OBSOLETE PRODUCT
NOT RECOMMENDED FOR NEW DESIGNS
U
LTRA
-L
OW
S
TART
-U
P
C
URRENT
, C
URRENT
-M
ODE
PWM
LX1552/3/4/5
PRODUCT DATABOOK 1996/1997
7
Copyright © 1994
Rev. 1.0b
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES
FIGURE 6. — OUTPUT DUTY CYCLE vs. TEMPERATURE
FIGURE 7. — REFERENCE VOLTAGE vs. TEMPERATURE FIGURE 8. — REFERENCE SHORT CIRCUIT CURRENT vs.
TEMPERATURE
FIGURE 5. — OUTPUT INITIAL ACCURACY vs. TEMPERATURE
40
44
(T
A
) Ambient Temperature - (°C)
Output Duty Cycle - (%)
42
45
41
46
47
43
-75
-50 -25 0 25 50 75 100 125
48
V
CC
= 15V
R
T
= 698
W
C
T
= 22nF
50.0
56.0
(T
A
) Ambient Temperature - (°C)
Output Initial Accuracy - (kHz)
53.0
57.5
51.5
59.0
60.5
54.5
-75
-50 -25 0 25 50 75 100 125
62.0
V
CC
= 15V
R
T
= 698
W
C
T
= 22nF
63.5
65.0
LX1552 and LX1553 only
4.95
4.99
(T
A
) Ambient Temperature - (°C)
(V
REF
) Reference Voltage - (V)
4.97
5.00
4.96
5.01
5.02
4.98
-75
-50 -25 0 25 50 75 100 125
5.03
V
CC
= 15V
I
L
= 1mA
30
90
(T
A
) Ambient Temperature - (°C)
(I
SC
) Reference Short Circuit Current - (mA)
60
105
45
120
135
75
-75
-50 -25 0 25 50 75 100 125
180
150
165