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LT1072CSW#TRPBF

更新时间： 2024-11-24 13:09:31
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
16页 197K
描述
LT1072 - 1.25A High Efficiency Switching Regulator; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C

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中文翻译

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LT1072CSW#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SOIC包装说明：SOP, SOP16,.4
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11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：60 V最小输入电压：3 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：10.2995 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：100 °C
最低工作温度：最大输出电流：1.25 A
标称输出电压：1.24 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.4
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：250认证状态：Not Qualified
座面最大高度：2.642 mm最大供电电流 (Isup)：9 mA
表面贴装：YES切换器配置：BOOST
最大切换频率：47 kHz技术：BIPOLAR
温度等级：OTHER端子面层：Matte Tin (Sn)
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：40
宽度：7.493 mmBase Number Matches：1

LT1072CSW#TRPBF 数据手册

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LT1072  
1.25A High Efficiency  
Switching Regulator  
U
FEATURES  
DESCRIPTIO  
The LT®1072 is a monolithic high power switching  
regulator. It can be operated in all standard switching  
configurations including buck, boost, flyback, forward,  
inverting and “Cuk”. A high current, high efficiency switch  
is included on the die along with all oscillator, control, and  
protection circuitry. Integration of all functions allows the  
LT1072 to be built in a standard 5-pin TO-3 or TO-220  
power package as well as the 8-pin miniDlP. This makes it  
extremelyeasytouseandprovides“bustproof”operation  
similar to that obtained with 3-pin linear regulators.  
■
Available in MiniDiP, TO-220, and TO-3 Packages  
■
Wide Input Voltage Range 3V to 60V  
■
Low Quiescent Current—6mA  
■
Internal 1.25A Switch  
■
Very Few External Parts Required  
■
Self-Protected Against Overloads  
■
Operates in Nearly All Switching Topologies  
■
Shutdown Mode Draws Only 50µA Supply Current  
■
Flyback-Regulated Mode has Fully Floating Outputs  
■
Can be Externally Synchronized  
U
TheLT1072operateswithsupplyvoltagesfrom3Vto60V,  
and draws only 6mA quiescent current. It can deliver load  
power up to 20 watts with no external power devices. By  
utilizing current-mode switching techniques, it provides  
excellent AC and DC load and line regulation.  
APPLICATIO S  
■
Logic Supply 5V at 2.5A  
5V Logic to ±15V Op Amp Supply  
■
■
Offline Converter up to 50W  
Battery Upconverter  
■
The LT1072 has many unique features not found even on  
the vastly more difficult to use low power control chips  
presently available. It uses an adaptive anti-sat switch  
drive to allow very wide ranging load currents with no loss  
in efficiency. An externally activated shutdown mode  
reduces total supply current to 50µA typical for standby  
operation. Totally isolated and regulated outputs can be  
generatedbyusingtheoptional“flybackregulationmode”  
builtintotheLT1072, withouttheneedforoptocouplersor  
extra transformer windings.  
■
Power lnverter (+ to –) or (– to +)  
■
Fully Floating Multiple Outputs  
■
Driver for High Current Supplies  
USER NOTE:  
This data sheet is only intended to provide specifications, graphs, and a general functional  
description of the LT1072. Application circuits are included to show the capability of the LT1072.  
A complete design manual (AN-19) should be obtained to assist in developing new designs. This  
manualcontainsacomprehensivediscussionofboththeLT1070andtheexternalcomponentsused  
with it, as well as complete formulas for calculating the values of these components. The manual  
can also be used for the LT1072 by factoring in the lower switch current rating.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Boost Converter (5V to 12V)  
Maximum Output Power*  
25  
5V  
220µH**  
20  
V
IN  
V
SW  
BUCK-BOOST  
V
= 30V  
O
15  
10  
5
12V, 0.25A  
LT1072  
+
–
C3  
25µF*  
FLYBACK  
ISOLATED  
10.7k  
1.24k  
BOOST  
FB  
GND  
V
C
+
–
470µF  
1k  
+
–
BUCK-BOOST  
1µF  
V
= 5V  
O
0
0
10  
20  
30  
40  
50  
*REQUIRED IF INPUT LEADS ≥ 2”  
**PULSE ENGINEERING 52626  
LT1072 • TA01  
INPUT VOLTAGE (V)  
*ROUGH GUIDE ONLY. BUCK MODE P = 1A x V  
.
OUT  
OUT  
MINIDIP OUTPUT POWER MAY BE LIMITED BY PACKAGE TEMPERATURE  
RISE AT HIGH INPUT VOLTAGES OR HIGH DUTY CYCLES  
LT1072 • TA02  
1072fc  
1
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