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.
Key Features
Applications/Uses
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)
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 prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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