5V/3.3V/3V/Adjustable-Output / 1A / Step-Down / PWM / Switch-Mode DC-DC Regulators
Description
19-0167; Rev 2; 6/95
5V/3.
3V/3V/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators
_______________General Description
The MAX830/MAX831/MAX832/MAX833 are monolithic, bipolar, pulse-width-modulation (PWM), switch-mode, stepdown 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 current limiting to protect against overcurrent faults and shortcircuit 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.
NUAL KIT MA ATION U EET L H A S V A E T WS DA FOLLO
___________________________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
MAX830–MAX833
______________Ordering Information
PART MAX830CWE MAX831CWE MAX832CWE MAX833CWE TEMP.
RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C PIN-PACKAGE 16 Wide SO 16 Wide SO 16 Wide SO 16 Wide SO
_______________________Applications
Distributed Power from High-Voltage Buses High-Current, High-Voltage Step-Down Applications Multiple-Output Buck Converter
__________Typical Operating Circuit
__________________Pin Configuration
TOP VIEW
INPUT 8V TO 30V 100µF VIN ...
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