Rainbow Electronics MAX15020 - Manual (Page 7)

MAX15020
2A, 40V Step-Down DC-DC Converter with
Dynamic Output-Voltage Programming
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(V IN = 36V, Circuit of Figure 2, T A = +25°C, unless otherwise noted.)
SOFT-START VOLTAGE RISE
vs. REFIN VOLTAGE RISE
MAX15020 toc22
V REFIN dv/dt (V/ms)
V
SS
dv/dt (V/ms)
0.1 1
0.1
1
10
0.01
0.01 10
C SS = 0.1 µF
C
SS
= 0.01 µF
V SS AND V OUT
RESPONSE TO REFIN PWM
MAX15020 toc23
2ms/div
1V
0.5V
0V
0V
20V/div
1V/div
1V/div
0V
V PWM
V REFIN
V SS
V OUT
D = 70% TO 100%
10k Ω and 0.1µF RC ON REFIN
MODULATOR GAIN
vs. INPUT VOLTAGE
MAX15020 toc24
INPUT VOLTAGE (V)
MODULATOR GAIN (V/V)
35 30 25 20 15 10
8.5
9.0
9.5
10.0
10.5
11.0
8.0
5 40
SOFT-START CHARGE CURRENT
vs. TEMPERATURE
MAX15020 toc25
TEMPERATURE ( °C)
SOFT-START CHARGE CURRENT (
µ
A)
110 85 35 60 10 -15
14.6
14.7
14.8
14.9
15.0
15.1
15.2
15.3
15.4
15.5
14.5
-40 135