lt1244is8-trpbf Linear Technology Corporation, lt1244is8-trpbf Datasheet - Page 16

• Manufacturer Part Number: lt1244is8-trpbf
• Description: Lt1242 - High Speed Current Mode Pulse Width Modulators
• Manufacturer: Linear Technology Corporation

LT1241 Series
TYPICAL
RELATED PARTS
PART NUMBER
LT1246
LT1248/LT1249
LT1372
LT1376
LT1509
16
V OUT
TO
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417 [phone]
FAX: [phone] TELEX: 499-3977 www.linear-tech.com
R
SLOPE
APPLICATION
R
DESCRIPTION
1MHz Current Mode PWM
Power Factor Controllers
High Efficiency Switching Regulator
1.5A 500kHz Step-Down Switching Regulator
Power Factor and PWM Controller
T
C
T
R
f
COMP
R
V
T /
FB
REF
8
4
1
2
C
T
U
2.5V
–
+
Slope Compensation at Error Amp
1mA
5.6V
OSCILLATOR
2R
R
MAIN BIAS
5V REF
COMMENTS
16V Start-Up Threshold, 10V Minimum Operating Voltage
Minimal Parts Count
500kHz 1.5A Boost Regulator
Steps Down from Up to 25V Using 4.7 H Inductors
Complete Solution for Universal Off-Line Switching Power Supplies
1V
–
+
REFERENCE PULL-DOWN
REFERENCE ENABLE
BLANKING
T
R
S
1.5V
1241fa LT/TP 0297 5K REV A • PRINTED IN USA
PULL-DOWN
+
–
LINEAR TECHNOLOGY CORPORATION 1992
OUTPUT
LOCKOUT
UV
18V
LT1241 • TA05
OUTPUT
I
SENSE
GND
V
CC
7
6
5
3