MAX4210/MAX4211 19-3285 Rev 1 5/05 High-Side Power and Current Monitors General Description Features The MAX4210/MAX4211 low-cost, low-power, high-side Real-Time Current and Power Monitoring power/current monitors provide an analog output volt- 1.5% (max) Current-Sense Accuracy age proportional to the power consumed by a load by 1.5% (max) Power-Sense Accuracy multiplying load current and source voltage. The MAX4210/MAX4211 measure load current by using a Two Uncommitted Comparators (MAX4211) high-side current-sense amplifier, making them espe- 1.21V Reference Output (MAX4211) cially useful in battery-powered systems by not interfer- Three Current/Power Gain Options ing with the ground path of the load. 100mV/150mV Current-Sense Full-Scale Voltage The MAX4210 is a small, simple 6-pin power monitor +4V to +28V Input Source Voltage Range intended for limited board space applications. The MAX4210A/B/C integrate an internal 25:1 resistor-divider +2.7V to +5.5V Power-Supply Voltage Range network to reduce component count. The MAX4210D/E/F Low Supply Current: 380A (MAX4210) use an external resistor-divider network for greater design 220kHz Bandwidth flexibility. Small 6-Pin TDFN and 8-Pin MAX Packages The MAX4211 is a full-featured current and power mon- (MAX4210) itor. The device combines a high-side current-sense amplifier, 1.21V bandgap reference, and two compara- Ordering Information tors with open-drain outputs to make detector circuits for overpower, overcurrent, and/or overvoltage condi- TOP PART TEMP RANGE PIN-PACKAGE tions. The open-drain outputs can be connected to MARK potentials as high as 28V, suitable for driving high-side 6 TDFN-6-EP* MAX4210AETT-T -40C to +85C AHF switches for circuit-breaker applications. (3mm x 3mm) Both the MAX4210/MAX4211 feature three different cur- MAX4210AEUA -40C to +85C 8 MAX rent-sense amplifier gain options: 16.67V/V, 25.00V/V, and *EP = Exposed paddle. 40.96V/V. The MAX4210 is available in 3mm x 3mm, 6-pin Ordering Information continued at end of data sheet. TDFN and 8-pin MAX packages and the MAX4211 is available in 4mm x 4mm, 16-pin thin QFN and 16-pin Functional Diagrams TSSOP packages. Both parts are specified for the -40C to +85C extended operating temperature range. VSENSE + - R Applications SENSE 4V TO + 28V - LOAD RS+ RS- Overpower Circuit Breakers V CC + 2.7V TO Smart Battery Packs/Chargers 5.5V - Smart Peripheral Control IOUT 25:1 Short-Circuit Protection POUT Power-Supply Displays REF 1.21V Measurement Instrumentation REFERENCE Baseband Analog Multipliers INHIBIT CIN1+ VGA Circuits COUT1 CIN1- LE Power-Level Detectors CIN2+ COUT2 MAX is a registered trademark of Maxim Integrated Products, Inc. CIN2- MAX4211A MAX4211B MAX4211C GND Pin Configurations and Selector Guide appear at end of data sheet. Functional Diagrams continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KITS AVAILABLEHigh-Side Power and Current Monitors ABSOLUTE MAXIMUM RATINGS V , IN, CIN1, CIN2 to GND....................................-0.3V to +6V 8-Pin MAX (derate 4.5mW/C above +70C) .............362mW CC RS+, RS-, INHIBIT, LE, COUT1, COUT2 to GND ...-0.3V to +30V 16-Pin TSSOP (derate 9.4mW/C above +70C) ..........754mW IOUT, POUT, REF to GND..........................-0.3V to (V + 0.3V) 16-Pin Thin QFN (derate 25mW/C above +70C) .....2000mW CC Differential Input Voltage (V - V ) .................................5V Operating Temperature Range ...........................-40C to +85C RS+ RS- Maximum Current into Any Pin..........................................10mA Junction Temperature......................................................+150C Output Short-Circuit Duration to V or GND ........................10s Storage Temperature Range .............................-65C to +150C CC Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 6-Pin TDFN (derate 24.4mW/C above +70C) ..........1951mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 5.0V, V = 25V, V = 5mV, V = 1.0V, V = 0V, R = R = 1M , V = V = V , V = V = CC RS+ SENSE IN LE IOUT POUT CIN1+ CIN2+ REF CIN1- CIN2- GND, V = 0V, R = R = 5k connected to V , T = -40C to +85C, unless otherwise noted. Typical values are at INHIBIT COUT1 COUT2 CC A T = +25C, unless otherwise noted.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range V 2.7 5.5 V CC (Note 2) Common-Mode Input Range V Measured at RS+ 4 28 V CMR (Note 3) MAX4210 380 570 T = +25C, A V = +5.5V CC MAX4211 670 960 Supply Current I A CC MAX4210 670 V = +5.5V CC MAX4211 1100 MAX421 A/B/C 14 25 I V = 0mV RS+ SENSE Input Bias Current MAX421 D/E/F 3 8 A I V = 0mV 3 8 RS- SENSE IN Input Bias Current I MAX421 D/E/F -0.1 -1 A IN Leakage Current I , I V = 0V 0.1 1 A RS+ RS- CC MAX421 A/B/D/E 150 V Full-Scale Voltage SENSE V mV SENSE FS (Note 4) MAX421 C/F 100 IN Full-Scale Voltage MAX421 D/E/F, V = 10mV to SENSE V 1V IN FS (Note 4) 100mV IN Input Voltage Range MAX421 D/E/F, V = 10mV to SENSE V 0.16 1.10 V IN (Note 5) 100mV V Full-Scale Voltage MAX421 A/B/C, V = 10mV to RS+ SENSE 25 V (Note 4) 100mV V Input Voltage Range MAX421 A/B/C, V = 10mV to RS+ SENSE V 428V RS+ (Note 5) 100mV Current into IOUT = 10A 1.5 V = SENSE Current into IOUT = 100A 2.5 80 Minimum IOUT/POUT Voltage V 0V, V = mV OUT MIN RS+ Current into POUT = 10A 1.5 25V C ur r ent int o PO U T = 100A 2.5 80 Current out of V - CC V = SENSE IOUT = 500A 0.25 Maximum IOUT/POUT Voltage V V OUT MAX 300mV, (Note 6) Current out of V - CC V = 25V RS+ POUT = 500A 0.25 2 MAX4210/MAX4211