LT1243CS8 Linear Technology, LT1243CS8 Datasheet - Page 11
![IC PWM CURRENT MODE HI-SPD 8SOIC](/photos/7/54/75490/lt1243cs8_sml.jpg)
LT1243CS8
Manufacturer Part Number
LT1243CS8
Description
IC PWM CURRENT MODE HI-SPD 8SOIC
Manufacturer
Linear Technology
Datasheet
1.LT1245IN8.pdf
(16 pages)
Specifications of LT1243CS8
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
96%
Voltage - Supply
8.2 V ~ 25 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 100°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
500kHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1243CS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1243CS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
TYPICAL
EXTERNAL
D1 IS REQUIRED IF THE SYNC AMPLITUDE IS LARGE
ENOUGH TO PULL THE BOTTOM OF C
300mV BELOW GROUND.
INPUT
SYNC
External Clock Synchronization
C
+
0.01 F
R1
R2
A
100k
PPLICATI
R
47
V
T
R
C
REF
T
T
8
4
R
COMP
/C
V
FB
T
REF
T
8
4
1
2
/C
T
T
D1
V
OSCILLATOR
MORE THAN
CLAMP
5V REF
LT1241 • TA01
2.5V
–
+
(
O
R2
R1
1.67
+ 1
U
(
S
I
PK (MAX)
Adjustable Clamp Level with Soft Start
C
1mA
R
5.6V
OSCILLATOR
V
CLAMP
2R
I
COMP
R
SENSE
V
FB
S
REF
8
1
2
3
MAIN BIAS
R
5V REF
WHERE: 0V V
1V
2.5V
–
+
+
–
CLAMP
REFERENCE PULL-DOWN
REFERENCE ENABLE
T
1.0V
1mA
BLANKING
Soft Start
S
R
t
5.6V
SOFT START
1.5V
2R
PULL-DOWN
5V REF
+
–
OUTPUT
R
= –ln 1 –
LOCKOUT
UV
1V
–
+
18V
3 • V
LT1241 Series
V
CLAMP
C
OUTPUT
I
SENSE
V
GND
CC
7
6
5
3
1.5V
C
R1 R2
R1 + R2
–
+
LT1241 • TA03
V
IN
LT1241 • TA02
R
11
S