Typical operating characteristics (continued) – Rainbow Electronics MAX15041 User Manual
Page 5
MAX15041
Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM
Step-Down DC-DC Regulator with Internal Switches
_______________________________________________________________________________________
5
INPUT SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX15041 toc09
INPUT VOLTAGE (V)
INPUT SUPPLY CURRENT (mA)
25
20
15
10
5
11
12
13
14
15
16
10
0
L = 4.7FH
I
LOAD
= 0A
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX15041 toc10
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (
FA)
1
2
3
4
5
6
7
8
9
10
0
25
20
15
10
5
0
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX15041 toc11
TEMPERATURE (NC)
SHUTDOWN CURRENT (
FA)
60
35
10
-15
1.5
2.0
2.5
3.0
3.5
4.0
1.0
-40
85
SHUTDOWN WAVEFORMS
MAX15041 toc12
V
OUT
2V/div
V
EN
5V/div
I
L
2A/div
V
PGOOD
5V/div
100µs/div
OUTPUT SHORT-CIRCUIT WAVEFORMS
MAX15041 toc13
I
IN
5A/div
V
OUT
2V/div
I
L
5A/div
V
SS
2V/div
10µs/div
SWITCHING WAVEFORMS
MAX15041 toc14
I
L
2A/div
V
LX
10V/div
V
OUT
AC-COUPLED
50mV/div
1µs/div
Typical Operating Characteristics (continued)
(V
IN
= 12V, V
OUT
= 3.3V, C
VDD
= 1µF, C
IN
= 22µF, T
A
= +25°C, circuit of Figure 3 (see Table 1 for values), unless otherwise specified.)
SOFT-START WAVEFORMS
MAX15041 toc15
I
L
2A/div
V
EN
5V/div
V
OUT
2V/div
V
PGOOD
5V/div
400µs/div