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LT1425CS PDF预览

LT1425CS

更新时间: 2024-09-29 22:51:51
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
20页 344K
描述
Isolated Flyback Switching Regulator

LT1425CS 技术参数

是否Rohs认证:不符合生命周期:Transferred
零件包装代码:SOIC包装说明:SOP, SOP16,.25
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.13Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:20 V
最小输入电压:3 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G16JESD-609代码:e0
长度:4.9025 mm湿度敏感等级:1
功能数量:1端子数量:16
最大输出电流:1.9 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):235认证状态:Not Qualified
座面最大高度:1.752 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK-BOOST
最大切换频率:320 kHz技术:BIPOLAR
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:20宽度:3.899 mm
Base Number Matches:1

LT1425CS 数据手册

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LT1425  
Isolated Flyback  
Switching Regulator  
U
FEATURES  
DESCRIPTION  
The LT®1425 is a monolithic high power switching regu-  
lator specifically designed for the isolated flyback topol-  
ogy. No “third winding” or optoisolator is required; the  
integrated circuit senses the isolated output voltage  
directly from the primary side flyback waveform. A high  
current, high efficiency switch is included on the die along  
with all oscillator, control and protection circuitry.  
No Transformer “Third Winding” or Optoisolator  
Required  
±5% Accurate Output Voltage Without User Trims  
(See Circuit Below)  
Resistor Programmable Output Voltage  
Regulation Maintained Well Into Discontinuous  
Mode (Light Load)  
Optional Load Compensation  
The LT1425 operates with input supply voltages from 3V  
to 20V and draws only 7mA quiescent current. It can  
deliver output power up to 6W with no external power  
devices. Byutilizingcurrentmodeswitchingtechniques, it  
provides excellent AC and DC line regulation.  
Operating Frequency: 285kHz  
Easily Synchronized to External Clock  
Available in 16-Pin Narrow SO Package  
U
APPLICATIONS  
The LT1425 has a number of features not found on other  
switching regulator ICs. Its unique control circuitry can  
maintain regulation well into discontinuous mode in most  
applications. Optional load compensation circuitry allows  
for improved load regulation. An externally activated shut-  
down mode reduces total supply current to 15µA for  
standby operation.  
Isolated Flyback Switching Regulators  
Ethernet Isolated 5V to 9V Converters  
Medical Instruments  
Isolated Telecom Supplies  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
5V to Isolated 9VOUT  
Load Regulation  
500V  
9.5  
9.4  
9.3  
9.2  
9.1  
9.0  
8.9  
8.8  
8.7  
8.6  
8.5  
ISOLATION BARRIER  
5V  
T1*  
V
+
C1  
100µF  
10V  
C2  
ISOLATED  
–9V ±5% AT  
20mA TO 200mA  
D1  
1N5819  
12  
47µF  
+
16V  
V
IN  
11  
3
V
SW  
R1  
22.6k  
1%  
F
LT1425  
*DALE LPE 4841-330MB  
15  
R
FB  
SHDN  
R2  
3.01k  
1%  
6
SYNC  
5
4
R
V
C
REF  
C3  
1000pF  
14  
13  
R
OCOMP  
0
50  
100  
150  
200  
R3  
15k  
R
CCOMP  
C4  
0.1µF  
OUTPUT CURRENT (mA)  
SGND PGND  
10  
1425 TA02  
7
1425 TA01  
1

LT1425CS 替代型号

型号 品牌 替代类型 描述 数据表
LT1425CS#PBF Linear

完全替代

LT1425 - Isolated Flyback Switching Regulators; Package: SO; Pins: 16; Temperature Range:
LT1425CS#TR Linear

类似代替

LT1425 - Isolated Flyback Switching Regulators; Package: SO; Pins: 16; Temperature Range:

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