LT1245CS8#PBF Linear Technology, LT1245CS8#PBF Datasheet - Page 16

• Manufacturer Part Number: LT1245CS8#PBF
• Description: IC PWM CURRENT MODE HI-SPD 8SOIC
• Manufacturer: Linear Technology

Specifications of LT1245CS8#PBF

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 48%
• 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
• Number Of Pwm Outputs: 1
• On/off Pin: No
• Adjustable Output: No
• Switching Freq: 500KHz
• Operating Supply Voltage (max): 25V
• Output Current: 1A
• Synchronous Pin: No
• Rise Time: 50ns
• Fall Time: 30ns
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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