9-3285; Rev 1; 5/05 KITS ATION EVALU ABLE AVAIL High-Side Power and Current Monitors 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.
MAX4210/MAX4211 High-Side Power and Current Monitors ABSOLUTE MAXIMUM RATINGS VCC, IN, CIN1, CIN2 to GND ....................................-0.3V to +6V RS+, RS-, INHIBIT, LE, COUT1, COUT2 to GND ...-0.3V to +30V IOUT, POUT, REF to GND ..........................-0.3V to (VCC + 0.3V) Differential Input Voltage (VRS+ - VRS-) .................................±5V Maximum Current into Any Pin..........................................±10mA Output Short-Circuit Duration to VCC or GND ........................
High-Side Power and Current Monitors (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Current-Sense Amplifier Gain SYMBOL VIOUT/ VSENSE VPOUT/ (VSENSE x VRS+) Power-Sense Amplifier Gain VPOUT/ (VSENSE x VIN) CONDITIONS MIN TYP MAX4211A/D 16.
MAX4210/MAX4211 High-Side Power and Current Monitors ELECTRICAL CHARACTERISTICS (continued) (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.
High-Side Power and Current Monitors (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.
MAX4210/MAX4211 High-Side Power and Current Monitors ELECTRICAL CHARACTERISTICS (continued) (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.
High-Side Power and Current Monitors (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.
MAX4210/MAX4211 High-Side Power and Current Monitors ELECTRICAL CHARACTERISTICS (continued) (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX ±0.5 ±1.5 ±0.5 ±1.5 UNITS MAX4210F/MAX4211F (power gain = 40.
High-Side Power and Current Monitors (VCC = 5.0V, VRS+ = 25V, VSENSE = 5mV, VIN = 1.0V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = GND, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX ±0.5 ±1.5 UNITS MAX4211B/MAX4211E (current gain = 25.
Typical Operating Characteristics (VCC = 5.0V, VRS+ = 25V, VSENSE = 100mV, VIN = 1V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = 0V, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. COMMON-MODE VOLTAGE 0.5 0.7 MAX4211 0.6 0.5 MAX4210 0.4 VSENSE = 5mV VCC = 5V 0.45 VCC = 5.5V VCC = 4.0V 0.40 0.35 0.30 VCC = 2.7V MAX4210 0.3 0.25 0.2 0.3 3.1 3.5 3.9 4.3 4.7 5.1 4 5.5 8 12 24 0.
High-Side Power and Current Monitors TA = +25°C -1.2 -1.4 0.2 0 -0.2 -0.6 -1.8 -0.8 -2.0 -1.0 25 50 75 100 125 TA = +25°C TA = +85°C -0.4 -1.6 0 10 16 19 22 -1.4 25 0 200 400 24.90 24.85 MAX4211E 24.90 24.85 24.80 85 1000 MAX4211D VSENSE = 100mV 2.0 1.5 VSENSE = 70mV VSENSE = 30mV 1.0 0.5 0 -40 -15 10 35 60 0 85 0.3 0.6 0.9 1.2 TEMPERATURE (°C) IN VOLTAGE (V) MULTIPLIER TRANSFER CHARACTERISTICS MULTIPLIER TRANSFER CHARACTERISTICS REFERENCE VOLTAGE vs.
Typical Operating Characteristics (continued) (VCC = 5.0V, VRS+ = 25V, VSENSE = 100mV, VIN = 1V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = 0V, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = +25°C, unless otherwise noted.) COMPARATOR PROPAGATION DELAY vs. OVERDRIVE VOLTAGE 1.210 1.205 1.4 1.2 1.0 0.8 0.6 0.4 1.8 MAX4210/11 toc21 1.6 PROPAGATION DELAY (µs) 1.215 MAX4210/11 toc20 1.8 MAX4210/11 toc19 REFERENCE VOLTAGE (V) 1.
High-Side Power and Current Monitors IOUT POWER-UP DELAY VCC POWER-UP/DOWN RESPONSE POUT MAX4210/11 toc28 MAX4211E MAX4210/11 toc29 5V VCC 2V/div VSENSE = 150mV MAX4211E VCC 2V/div 0V 0V 2.5V IOUT 1V/div POUT 2V/div 0V 0V 200µs/div 2ms/div VCC POWER-UP/DOWN RESPONSE IOUT RS POWER-UP/DOWN RESPONSE POUT MAX4210/11 toc30 MAX4210/11 toc31 VSENSE = 150mV MAX4211E 10V VRS+ 5V/div VCC 2V/div 0V VSENSE 0V 2.
Typical Operating Characteristics (continued) (VCC = 5.0V, VRS+ = 25V, VSENSE = 100mV, VIN = 1V, VLE = 0V, RIOUT = RPOUT = 1MΩ, VCIN1+ = VCIN2+ = VREF, VCIN1- = VCIN2- = 0V, VINHIBIT = 0V, RCOUT1 = RCOUT2 = 5kΩ connected to VCC, TA = +25°C, unless otherwise noted.
High-Side Power and Current Monitors -10 -20 PSR (dB) -50 -60 -40 15 10 -60 -80 5 -70 0 0.001 -80 10 1 0.1 100 1k 100k 10k VSENSE = 10mVP-P 30 25 20 10 VSENSE = 90mVP-P GAIN (dB) 20 15 15 10 10 5 5 0.01 0.1 1 0 0.001 10 0.01 1 0.1 FREQUENCY (MHz) FREQUENCY (MHz) IOUT LARGE-SIGNAL GAIN vs. FREQUENCY IN SMALL-SIGNAL GAIN vs. FREQUENCY 5 MAX4210/11 toc45 30 VSENSE = 90mVP-P 0 GAIN (dB) 20 15 -5 MAX4210/11 toc46 0 0.001 25 1 POUT LARGE-SIGNAL GAIN vs.
MAX4210/MAX4211 High-Side Power and Current Monitors MAX4210A/B/C Pin Description PIN 6 TDFN 8 µMAX NAME FUNCTION 1 1 GND Ground 2 2, 3, 6 N.C. No Connection. Not internally connected. 3 4 VCC Power-Supply Voltage. Connect a 0.1µF bypass capacitor from VCC to GND. 4 5 RS+ Power Connection to External-Sense Resistor and Internal Resistor-Divider 5 7 RS- Load-Side Connection for External-Sense Resistor 6 8 POUT EP — EP* Power Output Voltage.
High-Side Power and Current Monitors PIN NAME FUNCTION 16 THIN QFN 16 TSSOP 1 3 VCC Power-Supply Voltage. Connect a 0.1µF bypass capacitor from VCC to GND. 2 4 N.C. No Connection. Not internally connected. 3 5 LE 4 6 COUT1 Open-Drain Comparator 1 Output. LE and INHIBIT control the comparator 1 output. 5 7 INHIBIT INHIBIT for Comparator 1 Output. Driving logic high inhibits the comparator operation. Drive logic low for normal operation.
MAX4210/MAX4211 High-Side Power and Current Monitors MAX4211D/E/F Pin Description PIN NAME FUNCTION 16 THIN QFN 16 TSSOP 1 3 VCC 2 4 IN Multiplier Input Voltage. Voltage input for internal multiplier. 3 5 LE Latch Enable for Comparator 1. Driving logic low makes the comparator transparent (regular comparator). Driving logic high latches the output. 4 6 COUT1 Open-Drain Comparator 1 Output. Output controlled by LE and INHIBIT. INHIBIT for Comparator 1 Output.
High-Side Power and Current Monitors VSENSE + 4V TO 28V - RSENSE + - LOAD RS+ 4V TO 28V - RSENSE + - LOAD RS- RS+ VCC 2.7V TO 5.5V VSENSE + RS- VCC + - 2.7V TO 5.5V + - IOUT 25:1 IOUT IN POUT 0 TO 1V 1.21V REFERENCE INHIBIT POUT + - REF CIN1+ 1.
MAX4210/MAX4211 High-Side Power and Current Monitors The common-mode voltage range is +4V to +28V and independent of the supply voltage. With this feature, the device can monitor the output current of a high-voltage source while running at a lower system voltage typically between 2.7V and 5.5V. The MAX4211 has a current-sense amplifier output.
High-Side Power and Current Monitors Typical Operating Circuit + 4V TO 28V VSENSE - RSENSE + - LOAD RS+ RS- VCC 2.7V TO 5.5V + - C1 IOUT 25:1 POUT RP 1.21V REFERENCE R7 REF VPULLUP INHIBIT CIN1+ R3 R1 COUT1 CIN1- VPULLUP LE CIN2+ R6 R2 R4 COUT2 CIN2MAX4211A MAX4211B MAX4211C GND R5 ______________________________________________________________________________________ 21 MAX4210/MAX4211 the comparators’ inputs. This is the comparison reference voltage.
MAX4210/MAX4211 High-Side Power and Current Monitors Applications Information Recommended Component Values Ideally, the maximum load current develops the fullscale sense voltage across the current-sense resistor. Choose the gain version needed to yield the maximum current-sense amplifier output voltage without saturating it. The typical high-side saturation voltage is about VCC - 0.25V.
High-Side Power and Current Monitors 4V TO 28V VSENSE MAX4210/MAX4211 + - RSENSE + - LOAD RS+ RS- VCC 2.7V TO 5.5V + - IOUT 25:1 POUT 1.21V REFERENCE REF VPULLUP R1 INHIBIT CIN1+ COUT1 CIN1- R2 LE CIN2+ OVER/ UNDERPOWER R4 COUT2 CIN2MAX4211A MAX4211B MAX4211C GND R5 Figure 1.
MAX4210/MAX4211 High-Side Power and Current Monitors VSENSE + 4V TO 28V - M1 RSENSE + - LOAD R5 RS+ RS- VCC 2.7V TO 5.5V + - C1 IOUT 25:1 POUT R3 1.21V REFERENCE R4 INHIBIT REF R1 CIN1+ COUT1 CIN1- R2 LE CIN2+ COUT2 MANUAL RESET CIN2MAX4211A MAX4211B MAX4211C RESET (FROM µC) GND Figure 2.
High-Side Power and Current Monitors MAX4210/MAX4211 VCC MAX4210D/E/F RS+ POUT R2 OUTPUT RSIN VOUTPUT = VINPUT ✕ (R2/R1) ✕ AVPOUT ✕ VIN INPUT VIN GAIN CONTROL (0 TO 1V) R1 Figure 3. Single-Ended-Input, Variable-Gain Amplifier VSENSE + 4V TO 28V - RSENSE + RS+ RS- LOAD VCC 2.7V TO 5.5V + MAX4210D/E/F MAX4211D/E/F POUT IN GND Figure 4.
POWER GAIN (1/V) CURRENT/ POWER MEASUREMENT OUTPUT NO. OF COMPARATORS INTERNAL REFERENCE VOLTAGEMULTIPLIER INPUT (INTERNAL RESISTOR-DIVIDER/ EXTERNAL INPUT) FULL-SCALE VSENSE VOLTAGE (mV) Selector Guide CURRENT GAIN (V/V) MAX4210/MAX4211 High-Side Power and Current Monitors MAX4210AETT 6 TDFN — 0.667 P None N INT 150 MAX4210AEUA 8 µMAX — 0.667 P None N INT 150 MAX4210BETT 6 TDFN — 1.000 P None N INT 150 MAX4210BEUA 8 µMAX — 1.
High-Side Power and Current Monitors PART TEMP RANGE PIN-PACKAGE 6 TDFN-6-EP* (3mm x 3mm) MAX4210BETT -40°C to +85°C MAX4210BEUA -40°C to +85°C 8 µMAX MAX4210CETT -40°C to +85°C MAX4210CEUA -40°C to +85°C 8 µMAX MAX4210DETT -40°C to +85°C MAX4210DEUA -40°C to +85°C 8 µMAX MAX4210EETT -40°C to +85°C MAX4210EEUA -40°C to +85°C 8 µMAX MAX4210FETT -40°C to +85°C MAX4210FEUA -40°C to +85°C 8 µMAX MAX4211AETE -40°C to +85°C MAX4211AEUE -40°C to +85°C 16 TSSOP MAX4211BETE -40°C to +85°
High-Side Power and Current Monitors MAX4210/MAX4211 Pin Configurations POUT RS- RS+ TOP VIEW 6 5 4 MAX4210 1 1 8 2 7 RS- N.C. 3 6 N.C. VCC 4 5 RS+ VCC (IN) N.C. MAX4210 POUT µMAX 3 2 GND GND (IN) N.C. REF CIN1- CIN1+ CIN2- 3mm x 3mm TDFN 12 11 10 9 POUT 13 8 CIN2+ IOUT 14 7 GND MAX4211 RS- 15 1 2 3 4 VCC (IN) N.C. LE COUT1 RS+ 16 6 COUT2 5 INHIBIT RS- 1 16 IOUT RS+ 2 15 POUT VCC 3 14 REF (IN) N.C.
High-Side Power and Current Monitors 6, 8, &10L, DFN THIN.EPS D2 D A2 PIN 1 ID N 0.35x0.35 b PIN 1 INDEX AREA E [(N/2)-1] x e REF. E2 DETAIL A e k A1 CL A CL L L e e PACKAGE OUTLINE, 6,8,10 & 14L, TDFN, EXPOSED PAD, 3x3x0.80 mm -DRAWING NOT TO SCALE- 21-0137 G 1 2 COMMON DIMENSIONS MIN. MAX. D 0.70 2.90 0.80 3.10 E A1 2.90 0.00 3.10 0.05 L k 0.20 0.40 0.25 MIN. A2 0.20 REF. SYMBOL A PACKAGE VARIATIONS PKG.
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 24L QFN THIN.EPS MAX4210/MAX4211 High-Side Power and Current Monitors PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm 21-0139 D 1 2 PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.
High-Side Power and Current Monitors 8 INCHES DIM A A1 A2 b E fl 0.50–0.1 H c D e E H 0.6–0.1 L 1 1 α 0.6–0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.010 0.014 0.005 0.007 0.116 0.120 0.0256 BSC 0.116 0.120 0.188 0.198 0.016 0.026 6 0 0.0207 BSC 8LUMAXD.EPS 4X S 8 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 4.78 5.03 0.41 0.66 0 6 0.
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) TSSOP4.40mm.EPS MAX4210/MAX4211 High-Side Power and Current Monitors Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.