LT3574IMS Просмотр технического описания (PDF) - Linear Technology
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LT3574IMS Datasheet PDF : 24 Pages
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LT3574
Typical Application
VIN
10V TO 30V
10V to 30VIN, +5V/–5VOUT Isolated Flyback Converter
C1
10µF
R1
VIN
357k
R2
51.1k
SHDN/UVLO
LT3574
TC
RILIM
SS
RFB
RREF
SW
T1
3:1:1:1
D1
C6
0.22µF
R8
2k
L1A •
63µH
L1B
7µH
•
D4
R3
80.6k
L1C
•7µH D2
R4
6.04k
VOUT +
5V
175mA
C5
47µF
COM
C6
47µF VOUT–
– 5V
175mA
R5
R6
28.7k 10k
VC
GND TEST BIAS
R7
40.2k
C2
C3
10nF
2700pF
C4
4.7µF
D3
*OPTIONAL THIRD
WINDING FOR
>24V OPERATION
L1D
7µH
D1, D2: B340A
D4: PMEG6010
T1: WÜRTH ELEKTRONIK 750310564
3574 TA11
Related Parts
PART NUMBER
LT3573
LT3757
DESCRIPTION
Isolated Flyback Switching Regulator with 60V
Integrated Switch
Boost, Flyback, SEPIC and Inverting Controller
LT3758
Boost, Flyback, SEPIC and Inverting Controller
LT3837
Isolated No-Opto Synchronous Flyback Controller
LT3825
Isolated No-Opto Synchronous Flyback Controller
LT1725
Isolated No-Opto Flyback Controller
LT1737
Isolated No-Opto Flyback Controller
LTC®1871/LTC1871-1 No RSENSE™ Low Quiescent Current Flyback, Boost
LTC1871-7
and SEPIC Controllers
LTC3803/LTC3803-3 200kHz or 300kHz Flyback DC/DC Controllers
LTC3803-5
LTC3873/LTC3873-5 No RSENSE Constant Frequency Flyback, Boost,
SEPIC Controllers
LTC3805/LTC3805-5 Adjustable Fixed 70kHz to 700kHz Operating
Frequency Flyback Controllers
COMMENTS
3V ≤ VIN ≤ 40V, No Opto-Isolator or “Third Winding” Required, Up to 7W,
MSOP-16E
2.9V ≤ VIN ≤ 40V, Current Mode Control, 100kHz to 1MHz Programmable
Operation Frequency, 3mm × 3mm DFN-10 and MSOP-10E Package
5.5V ≤ VIN ≤ 100V, Current Mode Control, 100kHz to 1MHz Programmable
Operation Frequency, 3mm × 3mm DFN-10 and MSOP-10E Package
Ideal for VIN from 4.5V to 36V Limited by External Components, Up to 60W,
Current Mode Control
VIN from 16V to 75V Limited by External Components, Up to 60W,
Current Mode Control
VIN and VOUT Limited Only by External Components, Ideal for 48V Nominal
Input Voltage
VIN and VOUT Limited Only by External Components, Ideal for 24V Nominal
Input Voltage
Adjustable Switching Frequency, 2.5V ≤ VIN ≤ 36V, Burst Mode® Operation at
Light Loads
VIN and VOUT Limited Only by External Components, 6-Pin ThinSOT™
Package
VIN and VOUT Limited Only by External Components, 2mm × 3mm DFN-8
or 8-Pin ThinSOT Packages
VIN and VOUT Limited Only by External Components, 3mm × 3mm DFN-10,
MSOP-10E
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3574f
LT 0110 • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2010
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