Datasheet

LT3574
24
3574f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2010
LT 0110 • PRINTED IN USA
relateD parts
typical application
10V to 30V
IN
, +5V/–5V
OUT
Isolated Flyback Converter
SHDN/UVLO
TC
SS
SW
VC GND BIAS
LT3574
3574 TA11
R5
28.7k
R6
10k
V
IN
10V TO 30V
V
IN
T1
3:1:1:1
R1
357k
R2
51.1k
C1
10
µF
L1A
63
µH
R4
6.04k
R3
80.6k
V
OUT
+
5V
175mA
COM
V
OUT
–
–5V
175mA
D1
C5
47
µF
D2
C6
47
µF
L1B
7µH
L1C
7µH
C3
2700pF
R7
40.2k
C4
4.7µF
C2
10nF
*OPTIONAL THIRD
WINDING FOR
>24V OPERATION
D1, D2: B340A
D4: PMEG6010
T1: W
ÜRTH ELEKTRONIK 750310564
D3
L1D
7
µH
R8
2k
D4
•
•
•
C6
0.22
µF
TEST
R
ILIM
R
FB
R
REF
PART NUMBER DESCRIPTION COMMENTS
LT3573 Isolated Flyback Switching Regulator with 60V
Integrated Switch
3V ≤ V
IN
≤ 40V, No Opto-Isolator or “Third Winding” Required, Up to 7W,
MSOP-16E
LT3757 Boost, Flyback, SEPIC and Inverting Controller 2.9V ≤ V
IN
≤ 40V, Current Mode Control, 100kHz to 1MHz Programmable
Operation Frequency, 3mm × 3mm DFN-10 and MSOP-10E Package
LT3758 Boost, Flyback, SEPIC and Inverting Controller 5.5V ≤ V
IN
≤ 100V, Current Mode Control, 100kHz to 1MHz Programmable
Operation Frequency, 3mm × 3mm DFN-10 and MSOP-10E Package
LT3837 Isolated No-Opto Synchronous Flyback Controller Ideal for V
IN
from 4.5V to 36V Limited by External Components, Up to 60W,
Current Mode Control
LT3825 Isolated No-Opto Synchronous Flyback Controller V
IN
from 16V to 75V Limited by External Components, Up to 60W,
Current Mode Control
LT1725 Isolated No-Opto Flyback Controller V
IN
and V
OUT
Limited Only by External Components, Ideal for 48V Nominal
Input Voltage
LT1737 Isolated No-Opto Flyback Controller V
IN
and V
OUT
Limited Only by External Components, Ideal for 24V Nominal
Input Voltage
LTC
®
1871/LTC1871-1
LTC1871-7
No R
SENSE
™ Low Quiescent Current Flyback, Boost
and SEPIC Controllers
Adjustable Switching Frequency, 2.5V ≤ V
IN
≤ 36V, Burst Mode
®
Operation at
Light Loads
LTC3803/LTC3803-3
LTC3803-5
200kHz or 300kHz Flyback DC/DC Controllers V
IN
and V
OUT
Limited Only by External Components, 6-Pin ThinSOT™
Package
LTC3873/LTC3873-5 No R
SENSE
Constant Frequency Flyback, Boost,
SEPIC Controllers
V
IN
and V
OUT
Limited Only by External Components, 2mm × 3mm DFN-8
or 8-Pin ThinSOT Packages
LTC3805/LTC3805-5 Adjustable Fixed 70kHz to 700kHz Operating
Frequency Flyback Controllers
V
IN
and V
OUT
Limited Only by External Components, 3mm × 3mm DFN-10,
MSOP-10E