Rainbow Electronics MAX833 - Manual (Page 5)

MAX830–MAX833
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 q
jA = +55°C/W) vs.
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
q
jA = +55°C/W) vs. Ambient Temperature
OUTPUT VOLTAGE
CONTINUOUS LOAD CURRENT
Fixed:
5V, 3.3V or 3V
1A 1A 1A
T A = +25°C T A = +45°C T A = +70°C
T A = +25°C T A = +45°C T A = +70°C
VIN
VC
VSW
100 µ F
GND
10k
0.047 µ F
V OUT
FB
100 µ H
MBR350
470 µ F
R1
V OUT
= [
1 + R1
]
x 2.21V
R2
R2
INPUT
UP TO 30V
MAX830
STEP-DOWN CONVERTER
Figure 1. MAX830 Typical Operating Circuit