LX1555MY Microsemi Analog Mixed Signal Group, LX1555MY Datasheet - Page 10

• 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
10
FIGURE 17. — START-UP THRESHOLD vs. TEMPERATURE
FIGURE 19. — MINIMUM OPERATING VOLTAGE vs.
17.0
16.8
16.6
16.4
16.2
16.0
15.8
15.6
15.4
15.2
15.0
8.0
7.9
7.8
7.7
7.6
7.5
7.4
7.3
7.2
7.1
7.0
-75
-75
-50
-50
(T
(T
TEMPERATURE
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
75
LX1552
LX1554
75
LX1553
LX1555
S
TART
100
100
-U
P
125
125
C
URRENT
D
, C
A T A
URRENT
FIGURE 18. — MINIMUM OPERATING VOLTAGE vs.
FIGURE 20. — LOW LEVEL OUTPUT SATURATION VOLTAGE
11.0
10.8
10.6
10.4
10.2
10.0
1.20
1.08
0.96
0.84
0.72
0.60
0.48
0.36
0.24
0.12
0.00
9.8
9.6
9.4
9.2
9.0
S
-M
-75
0.1
H E E T
ODE
V
-50
CC
PWM
(T
= 5V
TEMPERATURE
DURING UNDER-VOLTAGE LOCKOUT
A
) Ambient Temperature - (°C)
Output Sink Current - (mA)
-25
0
T
A
T
T
A
A
= 125°C
= -55°C
= 25°C
25
1
50
75
LX1552
LX1554
100
Copyright © 1994
Rev. 1.0b
125
10