MAX15041_10 Datasheet, PDF (5/18 Pages) Maxim Integrated Products – Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM Step-Down DC-DC Regulator with Internal Switches

Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM
Step-Down DC-DC Regulator with Internal Switches
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.)
INPUT SUPPLY CURRENT
vs. INPUT VOLTAGE
16
L = 4.7FH
15
I_LOAD = 0A
14
13
12
11
10
0
5 10 15 20 25
INPUT VOLTAGE (V)
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
10
9
8
7
6
5
4
3
2
1
0
0
5 10 15 20 25
INPUT VOLTAGE (V)
SHUTDOWN CURRENT
vs. TEMPERATURE
4.0
3.5
3.0
2.5
2.0
1.5
1.0
-40 -15
10
35
60
85
TEMPERATURE (NC)
SHUTDOWN WAVEFORMS
MAX15041 toc12
V_EN
5V/div
V_OUT
2V/div
I_L
2A/div
V_PGOOD
5V/div
OUTPUT SHORT-CIRCUIT WAVEFORMS
MAX15041 toc13
V_OUT
2V/div
I_IN
5A/div
I_L
5A/div
V_SS
2V/div
100µs/div
10µs/div
SWITCHING WAVEFORMS
MAX15041 toc14
V_LX
10V/div
1µs/div
I_L
2A/div
V_OUT
AC-COUPLED
50mV/div
SOFT-START WAVEFORMS
MAX15041 toc15
V_EN
5V/div
V_OUT
2V/div
400µs/div
I_L
2A/div
V_PGOOD
5V/div
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