Typical operating characteristics (continued) – Rainbow Electronics MAX15040 User Manual
Page 6
MAX15040
High-Efficiency, 4A, Step-Down Regulator with
Integrated Switches in 2mm x 2mm Package
6
_______________________________________________________________________________________
INPUT SHUTDOWN CURRENT
vs. INPUT VOLTAGE
MAX15040 toc11
INPUT VOLTAGE (V)
INPUT SHUTDOWN CURRENT (nA)
3.4
3.2
3.0
2.8
2.6
4
8
12
16
20
0
2.4
3.6
V
EN
= 0
HICCUP CURRENT LIMIT
MAX15040 toc12
1ms/div
V
OUT
I
IN
I
OUT
1V/div
0
10A/div
5A/div
0
0
RMS INPUT CURRENT DURING
SHORT CIRCUIT vs. INPUT VOLTAGE
MAX15040 toc13
INPUT VOLTAGE (V)
RMS INPUT CURRENT (A)
3.4
3.2
3.0
2.8
2.6
0.1
0.2
0.3
0.4
0.5
0
2.4
3.6
V
OUT
= 0
FEEDBACK VOLTAGE
vs. TEMPERATURE
MAX15040 toc14
TEMPERATURE (
°C)
FEEDBACK VOLTAGE (V)
60
35
10
-15
0.592
0.594
0.596
0.598
0.600
0.602
0.604
0.606
0.608
0.610
0.590
-40
85
NO LOAD
SOFT-START WITH REFIN/SS
MAX15040 toc15
200
µs/div
I
IN
V
OUT
V
REFIN/SS
2A/div
0
0
0
0
V
PWRGD
2V/div
500mV/div
1V/div
Typical Operating Characteristics (continued)
(V
IN
= V
DD
= 3.3V, output voltage = 1.8V, I
LOAD
= 4A, and T
A
= +25°C, circuit of Figure 1, unless otherwise noted.)
STARTING INTO PREBIAS OUTPUT
WITH 2A LOAD
MAX15040 toc16
400
µs/div
V
EN
I
OUT
V
OUT
2V/div
0
0
0
0
V
PWRGD
2V/div
1V/div
2A/div
STARTING INTO PREBIAS OUTPUT
WITH NO LOAD
MAX15040 toc17
400
µs/div
V
EN
V
OUT
2V/div
0
0
0
V
PWRGD
2V/div
1V/div