LT1943 LINER [Linear Technology], LT1943 Datasheet - Page 6

• Manufacturer Part Number: LT1943
• Description: High Current Quad Output Regulator for TFT LCD Panels
• Manufacturer: LINER [Linear Technology]

LT1943
TYPICAL PERFOR A CE CHARACTERISTICS
6
100
90
80
70
60
50
40
30
5
V
T
ON
A
= 25 C
10
Current Limit
15
20
V
ON
1.27
1.26
1.25
1.24
1.23
1.22
(V)
25
–50
Reference Voltage
–25
30
W
35
0
1943 G13
TEMPERATURE ( C)
U
40
25
50
75
1.4
1.3
1.2
1.1
1.0
–50
Oscillator Frequency
100
1943 G16
–25
125
0
TEMPERATURE ( C)
25
100
80
60
40
20
0
50
–50
Bias Pin Current
–25
75
I
SW2
I
I
I
SW2
SW3
SW4
= I
100
= 1.5A
= 0.2A
= 0.3A
SW3
1943 G14
0
TEMPERATURE ( C)
125
= I
25
SW4
= 0A
50
75
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
Frequency Foldback
100
T
A
1943 G17
= 25 C
0.2
125
FEEDBACK VOLTAGE (V)
0.4
0.6
0.8
1.0
1943 G14
1943i
1.2