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LT1246CS8#TRPBF

P1-P3P4-P6P7-P9P10-P12
LT1246/LT1247
10
Adjustable Clamp Level with Soft Start
Soft Start
External Clock Synchronization
LT1246 • TA06
R
V
REF
FEEDBACK
COMP
I
SENSE
C
+
–
+
–
1
2
2.5V
2R
R
1V
1.5V
–
+
3
1mA
5.6V
8
5V REF
LT1246 • TA07
FEEDBACK
COMP
R
T
/C
T
V
REF
V
IN
R
S
R2
C
R1
V
CLAMP
≈
1.67
R2
+ 1
R1
(
(
I
PK (MAX)
≈
V
CLAMP
R
S
WHERE: O ≤ V
CLAMP
≤ 1.0V t
SOFT START
= –ln
1 –
V
C
C
R1 R2
3 • V
CLAMP
R1 + R2
I
SENSE
+
–
+
–
2
2.5V
2R
R
1V
1.5V
–
+
BLANKING
1mA
5.6V
4
OSCILLATOR
R
S
18V
7
V
CC
UV
LOCKOUT
5
GND
6
OUTPUT
5V REF
MAIN BIAS
REFERENCE PULLDOWN
OUTPUT
PULLDOWN
REFERENCE ENABLE
1
8
3
100k
LT1246 • TA05
5V REF
OSCILLATOR
EXTERNAL
SYNC
INPUT
0.01µF
47Ω
C
T
D1
R
T
R
T
/C
T
V
REF
D1 IS REQUIRED IF THE SYNC AMPLITUDE IS
LARGE ENOUGH TO PULL THE BOTTOM OF C
T
MORE THAN 300mV BELOW GROUND.
8
4
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
11
LT1246/LT1247
Slope Compensation at I
SENSE
Pin
LT1246 • TA08
R
T
C
T
FEEDBACK
COMP
R
T
/C
T
V
REF
V
IN
R
S
I
SENSE
+
–
+
–
2
2.5V
2R
R
1V
1.5V
–
+
BLANKING
1mA
5.6V
OSCILLATOR
R
S
18V
7
V
CC
UV
LOCKOUT
5
GND
6
OUTPUT
5V REF
MAIN BIAS
REFERENCE PULLDOWN
OUTPUT
PULLDOWN
REFERENCE ENABLE
1
8
3
4
Slope Compensation at Error Amp
LT1246 • TA09
FEEDBACK
COMP
R
T
/C
T
V
REF
I
SENSE
+
–
+
–
2.5V
2R
R
1V
1.5V
–
+
BLANKING
1mA
5.6V
4
OSCILLATOR
R
S
18V
7
V
CC
UV
LOCKOUT
5
GND
6
OUTPUT
5V REF
MAIN BIAS
REFERENCE PULLDOWN
OUTPUT
PULLDOWN
REFERENCE ENABLE
8
3
R
SLOPE
TO
V
OUT
2
R
f
R
T
C
T
1
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
LT1246/LT1247
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900
●
FAX
: (408) 434-0507
●
TELEX
: 499-3977
LT/GP 0395 5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1992
U
PACKAGE
D
E
SC
R
I
PTI
O
Dimensions in inches (millimeters) unless otherwise noted.
N8 0694
0.045 ± 0.015
(1.143 ± 0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.065
(1.651)
TYP
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.015
(0.380)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.125
(3.175)
MIN
12
3
4
876
5
0.255 ± 0.015*
(6.477 ± 0.381)
0.400*
(10.160)
MAX
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.325
+0.025
–0.015
+0.635
–0.381
8.255
()
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
SO8 0294
0.016 – 0.050
0.406 – 1.270
0.010 – 0.020
(0.254 – 0.508)
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
1
2
3
4
0.150 – 0.157*
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
N8 Package
8-Lead Plastic DIP
S8 Package
8-Lead Plastic SOIC
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P1-P3P4-P6P7-P9P10-P12

LT1246CS8#TRPBF

Mfr. #:
Buy LT1246CS8#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Controllers 1MHz Off-Line C Mode PWM & DC/DC Conv
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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