LX1555MY Microsemi Analog Mixed Signal Group, LX1555MY Datasheet - Page 7
![no-image](/images/manufacturer_photos/0/4/444/microsemi_analog_mixed_signal_group_sml.jpg)
LX1555MY
Manufacturer Part Number
LX1555MY
Description
IC PWM CURRENT MODE 8.4V 8DIP
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet
1.LX1554CM.pdf
(18 pages)
Specifications of LX1555MY
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
48%
Voltage - Supply
11 V ~ 25 V
Buck
Yes
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-55°C ~ 125°C
Package / Case
8-DIP
Frequency-max
500kHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Copyright © 1994
Rev. 1.0b
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
= 698
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
= 698
75
= 22nF
= 15V
100
100
125
125
7