Datasheet

LT4430
26
4430fc
For more information www.linear.com/LT4430
 LINEAR TECHNOLOGY CORPORATION 2004
LT 1013 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com/LT4430
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LT1952/LT1952-1 Isolated Synchronous Forward Controllers Ideal for Medium Power 24V and 48V Input Applications
LTC3765/LTC3766 Isolated Synchronous No-Opto Forward Controller Chip Set Ideal for Medium Power 24V and 48V Input Applications
LTC3723-1/LTC3723-2 Synchronous Push-Pull and Full-Bridge Controllers High Efficiency with On-Chip MOSFET Drivers
LTC3721-1/LTC3721-2 Non-Synchronous Push-Pull and Full-Bridge Controllers Minimizes External Components, On-Chip MOSFET Drivers
LTC3722/LTC3722-2 Synchronous Isolated Full Bridge Controllers Ideal for High Power 24V and 48V Input Applications
LTC3900 Synchronous Rectifier Driver for Forward Converters Programmable Timeout, Synchronization Sequencer, Reverse
Inductor Current Sense
LTC3901 Synchronous Rectifier Driver for Push-Pull and Full-Bridge Programmable Timeout, Synchronization Sequencer, Reverse
Inductor Current Sense
LTC3803/LTC3803-3/
LTC3803-5
Flyback DC/DC Controller with Fixed 200kHz or 300kHz
Operating Frequency
V
IN
and V
OUT
Limited by External Components, 6-pin ThinSoT
Package
LTC3805/LTC3805-5 Adjustable Constant Frequency (70KHz to 700kHz) Frequency
Flyback DC/DC Controller
V
IN
and V
OUT
Limited by External Components, MSOP-10E and
3mm × 3mm DFN-10 Packages
LT3748 100V No Opto Flyback Controller 5V ≤ V
IN
≤ 100V, Boundary Mode Operation, MSOP-16 with Extra
High Voltage Pin Spacing
LT3798 Off-Line Isolated No-Opto Flyback Controller with Active PFC V
IN
and V
OUT
Limited by External Components
5V, 2A Isolated Flyback Telecom Converter Start-Up Waveforms with Overshoot Control Implemented
•
•
36V TO 72V
V
IN
–V
IN
4430 TA02
5V
2A
9, 10
CTX-02-15242
T1
11, 12
2
4
R7
11k
1%
R10
680Ω
C1 = TDK, X7R
CO1, C02, C03 = TDK, X5R
D1, D2, D3 = PHILIPS
D4 = MICROSEMI
Q1 = FAIRCHILD
Q2 = DIODES, INC.
T1 = COOPER
MOC207 = FAIRCHILD
D5
MBR0530
R9
1k
C7
0.1µF
C5
1µF
R8
1500Ω
1%
V
IN
OPTO
CO3
100µF
6.3V
GND COMP
OC FB
MOC207
Q1
FDC2512
Q2
MMBTA42
LT4430
ISOLATION
BARRIER
C3
150pF
200V
C8
0.047µF
C6
0.033µF
C4
2200pF
250V
8.5V
CO2
100µF
6.3V
CO1
100µF
6.3V
D4
UPS840
D3
BAS516
D1
PDZ-9.1B
9.1V
8.5V
D2
BAS516
R6
470k
R5
6.8k
R1
220k
R2
100k
R4
220Ω
C2
1µF
10V
C1
1µF
100V
R
CS
0.068Ω
R3
4.7k
I
TH
/RUN
I
TH
/SHDN
NGATE
GND V
CC
FB SENSE
LTC3803