MAX471CSA Maxim Integrated Products, MAX471CSA Datasheet
MAX471CSA
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... Higher Current-Sense Capability with External Sense Resistor (MAX472) 100µA Max Supply Current 18µA Max Shutdown Mode 3V to 36V Supply Operation 8-Pin DIP/SO Packages ______________Ordering Information PART MAX471CPA MAX471CSA MAX471EPA MAX471ESA MAX472CPA MAX472CSA MAX472EPA MAX472ESA _________________Pin Configurations I TO TOP VIEW ...
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Precision, High-Side Current-Sense Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage, RS+, RS GND....................-0.3V, +40V CC RMS Current, RS+ to RS- (MAX471 only)..........................±3.3A Peak Current, (RS+ to RS-) ......................................see Figure 5 Differential Input Voltage, RG1 to RG2 (MAX472 only) .....±0.3V ...
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ELECTRICAL CHARACTERISTICS—MAX472 (V = +3V to +36V, RG1 = RG2 = 200Ω PARAMETER SYMBOL Supply Voltage V Supply Current Input Offset Voltage V (Note 2) Input Bias Current I RG1 Input Bias-Current Matching OUT Current Accuracy I RG ...
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Precision, High-Side Current-Sense Amplifiers __________________________________________Typical Operating Characteristics (Typical Operating Circuit (MAX471) or circuit of Figure 4, RG1 = RG2 = 200Ω, R otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE +85° +25°C A ...
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Operating Characteristics (continued) (Typical Operating Circuit (MAX471) or circuit of Figure 4, RG1 = RG2 = 200Ω, R otherwise noted.) MAX472 ERROR vs. SENSE VOLTAGE RG1 RG2 RG2 RG1 -15 ...
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Precision, High-Side Current-Sense Amplifiers ______________________________________________________________Pin Description PIN NAME MAX471 MAX472 Shutdown. Connect to ground for normal operation. When high, supply current SHDN less than 5µA. Battery (or power) side of the internal current-sense resistor. The “+” indicates ...
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RS+ Q1 MAX471 Figure 1. MAX471 Functional Diagram POWER SOURCE OR BATTERY Q1 MAX472 Figure 2. MAX472 Functional Diagram _______________________________________________________________________________________ Precision, High-Side Current-Sense Amplifiers R SENSE RG1 A1 R SENSE V SENSE RG1 RG2 ...
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Precision, High-Side Current-Sense Amplifiers RS+ RS- RS+ RS- MAX471 SIGN OUT GND 3V TO RS+ RS- 36V RS+ RS- MAX471 SIGN OUT GND Figure 3. Paralleling MAX471s to Sense Higher Load Current for current summing. A single scaling resistor is ...
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The MAX471’s maximum sense current is 3A power-up, fault conditions, or other infrequent events, larger peak currents are allowed, provided they are short—that is, within a safe operating region, as shown in Figure 5. 50 Small 45 Outline T = ...
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Precision, High-Side Current-Sense Amplifiers In Figure 6, assume the load current to be measured is 10A and that you have determined a 0.3 inch wide, 2 ounce copper to be appropriate. The resistivity of 0.1 inch wide, 2 ounce copper ...
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RG1, and RG2. The high compliance of OUT SENSE permits using R values up to 10kΩ with minimal OUT error. Values above 10kΩ are not usually recommend- ed. The impedance of OUT’s load ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1996 Maxim Integrated Products ...