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LSP5502SAC PDF预览

LSP5502SAC

更新时间： 2024-10-18 05:34:43
品牌 Logo 应用领域
台湾光宝 - LITEON 开关光电二极管
页数 文件大小 规格书
11页 292K
描述
DC-DC同步降压IC

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中文翻译

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LSP5502SAC 技术参数

生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.74
Is Samacsys：N其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.925V TO 24V
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
最大输入电压：27 V最小输入电压：4.5 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G8
长度：4.9 mm功能数量：1
端子数量：8最高工作温度：85 °C
最低工作温度：-20 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE认证状态：Not Qualified
座面最大高度：1.75 mm表面贴装：YES
切换器配置：BUCK最大切换频率：470 kHz
温度等级：OTHER端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
宽度：3.9 mmBase Number Matches：1

LSP5502SAC 数据手册

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Liteon Semiconductor Corporation  
LSP5502  
2A Synchronous Rectified Step Down DC/DC Converter  
„ FEATURES  
„ GENERAL DESCRIPTION  
z
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z
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2A Output Current  
Wide 4.5V to 30V Operating Input Range  
The LSP5502 is a monolithic synchronous buck  
regulator. The device integrates 100mΩ MOSFETS  
that provide 2A continuous load cur-rent over a wide  
operating input voltage of 4.5V to 30V. Current mode  
control provides fast transient response and  
cycle-by-cycle cur-rent limit.  
An adjustable soft-start prevents inrush current at turn  
on. In shutdown mode, the supply cur-rent drops  
below 1µA.  
Integrated 100mΩ Power MOSFET Switches  
Output Adjustable from 0.925V to 28V  
Up to 96% Efficiency  
Programmable Soft-Start  
Stable with Low ESR Ceramic Output Capacitors  
Fixed 400KHz Frequency  
Cycle-by-Cycle Over Current Protection  
Input Under Voltage Lockout  
8-Pin SOP Package  
This device, available in an 8-pin SOP package,  
provides a very compact system solution with minimal  
reliance on external components.  
„ TYPICAL APPLICATION  
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Distributed Power Systems  
Networking Systems  
FPGA, DSP, ASIC Power Supplies  
Green Electronics/ Appliances  
Notebook Computers  
„ PIN ASSIGNMENT  
(Top View)  
„ PIN DESCRIPTION  
Name  
No.  
Description  
Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver.  
Connect a 0.1uF capacitor between BS and SW.  
BS  
1
Input Supply. Bypass this pin to G with a low ESR capacitor. See Input Capacitor  
in the Application Information section.  
IN  
2
SW  
G
3
4
Switch Output. Connect this pin to the switching end of the inductor.  
Ground.  
Feedback Input. The voltage at this pin is regulated to 0.925V. Connect to the  
resistor divider between output and ground to set output voltage.  
Compensation Pin. See Stability Compensation in the Application Information  
section.  
FB  
5
6
COMP  
Enable Input. When higher than 2.5V, this pin turns the IC on. When lower than  
1.3V, this pin turns the IC off. Output voltage is discharged when the IC is off.  
When left unconnected, EN is pulled high internally.  
Soft-Start Control Input. SS controls the soft-start period. Connect a capacitor from  
SS to GND to set the soft-start period. A 0.1µF capacitor sets the soft-start period  
to 15ms. To disable the soft-start feature, leave SS unconnected.  
EN  
SS  
7
8
Rev1.1  
1/11  
1234567...11

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