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MAX729CCK Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX729CCK Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 4 page _______________General Description The MAX727/MAX728/MAX729 are monolithic, bipolar, pulse-width modulation (PWM), switch-mode, step-down DC-DC regulators. Each is rated at 2A. Very few external components are needed for standard operation because the power switch, oscillator, feedback, and control circuitry are all on-chip. Employing a classic buck topology, these regulators perform high-current step-down functions. These regulators have excellent dynamic and transient response characteristics, while featuring cycle-by-cycle cur- rent limiting to protect against overcurrent faults and short- circuit output faults. They also have a wide 8V to 40V input range. Each regulator is available in a 5-pin TO-220 package. These devices have a preset 100kHz oscillator frequency and a preset current limit of 2.6A. See the MAX724/ MAX726 data sheet for more applications information. _______________________Applications Distributed Power from High-Voltage Buses High-Current, High-Voltage Step-Down Applications Multiple-Output Buck Converter 5V/3.3V/3V 2A Step-Down, PWM, Switch-Mode DC-DC Regulators ________________________________________________________________ Maxim Integrated Products 1 VIN VSW GND VC SENSE CASE IS CONNECTED TO GROUND. STANDARD PACKAGE HAS STAGGERED LEADS. CONTACT FACTORY FOR STRAIGHT LEADS. 5-PIN TO-220 FRONT VIEW MAX727 MAX728 MAX729 1 2 3 4 5 __________________Pin Configuration VIN VC VSW 220 µF GND 2.7k 0.01 µF OUTPUT 5V AT 2A SENSE 100 µH MBR745 470 µF INPUT 8V TO 40V MAX727 STEP-DOWN CONVERTER __________Typical Operating Circuit Call toll free 1-800-998-8800 for free samples or literature. 19-0149; Rev 2; 9/95 ___________________________Features o Input Range: Up to 40V o 2A On-Chip Power Switch o Fixed Outputs: 5V (MAX727) 3.3V (MAX728) 3V (MAX729) o 100kHz Switching Frequency o Excellent Dynamic Characteristics o Few External Components o 8.5mA Quiescent Current o TO-220 Package ______________Ordering Information PART MAX727CCK MAX727ECK -40°C to +85°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 5 TO-220 5 TO-220 MAX728CCK MAX728ECK -40°C to +85°C 0°C to +70°C 5 TO-220 5 TO-220 MAX729CCK MAX729ECK -40°C to +85°C 0°C to +70°C 5 TO-220 5 TO-220 |
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