参数资料
型号: 750106
厂商: Wurth Electronics Inc
文件页数: 1/24页
文件大小: 0K
描述: BOARD EVAL FOR LT3575
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,隔离
功率 - 输出: 10W
输出电压: 5V
电流 - 输出: 2A(最小值)
输入电压: 10 ~ 28 VDC
稳压器拓扑结构: 回扫
板类型: 完全填充
已供物品:
已用 IC / 零件: LT3575
相关产品: LT3575IFE#TRPBF-ND - IC REG FLYBACK ISO ADJ 16TSSOP
LT3575IFE#PBF-ND - IC REG FLYBACK ISO ADJ 16TSSOP
LT3575EFE#TRPBF-ND - IC REG FLYBACK ISO ADJ 16TSSOP
LT3575EFE#PBF-ND - IC REG FLYBACK ISO ADJ 16TSSOP
其它名称: 732-3306
LT3575
Isolated Flyback Converter
without an Opto-Coupler
FEATURES
DESCRIPTION
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3V to 40V Input Voltage Range
2.5A, 60V Integrated NPN Power Switch
Boundary Mode Operation
No Transformer Third Winding or
Optoisolator Required for Regulation
Improved Primary-Side Winding Feedback
Load Regulation
V OUT Set with Two External Resistors
BIAS Pin for Internal Bias Supply and Power
NPN Driver
Programmable Soft-Start
Programmable Power Switch Current Limit
Thermally Enhanced 16-Lead TSSOP
The LT ? 3575 is a monolithic switching regulator speci?c-
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
APPLICATIONS
and the transformer turns ratio. Off the shelf transformers
are available for many applications.
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Industrial, Automotive and Medical Isolated
Power Supplies
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.
TYPICAL APPLICATION
5V Isolated Flyback Converter
V IN
12V TO 24V
1
Load Regulation
V OUT
10 μF
357k
V IN
0.22 μ F
1k
3:1
+
5V, 1.4A
V IN = 24V
SHDN /UVLO
24 μ H
2.6 μ H
47 μ F
51.1k
80.6k
V OUT–
0
V IN = 12V
LT3575
R FB
R REF
TC
R ILIM
SS
SW
6.04k
–1
VC
GND
TEST BIAS
–2
28.7k
10k
10nF
11.5k
4.7nF
4.7 μ F
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
I OUT (A)
3575 TA01b
3575 TA01
3575f
1
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