LX1555MY Microsemi Analog Mixed Signal Group, LX1555MY Datasheet - Page 3

• 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

Copyright © 1994
Rev. 1.0b
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for LX155xC with 0°C T
with -55°C T
ambient temperature.)
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 2 & 7)
Total Output Variation
Output Noise Voltage (Note 2)
Long Term Stability (Note 2)
Output Short Circuit
Oscillator Section
Initial Accuracy (Note 6)
Voltage Stability
Temperature Stability (Note 2)
Amplitude (Note 2)
Discharge Current
Error Amp Section
Input Voltage
Input Bias Current
Open Loop Gain
Unity Gain Bandwidth (Note 2)
Power Supply Rejection Ratio (Note 3)
Output Sink Current
Output Source Current
Output Voltage High Level
Output Voltage Low Level
Current Sense Section
Gain (Note 3 & 4)
Maximum Input Signal (Note 3)
Power Supply Rejection Ratio (Note 3)
Input Bias Current
Delay to Output (Note 2)
Output Section
Output Voltage Low Level
Output Voltage High Level
Rise Time (Note 2)
Fall Time (Note 2)
UVLO Saturation
A
Parameter
125°C; V
CC
=15V (Note 5); R
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
T
=10K; C
U
Symbol
(El ec tr ic a l C ha r a ct er i st i cs c onti nu e next pag e.)
UGBW
LTRA
PSRR
PSRR
A
A
V
V
V
V
V
V
I
T
V
I
I
OH
T
T
I
I
I
REF
SC
VOL
OL
OH
VOL
OH
SAT
D
OL
PD
OL
B
B
N
R
F
T
P
E L E C T R I C A L C H A R A C T E R I S T I C S
=3.3nF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the
-L
R O D U C T I O N
OW
T
12
1
Over Line, Load, and Temperature
10Hz f 10kHz, T
T
T
T
12
T
V
T
V
V
2
T
12
V
V
V
V
V
12
V
I
I
I
I
T
T
V
SINK
SINK
SOURCE
SOURCE
A
A
A
A
MIN
A
A
A
A
PIN 4
PIN 4
PIN 1
PIN 2
PIN 2
PIN 2
PIN 2
PIN 1
PIN 3
CC
= 25°C, V
= 25°C, I
= 125°C, t = 1000hrs
= 25°C
= 25°C, R
= 25°C
= 25°C, C
= 25°C, C
= 5V, I
S
I
V
= 20mA
= 200mA
O
= 2V, T
= 2.3V, R
= 2.5V
O
= 2.7V, V
= 2.3V, V
= 2.7V, R
= 5V
= 0 to 2V
V
V
V
V
peak to peak
TART
T
= 20mA
= 200mA
IN
CC
CC
CC
A
20mA
4V
SINK
25V
25V
25V
25V
T
-U
L
MAX
MIN
T
PIN 4
L
L
= 1mA
= 698 , C
= 10mA
= 1nF
= 1nF
L
PIN 1
PIN 1
L
P
= 15K to ground
Test Conditions
= 15K to V
= 2V
C
T
A
= 1.1V
= 5V
URRENT
A
T
= 25°C
MAX
T
= 22nF, LX1552/3 only
D
REF
, C
A T A
URRENT
S
-M
H E E T
ODE
PWM
Min. Typ. Max. Min. Typ. Max.
4.95 5.00 5.05 4.95 5.00 5.05
48.5 50.5 52.5 48.5 50.5 52.5
2.45 2.50 2.55 2.45 2.50 2.55
2.85
-0.5
LX155xI/155xM
4.9
-30
8.0
7.6
0.9
56
65
60
13
12
2
5
A
-100 -180
13.5
13.5
-0.1
-0.8
150
70°C, LX155xI with -40°C T
0.2
0.2
1.7
8.3
0.6
6.5
0.7
0.1
1.5
0.7
50
58
90
70
70
50
50
-2
6
6
5
5
4
3
1
LX1552/3/4/5
3.15 2.85
300
100
100
0.4
5.1
8.6
8.8
1.1
1.1
-10
0.4
2.2
1.2
20
25
25
60
-1
1
-0.5
4.9
-30
8.0
7.8
0.9
56
65
60
13
12
2
5
LX155xC
-100 -180
13.5
13.5
-0.1
-0.8
150
0.2
0.2
1.7
8.3
0.6
6.5
0.7
0.1
1.5
0.7
50
58
90
70
70
50
50
-2
6
6
5
5
4
3
1
3.15
A
-0.5
300
100
100
0.4
5.1
8.6
8.8
1.1
1.1
0.4
2.2
1.2
20
25
25
60
-5
1
85°C, LX155xM
Units
mV/°C
MHz
kHz
mA
kHz
mA
mA
mA
mA
mV
mV
mV
µA
V/V
µA
µV
dB
dB
dB
%
%
ns
ns
ns
V
V
V
V
V
V
V
V
V
V
V
V
3