High-Side Power and Current Monitors

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The MAX4210/MAX4211 low-cost, low-power, high-side power/current monitors provide an analog output voltage proportional to the power consumed by a load by multiplying load current and source voltage. The MAX4210/MAX4211 measure load current by using a high-side current-sense amplifier, making them especially useful in battery-powered systems by not interfering with the ground path of the load.

The MAX4210 is a small, simple 6-pin power monitor intended for limited board space applications. The MAX4210A/B/C integrate an internal 25:1 resistor-divider network to reduce component count. The MAX4210D/E/F use an external resistor-divider network for greater design flexibility.

The MAX4211 is a full-featured current and power monitor. The device combines a high-side current-sense amplifier, 1.21V bandgap reference, and two comparators with open-drain outputs to make detector circuits for overpower, overcurrent, and/or overvoltage conditions. The open-drain outputs can be connected to potentials as high as 28V, suitable for driving high-side switches for circuit-breaker applications.

Both the MAX4210/MAX4211 feature three different current- sense amplifier gain options: 16.67V/V, 25.00V/V, and 40.96V/V. The MAX4210 is available in 3mm x 3mm, 6-pin TDFN and 8-pin µMAX® packages and the MAX4211 is available in 4mm x 4mm, 16-pin thin QFN and 16-pin TSSOP packages. Both parts are specified for the -40°C to +85°C extended operating temperature range.
MAX4210, MAX4211: Typical Operating Circuit MAX4210, MAX4211: Typical Operating Circuit Enlarge+

Key Features

  • Real-Time Current and Power Monitoring
  • ±1.5% (max) Current-Sense Accuracy
  • ±1.5% (max) Power-Sense Accuracy
  • Two Uncommitted Comparators (MAX4211)
  • 1.21V Reference Output (MAX4211)
  • Three Current/Power Gain Options
  • 100mV/150mV Current-Sense Full-Scale Voltage
  • +4V to +28V Input Source Voltage Range
  • +2.7V to +5.5V Power-Supply Voltage Range
  • Low Supply Current: 380µA (MAX4210)
  • 220kHz Bandwidth
  • Small 6-Pin TDFN and 8-Pin µMAX Packages (MAX4210)


  • Baseband Analog Multipliers
  • Measurement Instrumentation
  • Overpower Circuit Breakers
  • Power-Level Detectors
  • Power-Supply Displays
  • Short-Circuit Protection
  • Smart Battery Packs/Chargers
  • Smart Peripheral Control
  • VGA Circuits
Part NumberOutput FormatCMVR
Bi-Dir. Curr. SenseVSENSE_FS
GainGain Accuracy @25°C
ReferenceOper. Temp.
minmaxminmaxtyprecomm.max@ -3dBSee Notes
MAX4211 Voltage4282.75.5670No
16.67 V/V
25 V/V
40.96 V/V
1.52202Bandgap-40 to +85
$1.68 @1k
MAX4210 3800-
$1.13 @1k
See All Current Sense Amplifiers (51)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX4210EEVKIT: Evaluation Kit for the MAX4210E, MAX4210A, MAX4210B, MAX4210C, MAX4210D, and MAX4210F
MAX4211EEVKIT: Evaluation Kit for the MAX4211A, MAX4211B, MAX4211C, MAX4211D, MAX4211E, and MAX4211F
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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