MAX1836EUT33 Maxim, MAX1836EUT33 Datasheet - Page 4

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

24V Internal Switch, 100% Duty Cycle,
Step-Down Converters
ELECTRICAL CHARACTERISTICS (continued)
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
(Circuits of Figures 1 (MAX1836) and 2 (MAX1837), V
4
Note 2: When using the shutdown input, the maximum output voltage allowed with external feedback is 5.5V. If the output voltage is
Note 3: Shutdown input minimum slew rate (rising or falling) is 10V/ms.
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
LX Zero-Crossing Threshold
Shutdown Input Threshold
Shutdown Leakage Current
100
3.33
3.32
3.31
3.30
3.29
3.28
3.27
95
90
85
80
75
70
_______________________________________________________________________________________
0.1
0
OUTPUT VOLTAGE vs. LOAD CURRENT
V
FIGURE 2
V
set above 5.5V, connect shutdown to the input.
FIGURE 1
IN
OUT
EFFICIENCY vs. LOAD CURRENT
PARAMETER
= 9V to 12V
= 3.3V
50
1
LOAD CURRENT (mA)
LOAD CURRENT (mA)
MAX1837EUT33
MAX1836EUT33
V
IN
100
= 5V
10
V
IN
= 5V
V
IN
100
150
= 12V
V
IN
= 9V
SYMBOL
V
1000
I
200
SHDN
SHDN
100
95
90
85
80
75
70
180
160
140
120
100
80
60
40
20
V
V
0
SWITCHING FREQUENCY vs. LOAD CURRENT
IN
SHDN
0.1
0
IN
= 4.5V to 24V (Note 3)
IN
FIGURE 1
V
FIGURE 2
V
OUT
OUT
EFFICIENCY vs. LOAD CURRENT
= 12V, SHDN = IN, T
= 12V, SHDN = IN, T
50
= 3.3V
= 0 or 24V
= 3.3V
1
100
LOAD CURRENT (mA)
LOAD CURRENT (mA)
MAX1836EUT33
V
MAX1837EUT33
IN
= 5V
CONDITIONS
V
150
IN
= 12V
10
200
Typical Operating Characteristics
V
V
IN
IN
250
V
= 9V
= 12V
100
IN
V
A
A
IN
= 5V
= +25°C.)
= 9V
= -40°C to +85°C, unless otherwise noted.) (Note 4)
300
1000
350
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.33
3.32
3.31
3.30
3.29
3.28
3.27
0
0
OUTPUT VOLTAGE vs. INPUT VOLTAGE
OUTPUT VOLTAGE vs. LOAD CURRENT
FIGURE 2
FIGURE 2
V
L1 = 47µH
MIN
-75
0.8
OUT
-1
V
50
IN
4
= 3.3V
= 9V
100
LOAD CURRENT (mA)
MAX1837EUT33
MAX1837EUT33
INPUT VOLTAGE (V)
8
TYP
V
150
IN
= 5V
12
200
V
I
IN
OUT
I
OUT
MAX
= 12V
+75
2.4
16
+1
= 200mA
= 10mA
250
20
300
UNITS
mV
µA
V
350
24