參數(shù)資料
型號(hào): LT3575EFE#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 4.2 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝: 4.40 MM, LEAD FREE, PLASTIC, TSSOP-16
文件頁數(shù): 1/24頁
文件大?。?/td> 240K
代理商: LT3575EFE#PBF
LT3575
1
3575f
FEATURES
APPLICATIONS
DESCRIPTION
Isolated Flyback Converter
without an Opto-Coupler
The LT3575 is a monolithic switching regulator specic-
ally designed for the isolated yback topology. No third
winding or optoisolator is required for regulation. The
part senses the isolated output voltage directly from the
primary side yback waveform. A 2.5A, 60V NPN power
switch is integrated along with all control logic into a
16-lead TSSOP package.
The LT3575 operates with input supply voltages from
3V to 40V, and can deliver output power up to 14W with
no external power switch.The LT3575 utilizes boundary
mode operation to provide a small magnetic solution with
improved load regulation.
The output voltage is easily set with two external resistors
and the transformer turns ratio. Off the shelf transformers
are available for many applications.
5V Isolated Flyback Converter
n 3V to 40V Input Voltage Range
n 2.5A, 60V Integrated NPN Power Switch
n Boundary Mode Operation
n No Transformer Third Winding or
Optoisolator Required for Regulation
n Improved Primary-Side Winding Feedback
Load Regulation
n VOUT Set with Two External Resistors
n BIAS Pin for Internal Bias Supply and Power
NPN Driver
n Programmable Soft-Start
n Programmable Power Switch Current Limit
n Thermally Enhanced 16-Lead TSSOP
n Industrial, Automotive and Medical Isolated
Power Supplies
Load Regulation
SHDN/UVLO
TC
RILIM
SS
RFB
RREF
SW
VC
GND
TEST BIAS
LT3575
3575 TA01
28.7k
10k
11.5k
VIN
12V TO 24V
VIN
357k
51.1k
10μF
0.22μF1k
24μH
10nF
4.7nF
4.7μF
6.04k
80.6k
VOUT
+
5V, 1.4A
VOUT
3:1
2.6μH47μF
IOUT (A)
0
OUTPUT
VOL
TAGE
ERROR
(%)
0
–1
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
–2
1
3575 TA01b
VIN = 12V
VIN = 24V
TYPICAL APPLICATION
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and No RSENSE and ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
相關(guān)PDF資料
PDF描述
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