1V at VSENSE=100mV, VRS+=25V |
| REF | 1.21V reference output | Stable, buffered reference for comparator inputs or external circuit calibration |
| CIN1+, CIN1− | Comparator 1 inputs | Differential inputs referenced to REF; support programmable overpower/overcurrent thresholds |
| CIN2+, CIN2− | Comparator 2 inputs | Second independent differential pair for redundant or multi-level fault detection |
| COUT1, COUT2 | Comparator open-drain outputs | Active-low outputs; pull-up required; tolerate up to 28V for high-side switch control |
| LE | Latch-enable input | Active-high logic input; latches comparator outputs when asserted |
| INHIBIT | Functional disable input | Active-high input; disables IOUT/POUT outputs and comparators to reduce quiescent current |
| N.C. | No connection | Pins 3, 12, 13, 14, 15 - not bonded; leave unconnected and unpopulated on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.21V reference | Provides stable, temperature-compensated threshold source for both comparators without external components |
| Dual open-drain comparators | Enable independent overpower and overcurrent detection with 28V-tolerant outputs for direct MOSFET gate drive |
| 40.96V/V current gain | Maximizes signal-to-noise ratio for low-value sense resistors (e.g., 10mΩ at 1A yields 100mV input) |
| Real-time analog power output | Eliminates need for external multiplier IC or microcontroller-based computation of V × I |
| −40°C to +85°C operation | Validated performance across industrial temperature range without derating or external compensation |
| 220kHz bandwidth | Supports sub-5µs overload response time - critical for protecting lithium batteries and power rails |
Applications
| Overpower Circuit Breaker | Smart Battery Pack Monitoring |
|---|---|
|
Use Scenario: Detecting excessive power draw in DC distribution systems to trigger automatic shutdown before thermal damage occurs. IC Role / Device Role / Timing Role: MAX4211CETE continuously computes instantaneous load power via POUT and compares against fixed thresholds using its dual comparators. Use Value: Enables hardware-level, sub-10µs response to overpower events - faster than MCU-based solutions and immune to software latency or reset failures. |
Use Scenario: Real-time monitoring of charge/discharge current and power in portable Li-ion battery packs with embedded protection. IC Role / Device Role / Timing Role: MAX4211CETE measures high-side current (IOUT) and power (POUT), feeds REF to fuel gauge ICs, and triggers COUT1/COUT2 for cell-balancing or FET cutoff. Use Value: Maintains accurate state-of-charge estimation while preserving ground integrity - no shunt in battery return path compromises safety or measurement fidelity. |
| Short-Circuit Protection | Power-Supply Display Interface |
|
Use Scenario: Rapid detection of near-zero-impedance faults in 12V/24V automotive or industrial power supplies. IC Role / Device Role / Timing Role: MAX4211CETE senses sudden VSENSE rise via RS+/RS−, generates fast IOUT step, and asserts COUT1 within 4µs propagation delay to shut down upstream PMOS. Use Value: Achieves <10µs total fault-to-shutdown latency - prevents fuse blowing and protects downstream capacitors from catastrophic failure. |
Use Scenario: Providing calibrated analog outputs for front-panel meters or ADCs in programmable lab power supplies. IC Role / Device Role / Timing Role: MAX4211CETE delivers ratiometric IOUT and POUT signals scaled to standard 0–5V ranges, referenced to its internal 1.21V REF for consistent ADC conversion. Use Value: Eliminates need for external gain/offset calibration; ±1.5% accuracy ensures display reads match actual load conditions without firmware correction. |
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 | 25.00V/V current gain, 1.00 1/V power gain - lower sensitivity, reduced output swing at same VSENSE | Better suited for higher-current, lower-precision applications where 100mV sense voltage is impractical | Select MAX4211BETE when using >20mΩ sense resistors or when POUT full-scale must exceed 5V |
| MAX4211AETE | 16.67V/V current gain, 0.667 1/V power gain - lowest gain option, highest noise immunity | Preferred for noisy environments or high-current (>10A) systems where VSENSE exceeds 150mV | Choose MAX4211AETE for robustness in EMI-heavy industrial motor drives or when minimizing gain-related offset error is critical |
Compared with MAX4211BETE and MAX4211AETE, the MAX4211CETE provides highest current-sense resolution for low-power systems - its 40.96V/V gain enables accurate sub-amp measurements with minimal IR drop, making it optimal for battery management and portable electronics where sense resistor power loss must be minimized.
Availability
MAX4211CETE is available at Aetrix Electronics and suitable for smart battery packs, industrial circuit breakers, and power-supply instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4211CETE 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.
The MAX4211 series was developed specifically for high-side current and power monitoring in space-constrained, battery-sensitive systems - emphasizing accuracy, integration, and fault-response speed without compromising ground-path integrity.
FAQ
What is the maximum common-mode voltage supported by the MAX4211CETE?
The MAX4211CETE supports a +4V to +28V common-mode input range at the RS+ pin. This allows direct high-side sensing on 12V, 24V, and 28V rails without level-shifting circuitry. The specification is guaranteed over the full −40°C to +85°C temperature range and applies to both current and power measurement paths in the MAX4211CETE.
Does the MAX4211CETE require external resistors for gain setting?
No, the MAX4211CETE does not require external resistors for gain setting. It incorporates an internal 25:1 resistor-divider network optimized for its 40.96V/V current gain and 1.64 1/V power gain. This eliminates external components, reduces board area, and improves accuracy by avoiding tolerance stack-up - a key differentiator from the MAX4210D/E/F variants that rely on external dividers.
How does the MAX4211CETE handle overvoltage conditions on its comparator outputs?
The MAX4211CETE's COUT1 and COUT2 pins are open-drain outputs rated to withstand up to +28V on the pull-up side. This allows direct connection to high-side NMOS or PMOS gates without level shifters. When active, each output sinks ≥1mA at ≤0.6V (VOL), and leakage remains ≤1µA when pulled to 28V - ensuring reliable interfacing with external 12V/24V control logic in the MAX4211CETE.
What is the accuracy specification for power measurement in the MAX4211CETE?
The MAX4211CETE guarantees ±1.5% maximum total power-sense accuracy over −40°C to +85°C. This includes combined errors from gain nonlinearity, offset voltage (≤30mV at VSENSE=0V), power-supply rejection (≥52dB), and common-mode rejection (≥60dB). Accuracy is specified under standard test conditions: VSENSE = 10mV–100mV, VRS+ = 5V–25V, and VCC = 2.7V–5.5V - all verified for the MAX4211CETE.
Can the MAX4211CETE operate from a single-cell Li-ion battery?
Yes, the MAX4211CETE operates from +2.7V to +5.5V, fully covering the discharge range of a single-cell Li-ion battery (≈4.2V fully charged to ≈2.7V depleted). Its 670µA typical supply current at VCC = +5.5V and 960µA max ensures minimal impact on battery runtime. The INHIBIT pin further reduces current to standby levels during idle periods - a critical feature for always-on monitoring in the MAX4211CETE.
MAX4211CETE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for MAX4211CETE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4211CETE 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 reliable?
The price and inventory of MAX4211CETE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4211CETE is usually 5 days.
3.What payment methods are accepted for MAX4211CETE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4211CETE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4211CETE?
MAX4211CETE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4211CETE 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?
For technical support, including MAX4211CETE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4211CETE requirements.
6.How does Aetrix verify that MAX4211CETE is sourced from the original manufacturer or authorized distributors?
All MAX4211CETE 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 meets industry standards.
7.What is the process for return or replacement of MAX4211CETE?
All MAX4211CETE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4211CETE, 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 part is unused and in its original packaging.
Return procedure for MAX4211CETE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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