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LM20123MHE PDF预览

LM20123MHE

更新时间： 2024-02-10 15:16:20
品牌 Logo 应用领域
德州仪器 - TI 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
29页 1259K
描述
LM20123/LM20123Q 3A, 1.5MHz PowerWise Synchronous Buck Regulator

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中文翻译

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LM20123MHE 技术参数

生命周期：Obsolete包装说明：HTSSOP,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.72
其他特性：SEATED HGT-NOM, ADJUSTABLE OUTPUT VOLTAGE DOWN TO 0.8V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：5.5 V最小输入电压：2.95 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G16
长度：5 mm功能数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：5.3 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
座面最大高度：1.1 mm表面贴装：YES
切换器配置：BUCK最大切换频率：1500 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：4.4 mmBase Number Matches：1

LM20123MHE 数据手册

 浏览型号LM20123MHE的Datasheet PDF文件第2页浏览型号LM20123MHE的Datasheet PDF文件第3页浏览型号LM20123MHE的Datasheet PDF文件第4页浏览型号LM20123MHE的Datasheet PDF文件第5页浏览型号LM20123MHE的Datasheet PDF文件第6页浏览型号LM20123MHE的Datasheet PDF文件第7页 
LM20123  
www.ti.com  
SNVS524E –OCTOBER 2007–REVISED MARCH 2013  
LM20123/LM20123Q 3A, 1.5MHz PowerWise® Synchronous Buck Regulator  
Check for Samples: LM20123  
1
FEATURES  
DESCRIPTION  
The LM20123 is a full featured 1.5 MHz synchronous  
buck regulator capable of delivering up to 3A of  
continuous output current. The current mode control  
loop can be compensated to be stable with virtually  
any type of output capacitor. For most cases,  
compensating the device only requires two external  
components, providing maximum flexibility and ease  
of use. The device is optimized to work over the input  
voltage range of 2.95V to 5.5V making it suited for a  
wide variety of low voltage systems.  
2
•
LM20123Q is AEC-Q100 Qualified and  
Manufactured on an Automotive Grade Flow  
•
•
Input Voltage Range 2.95V to 5.5V  
Accurate Current Limit Minimizes Inductor  
Size  
•
96% Efficiency with 1.5 MHz Switching  
Frequency  
•
•
•
•
•
•
•
•
32 mΩ Integrated FET Switches  
Starts up into Pre-Biased Loads  
Output Voltage Tracking  
The device features internal over voltage protection  
(OVP) and over current protection (OCP) circuits for  
increased system reliability. A precision enable pin  
and integrated UVLO allows the turn on of the device  
to be tightly controlled and sequenced. Start-up  
inrush currents are limited by both an internally fixed  
and externally adjustable Soft-Start circuit. Fault  
detection and supply sequencing is possible with the  
integrated power good circuit.  
Peak Current Mode Control  
Adjustable Output Voltage Down to 0.8V  
Adjustable Soft-Start with External Capacitor  
Precision Enable Pin with Hysteresis  
Integrated OVP, UVLO, Power Good and  
Thermal Shutdown  
The LM20123 is designed to work well in multi-rail  
power supply architectures. The output voltage of the  
device can be configured to track a higher voltage rail  
using the SS/TRK pin. If the output of the LM20123 is  
pre-biased at startup it will not sink current to pull the  
output low until the internal soft-start ramp exceeds  
the voltage at the feedback pin.  
•
HTSSOP (16-Pins) Exposed Pad Package  
APPLICATIONS  
•
•
•
Simple to Design, High Efficiency Point of  
Load Regulation from a 5V or 3.3V Bus  
High Performance DSPs, FPGAs, ASICs and  
Microprocessors  
The LM20123 is offered in a 16-pin HTSSOP  
package with an exposed pad that can be soldered to  
the PCB, eliminating the need for bulky heatsinks.  
Broadband, Networking and Optical  
Communications Infrastructure  
Typical Application Circuit  
L
LM20123  
V
OUT  
SW  
FB  
V
IN  
PVIN  
EN  
R
R
FB1  
C
IN  
R
F
C
OUT  
FB2  
AVIN  
PGOOD  
VCC  
C
F
COMP  
C
VCC  
SS/TRK  
AGND  
R
C1  
PGND  
C
SS  
(optional)  
C
C1  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007–2013, Texas Instruments Incorporated  
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LM20123MHE 替代型号

型号 品牌 替代类型 描述 数据表
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