Rainbow Electronics MAX1531 - Manual (Page 9)

MAX1530/MAX1531
Multiple-Output Power-Supply Controllers for
LCD Monitors
_______________________________________________________________________________________ 9
Typical Operating Characteristics (continued)
(Circuit of Figure 1; including R5, R6, and D2; T A = +25°C, unless otherwise noted.)
LR4 NORMALIZED LOAD REGULATION
MAX1530 toc19
LOAD CURRENT (mA)
VOLTAGE ERROR (%)
400 300 200 100
-0.5
-0.4
-0.3
-0.2
-0.1
0
-0.6
0 500
LR4 NORMALIZED LINE REGULATION
MAX1530 toc20
INPUT VOLTAGE (V)
OUTPUT-VOLTAGE ERROR (%)
21 17 13
-0.8
-0.6
-0.4
-0.2
0
0.2
-1.0
9 25
200mA LOAD CURRENT
LR4 LOAD TRANSIENT
MAX1530 toc21
40 µs/div
A
B
A: LR4 OUTPUT VOLTAGE, 100mV/div, AC-COUPLED
B: LR4 LOAD CURRENT, 500mA/div
10V
0mA
LR4 PULSED LOAD TRANSIENT
MAX1530 toc22
10 µs/div
A
B
A: LR4 OUTPUT VOLTAGE, 100mV/div, AC-COUPLED
B: LR4 LOAD CURRENT, 1A/div
10V
0A
MAX1531
OVERCURRENT PROTECTION (CSH, CSL)
MAX1530 toc23
20 µs/div
A: V
LX
, 10V/div
B: V OUT , 5V/div
B
C
D
A
C: V RESET , 5V/div
D: V CSH - V CSL , 500mV/div
LR5 BASE CURRENT
vs. DRV5 VOLTAGE
MAX1530 toc24
DRV5 VOLTAGE (V)
BASE CURRENT (mA)
4 3 2 1
2
4
6
8
10
0
0 5
V FBL5 = 0V