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MAX471CSA Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX471CSA Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 12 page Precision, High-Side Current-Sense Amplifiers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS—MAX471 (RS+ = +3V to +36V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) 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. Supply Voltage, RS+, RS-, VCC to GND....................-0.3V, +40V 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 Voltage at Any Pin Except SIGN MAX471 only ...........................................-0.3V to (RS+ - 0.3V) MAX472 only ..........................................-0.3V to (VCC + 0.3V) Voltage at SIGN......................................................-0.3V to +40V Current into SHDN, GND, OUT, RG1, RG2, VCC................±50mA Current into SIGN.................................................+10mA, -50mA Continuous Power Dissipation (TA = +70°C) MAX471 (Note 1): Plastic DIP (derate 17.5mW/°C above +70°C) ..................1.4W SO (derate 9.9mW/°C above +70°C) .............................791mW MAX472 : Plastic DIP (derate 9.09mW/°C above +70°C) ..............727mW SO (derate 5.88mW/°C above +70°C) ...........................471mW Operating Temperature Ranges MAX47_C_A ........................................................0°C to +70°C MAX47_E_A .....................................................-40°C to +85°C Junction Temperature Range ............................-60°C to +150°C Storage Temperature Range .............................-60°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C VSHDN = 2.4V ILOAD = 0A, excludes ISIGN VSHDN = 0V VSHDN = 2.4V; VCC = 3V to 20V VSIGN = 0.3V VSIGN = 36V ILOAD = 30mA, RS+ = 10V MAX471E MAX471C ILOAD = 0A, RS+ = 10V ILOAD = 1A, RS+ = 10V 3V ≤ RS+ ≤ 36V, ILOAD = 1A CONDITIONS V 0VRS+ - 1.5 VOUT OUT Output Voltage Range µA 1.0 IIH SHDN Input High Current V 2.4 VIH SHDN Input High Voltage µA 1.0 IIL SHDN Input Low Current V 0.3 VIL SHDN Input Low Voltage µA 1.5 18.0 IRS+(SHDN) Shutdown Supply Current mA 0.1 IOL SIGN Sink Current µA 1.0 SIGN Output Leakage Current mA ±4.0 ±6.0 SIGN Threshold (ILOAD required to switch SIGN) %/V 0.1 PSRR Power-Supply Rejection Ratio ARMS ±3 ILOAD Sense Current V 50 113 IRS+ 336 VRS+ Supply Voltage Supply Current µA ±3.0 Low-Level OUT Error ±2.5 µA 3.0 No-Load OUT Error m Ω 35 70 RSENSE Sense Resistor 0.490 0.500 0.510 mA/A 0.4875 0.500 0.5125 IOUT/ ILOAD Current-Sense Ratio 2.5 UNITS MIN TYP MAX SYMBOL PARAMETER OUT Output Resistance ROUT ILOAD = 3.0A, VOUT = 0V to (VRS+ - 1.5V) 13 M Ω OUT Rise, Fall Time tR, tF ILOAD = 50mA to 3.0A, ROUT = 2kΩ, COUT = 50pF, 10% to 90% 4 µs OUT Settling Time to 1% of Final Value ts ILOAD = 100mA to 3.0A, ROUT = 2kΩ, COUT = 50pF 15 µs MAX471C MAX471C MAX471C MAX471E MAX471E MAX471E ±7.0 µA Note 1: Due to special packaging considerations, MAX471 (DIP, SO) has a higher power dissipation rating than the MAX472. RS+ and RS- must be soldered to large copper traces to achieve this dissipation rating. |
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