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MAX833 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX833 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 5 page _______________General Description The MAX830/MAX831/MAX832/MAX833 are monolithic, bipolar, pulse-width-modulation (PWM), switch-mode, step- down DC-DC regulators. Each is rated at 1A. 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 have a wide 8V to 30V input range. Outputs for the MAX831/MAX832/MAX833 are fixed at 5V/3.3V/3V, respectively. The MAX830 output is adjustable. Available in 16-pin SO packages, the MAX830–MAX833 have a preset 100kHz oscillator frequency. In addition, the preset current limit and micropower shutdown can be externally controlled. 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/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators ________________________________________________________________ Maxim Integrated Products 1 TOP VIEW 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 VSW VSW VSW VSW VIN VIN VIN VIN MAX830 MAX831 MAX832 MAX833 GND VC GND SHUT (FB) SENSE GND ILIM GND Wide SO Tj (MAX) = +125°C, θjA = +55°C/W* ( ) ARE FOR MAX830 * THIS THERMAL RESISTANCE NUMBER IS WITH THE DEVICE WELL MOUNTED ON 1 oz. COPPER WITH THERMAL PASTE BETWEEN THE IC AND THE UNDERLYING GROUND PLANE. LOWER THERMAL RESISTANCE IS POSSIBLE (SEE APPLICATIONS SECTION). __________________Pin Configuration VIN VC VSW 100 µF GND 10k 0.047 µF OUTPUT 5V AT 1A SENSE 100 µH* MBR350 470 µF INPUT 8V TO 30V MAX831 STEP-DOWN CONVERTER * CoilCraft DO3316-104 __________Typical Operating Circuit Call toll free 1-800-998-8800 for free samples or literature. 19-0167; Rev 2; 6/95 ___________________________Features o Input Range: Up to 30V o 1A On-Chip Power Switch o Adjustable Output (MAX830) Fixed Outputs: 5V (MAX831) 3.3V (MAX832) 3V (MAX833) o 100kHz Switching Frequency o Excellent Dynamic Characteristics o Few External Components o 8mA Quiescent Current o 16-Pin SO Package o Evaluation Kit Available ______________Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX830CWE 0°C to +70°C 16 Wide SO MAX832CWE 0°C to +70°C 16 Wide SO MAX831CWE 0°C to +70°C 16 Wide SO MAX833CWE 0°C to +70°C 16 Wide SO EVALUATION KIT MANUAL FOLLOWS DATA SHEET |
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