ltc3803es6-5 Linear Technology Corporation, ltc3803es6-5 Datasheet - Page 16

• Manufacturer Part Number: ltc3803es6-5
• Description: Constant Frequency Current Mode Flyback Dc/dc Controller In Thinsot
• Manufacturer: Linear Technology Corporation

T1: PULSE ENGINEERING PA1006
Q1: FAIRCHILD FDC2512
Q2: VISHAY Si9803
RELATED PARTS
PART NUMBER
LT
LT1725
LTC1772
LTC1871
LTC1872
LT1950
LT1952
LT3420
LT3468/LT3468-1
LTC3806
LTC4441
Burst Mode is a registered trademark of Linear Technology Corporation. No R
LTC3803-5
TYPICAL APPLICATIO S
16
®
1n
8.06k
1425
25.5k*
R
FB
33k
V
OUT
90% Efficient Synchronous Flyback Converter
1
2
3
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
V
GND
I
TH
FB
/RUN
LTC3803-5
36V TO 72V
SENSE
GATE
V
V
IN
CC
270k
D1: PHILIPS BAS516
C
C
DESCRIPTION
Isolated Flyback Switching Regulator
with No External Power Devices
General Purpose Isolated Flyback Controller
SOT-23 Constant Frequency Current Mode Step-Down
DC/DC Controller
Wide Input Range, No R
Flyback, Boost and SEPIC Controller
SOT-23 Constant Frequency Current Mode Boost DC/DC
Controller
Current Mode PWM Controller
Current Mode PWM Controller
Photoflash Capacitor Charger with Automatic Refresh
Photoflash Capacitor Charger in 5-Pin SOT-23
Synchronous Flyback Controller
6A N-Channel MOSFET Driver
●
1μF
10V
IN
O
6
5
4
FAX: [phone]
: TDK 100μF, 6.3V, X5R
: TDK 1μF, 100V, X5R
560
5k
R
CS
C
Q1
IN
•
U
T1
R
*FOR 5V OUTPUT CHANGE
R
CS
FB
•
•
●
: VISHAY OR IRC, 80mΩ
TO 42.2k
SENSE
www.linear.com
Q2
D1
TM
Current Mode
38035 TA04a
C
0.1μF
O
V
3.3V
1.5A
OUT
*
91
90
89
88
Synchronous Flyback 3.3V
0.5
SENSE
is a trademark of Linear Technology Corporation.
OUTPUT CURRENT (A)
1.0
COMMENTS
No Optoisolator or “Third Winding” Required, Up to 6W Output
No Optoisolator Required, V
Power Components
550kHz Switching Frequency, 2.4V to 9.8V V
Adjustable Switching Frequency, Programmable Undervoltage
Lockout, Optional Burst Mode
550kHz Switching Frequency, 2.4V to 9.8V V
Controller for Forward Converters from 30W to 300W
Synchronous Controller for Forward Converters from
30W to 500W
Specialized Flyback Charges High Voltage Photoflash Capacitors
Quickly and Efficiently
Minimal Component Count, Uses Small Transformers;
V
High Efficiency (89%); Multiple Output with
Excellent Cross Regulation
Gate Drive Adjustable from 5V to 8V, Adjustable Blanking
Prevents Ringing, 10-Lead MSSOP Package
IN
from 2.5V to 16V
1.5
38035 TA04b
OUT
2.0
IN
© LINEAR TECHNOLOGY CORPORATION 2004
92
91
90
89
88
87
86
85
®
and V
0.5
Synchronous Flyback 5V
Operation at Light Load
LT 0407 REV B • PRINTED IN THE USA
OUT
1.0
Limited Only by External
OUTPUT CURRENT (A)
IN
IN
Range
Range
1.5
2.0
38035 TA04c
OUT
38035fb
2.5