lx1554 Microsemi Corporation, lx1554 Datasheet - Page 7

• Manufacturer Part Number: lx1554
• Description: Ultra-low Start-up Current, Current-mode Pwm
• Manufacturer: Microsemi Corporation

Copyright © 1994
Rev. 1.0a 1/01
FIGURE 5. — OUTPUT INITIAL ACCURACY vs. TEMPERATURE
FIGURE 7. — REFERENCE VOLTAGE vs. TEMPERATURE
65.0
63.5
62.0
60.5
59.0
57.5
56.0
54.5
53.0
51.5
50.0
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.95
4.96
-75
-75
LX1552 and LX1553 only
-50
-50
(T
(T
A
A
) Ambient Temperature - (°C)
) Ambient Temperature - (°C)
-25
-25
0
0
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
25
25
U
LTRA
P
50
50
-L
R O D U C T I O N
OW
C H A R A C T E R I S T I C C U R V E S
V
R
C
V
I
T
CC
T
L
75
= 698W
CC
75
= 22nF
= 1mA
S
= 15V
= 15V
TART
100
100
-U
P
125
125
C
URRENT
D
, C
A T A
URRENT
FIGURE 6. — OUTPUT DUTY CYCLE vs. TEMPERATURE
FIGURE 8. — REFERENCE SHORT CIRCUIT CURRENT vs.
180
165
150
135
120
105
48
47
46
45
44
43
42
40
90
75
60
45
30
41
S
-M
-75
-75
H E E T
ODE
-50
-50
TEMPERATURE
PWM
(T
(T
A
A
) Ambient Temperature - (°C)
) Ambient Temperature - (°C)
-25
-25
0
0
LX1552/3/4/5
25
25
50
50
V
R
C
T
CC
T
75
= 698W
75
= 22nF
= 15V
100
100
125
125
7