MAX1531 Maxim Integrated Products, MAX1531 Datasheet - Page 8

• Manufacturer Part Number: MAX1531
• Description: (MAX1530 / MAX1531) Multiple-Output Power-Supply Controllers for LCD Monitors
• Manufacturer: Maxim Integrated Products

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4
Multiple-Output Power-Supply Controllers for
LCD Monitors
(Circuit of Figure 1; including R5, R6, and D2; T
8
-0.5
-1.0
-1.5
-2.0
_______________________________________________________________________________________
-0.5
-1.0
-1.5
-2.0
0
0
5
4
3
2
1
0
0
0
0
LR1 NORMALIZED LOAD REGULATION
LR3 NORMALIZED LOAD REGULATION
V
FBL2
100
= V
4
vs. DRV2/DRV3 VOLTAGE
1
LR2/LR3 BASE CURRENT
FBL3
DRV2/DRV3 VOLTAGE (V)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
= 1.175V
200
8
2
300
12
3
400
16
4
500
20
5
A
Typical Operating Characteristics (continued)
-0.2
-0.4
-0.6
-0.8
-1.0
-0.3
-0.6
-0.9
-1.2
-1.5
-0.2
-0.4
-0.6
-0.8
-1.0
= +25°C, unless otherwise noted.)
0.2
0.2
0
0
0
24
2
0
LR2 NORMALIZED LOAD REGULATION
LR1 NORMALIZED LINE REGULATION
LR3 NORMALIZED LINE REGULATION
10
28
3
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
20
200mA LOAD CURRENT
20mA LOAD CURRENT
32
4
30
36
5
40
50
40
6
-0.2
-0.4
-0.6
-0.8
-1.0
0.2
30
25
20
15
10
0
5
0
9
0
LR2 NORMALIZED LINE REGULATION
V
A: LR1 OUTPUT VOLTAGE, 100mV/div, AC-COUPLED
B: LR1 LOAD CURRENT, 500mA/div
FBL4
= 1.175V
2
LR1 LOAD TRANSIENT
13
LR4 BASE CURRENT
vs. DRV VOLTAGE
INPUT VOLTAGE (V)
DRV4 VOLTAGE (V)
4
40µs/div
20mA LOAD CURRENT
17
6
21
8
MAX1530 toc12
25
10
2.5V
B
0mA
A