LX1555MY Microsemi Analog Mixed Signal Group, LX1555MY Datasheet - Page 8

• Manufacturer Part Number: LX1555MY
• Description: IC PWM CURRENT MODE 8.4V 8DIP
• Manufacturer: Microsemi Analog Mixed Signal Group

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

LX1552/3/4/5
8
FIGURE 9. — E.A. INPUT VOLTAGE vs. TEMPERATURE
FIGURE 11. — START-UP CURRENT vs. SUPPLY VOLTAGE
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
250
225
200
175
150
125
100
75
50
25
0
-75
0
LX1553/LX1555
T
A
-50
2
= 25°C
(T
A
4
) Ambient Temperature - (°C)
-25
(V
CC
6
) Supply Voltage - (V)
0
8
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
25
U
10
LTRA
P
12
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
14
V
75
CC
S
= 15V
TART
16
100
-U
18
P
125
C
20
URRENT
D
, C
A T A
URRENT
FIGURE 10. — START-UP CURRENT vs. TEMPERATURE
FIGURE 12. — START-UP CURRENT vs. SUPPLY VOLTAGE
250
225
200
175
150
125
100
250
225
200
175
150
125
100
25
75
50
75
50
25
S
0
0
-M
-75
0
H E E T
ODE
LX1552/LX1554
T
A
-50
1
= 25°C
PWM
(T
A
2
) Ambient Temperature - (°C)
-25
(V
CC
3
) Supply Voltage - (V)
0
4
25
5
LX1553/LX1555
LX1552/LX1554
50
6
7
75
8
100
Copyright © 1994
Rev. 1.0b
9
125
10