5V/3.3V/3V/Adjustable-Output, 1A,

Step-Down, PWM, Switch-Mode DC-DC Regulators

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Table 1. MAX830 Maximum Load Current (continuous with

Output Voltage and Ambient Temperature

OUTPUT VOLTAGE

CONTINUOUS LOAD CURRENT

Up to 10V

1A

1A

1A

10V to 15V

1A

1A

0.8A

15V to 20V

1A

0.8A

0.7A

20V to 25V

0.8A

0.7A

0.6A

Table 2. MAX831/MAX832/MAX833 Maximum Load Current (continuous with

OUTPUT VOLTAGE

CONTINUOUS LOAD CURRENT

Fixed:

5V, 3.3V or 3V

1A

1A

1A

VIN

VC

VSW

100

µF

GND

10k

0.047

µF

FB

100

µH

MBR350

470

µF

R1

R2

R2

INPUT

UP TO 30V

MAX830

STEP-DOWN CONVERTER

Figure 1. MAX830 Typical Operating Circuit