MAX1836EUT33 Maxim, MAX1836EUT33 Datasheet - Page 5

• Manufacturer Part Number: MAX1836EUT33
• Description: 24V Internal Switch / 100% Duty Cycle / Step-Down Converters
• Manufacturer: Maxim

(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
100
95
90
85
80
75
70
0
EFFICIENCY vs. INPUT VOLTAGE
4
MAX1837EUT33
INPUT VOLTAGE (V)
I
OUT
8
5.04
5.02
5.00
4.98
4.96
= 10mA
400
350
300
250
200
150
100
_______________________________________________________________________________________
50
0
12
0
0
DROPOUT VOLTAGE vs. LOAD CURRENT
OUTPUT VOLTAGE vs. LOAD CURRENT
24V Internal Switch, 100% Duty Cycle,
V
FIGURE 6
FIGURE 6
V
IN
OUT
I
= 12V TO 24V
16
OUT
50
= 5V
V
= 200mA
OUT
L1 = 47µH
FIGURE 2
20
LOAD CURRENT (mA)
MAX1837EUT50
100
LOAD CURRENT (mA)
MAX1837EUT50
100
= 3.3V
V
24
IN
150
V
IN
= 9V
= 7V
200
200
100
Typical Operating Characteristics (continued)
10
1
250
SWITCHING FREQUENCY vs. INPUT VOLTAGE
0
IN
= 12V, SHDN = IN, T
300
300
4
MAX1837EUT33
INPUT VOLTAGE (V)
8
12
Step-Down Converters
100
95
90
85
80
75
70
15
14
13
12
11
10
16
I
0.1
OUT
I
0
V
OUT
A
L1 = 47µH
OUT
FIGURE 6
V
FIGURE 2
V
OUT
= +25°C.)
= 200mA
EFFICIENCY vs. LOAD CURRENT
IN
= 10mA
20
= 3.3V
= 12V
NO-LOAD SUPPLY CURRENT
4
= 5V
1
vs. INPUT VOLTAGE
LOAD CURRENT (mA)
24
MAX1837EUT50
INPUT VOLTAGE (V)
8
V
IN
V
= 18V
IN
10
12
1000
800
600
400
200
PEAK INDUCTOR CURRENT vs. INPUT VOLTAGE
= 9V
0
0
16
FIGURE 2
V
L1 = 47µH
OUT
LIMITED BY
V
t
ON(MIN)
IN
100
V
IN
= 3.3V
= 24V
4
20
= 7V
MAX1837EUT33
INPUT VOLTAGE (V)
1000
8
24
12
LIMITED BY
I
OUT
I
LIM
16
I
= 200mA
OUT
= 10mA
20
24
5