MAX639CSA Maxim Integrated Products, MAX639CSA Datasheet
MAX639CSA
Specifications of MAX639CSA
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MAX639CSA Summary of contents
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... Preset or Adjustable Output Voltage: 5.0V (MAX639) 3.3V (MAX640) 3.0V (MAX653) ♦ Low-Battery Detection Comparator ♦ Current-Limiting PFM Control Scheme ______________Ordering Information PART MAX639CPA MAX639CSA MAX639C/D MAX639EPA MAX639ESA MAX639MJA Ordering Information continued on last page. *Contact factory for dice specifications. __________________Pin Configuration TOP VIEW ...
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High-Efficiency, Low I , Step-Down DC-DC Converters Q ABSOLUTE MAXIMUM RATINGS V+...........................................................................................12V LX .........................................................(V+ - 12V) to (V+ + 0.3V) LBI, LBO, VFB, SHDN, VOUT........................-0.3V to (V+ + 0.3V) LX Output Current (Note 1) ......................................................1A LBO Output Current ............................................................10mA ...
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High-Efficiency, Low I ELECTRICAL CHARACTERISTICS (continued) ( for the MAX639 for the MAX640/MAX653, I unless otherwise noted.) PARAMETER Switch On-Resistance ...
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High-Efficiency, Low I , Step-Down DC-DC Converters Q _____________________________Typical Operating Characteristics (continued) (Circuit of Figure 3, internal feedback 100µH, T EFFICIENCY vs. OUTPUT CURRENT 100 L = 100µ MAX639 MAX640 ...
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High-Efficiency, Low I _____________________________Typical Operating Characteristics (continued) (Circuit of Figure 3, internal feedback 100µH, T MAX639 START-UP TIME vs. OUTPUT CURRENT 12 MEASURED FROM THE RISING EDGE SHDN 5V). OUT 10 ...
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High-Efficiency, Low I , Step-Down DC-DC Converters Q _____________________________Typical Operating Characteristics (continued) (Circuit of Figure 3, internal feedback 100µH, T MAX653 LOAD-TRANSIENT RESPONSE 1ms/div A: I 0mA TO 100mA, 50mA/div LOAD 100mV/div, AC COUPLED ...
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High-Efficiency, Low I ______________________________________________________________Pin Description PIN NAME Sense Input for regulated-output operation. Internally connected to an on-chip voltage divider and to 1 VOUT the variable duty-cycle, on-demand oscillator. It must be connected to the external regulated output. Low-Battery Output. ...
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High-Efficiency, Low I , Step-Down DC-DC Converters Q Figure 2 shows what happens to the ideal circuit of Figure 1 if the switch turns on with a 66% duty cycle and The inductor current ...
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... CDR105 CDR105 Sumida Electric (USA) 637 East Golf Road Arlington Heights, IL 60005 (708) 956-0666 PART NUMBER MAXC001* 267 Series** 267 Series** * Maxim Integrated Products **Matsuo Electronics 2134 Main Street Huntington Beach, CA 92648 for all PEAK (714) 969-2491 PART NUMBER SE014 SE024 ...
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High-Efficiency, Low I , Step-Down DC-DC Converters Q INPUT +4.0V TO +11. 100µ 1N5817 SHDN C IN MAX639 1 100µF VOUT MAX640 MAX653 VFB 7 GND LBI 4 3 Figure 4. Adjustable-Output ...
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High-Efficiency, Low SHDN 100µ MAX639 MAX640 1 MAX653 VOUT GND VFB 4 7 Figure 6. Inverting Configuration capacitor, even when the switch is off. This will usually not be ...
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High-Efficiency, Low I , Step-Down DC-DC Converters Q _Ordering Information (continued) PART TEMP RANGE MAX640CPA 0°C to +70°C MAX640CSA 0°C to +70°C MAX640C/D 0°C to +70°C MAX640EPA -40°C to +85°C MAX640ESA -40°C to +85°C MAX640MJA -55°C to +125°C MAX653CPA ...
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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. 13 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...