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LMR14050SQDDARQ1 PDF预览

LMR14050SQDDARQ1

更新时间： 2024-11-24 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管转换器
页数 文件大小 规格书
37页 1765K
描述
具有 40uA IQ 的 SIMPLE SWITCHER® 汽车类 40V、5A 2.2MHz 降压转换器 | DDA | 8 | -40 to 125

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中文翻译

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LMR14050SQDDARQ1 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HSOP,
Reach Compliance Code：compliantECCN代码：EAR99
Factory Lead Time：6 weeks风险等级：1.67
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 28V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：40 V最小输入电压：4 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G8
湿度敏感等级：2功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：9.7 A
最大输出电压：28 V最小输出电压：0.8 V
封装主体材料：PLASTIC/EPOXY封装代码：HSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG
筛选级别：AEC-Q100表面贴装：YES
切换器配置：BUCK最大切换频率：2500 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
Base Number Matches：1

LMR14050SQDDARQ1 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
LMR14050-Q1  
SNVSAG2A –NOVEMBER 2015–REVISED JULY 2016  
®
LMR14050-Q1 SIMPLE SWITCHER 40 V, 5 A Step-Down Converter with 40 µA IQ  
1 Features  
3 Description  
The LMR14050-Q1 is a 40 V, 5 A step down  
regulator with an integrated high-side MOSFET. With  
a wide input range from 4 V to 40 V, it’s suitable for  
various applications from industrial to automotive for  
power conditioning from unregulated sources. An  
extended family is available in 2 A and 3.5 A options  
in pin-to-pin compatible packages, including  
LMR14020-Q1 and LMR14030-Q1. The regulator’s  
quiescent current is 40 µA in Sleep-mode, which is  
suitable for battery powered systems. An ultra-low 1  
μA current in shutdown mode can further prolong  
battery life. A wide adjustable switching frequency  
range allows either efficiency or external component  
size to be optimized. Internal loop compensation  
means that the user is free from the tedious task of  
loop compensation design. This also minimizes the  
external components of the device. A precision  
enable input allows simplification of regulator control  
and system power sequencing. The device also has  
built-in protection features such as cycle-by-cycle  
current limit, thermal sensing and shutdown due to  
excessive power dissipation, and output overvoltage  
protection.  
1
•
Qualified for Automotive Applications  
•
AEC-Q100 Qualified With the Following Results:  
- Device Temperature Grade 1: -40 °C to 125 °C  
Ambient Operating Temperature Range  
- Device HBM ESD Classification Level H1C  
- Device CDM ESD Classification Level C4A  
•
•
•
•
•
•
•
4 V to 40 V Input Range  
5 A Continuous Output Current  
Ultra-low 40 µA Operating Quiescent Current  
90 mΩ High-Side MOSFET  
Minimum Switch-On Time: 75 ns  
Current Mode Control  
Adjustable Switching Frequency from 200 kHz to  
2.5 MHz  
•
•
•
•
•
•
•
•
•
Frequency Synchronization to External Clock  
Spread Spectrum Option for Reduced EMI  
Internal Compensation for Ease of Use  
High Duty Cycle Operation Supported  
Precision Enable Input  
The LMR14050-Q1 is available in an 8-pin HSOIC or  
10-pin WSON package with exposed pad for low  
thermal resistance.  
1 µA Shutdown Current  
External Soft-start  
Thermal, Overvoltage and Short Protection  
8-Pin HSOIC with PowerPAD™ Package  
(1)  
Device Information  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
2 Applications  
LMR14050SQDDARQ1  
HSOIC (8)  
4.89 mm x 3.90 mm  
LMR14050SSQDDARQ1  
(Spread Spectrum)  
•
•
•
•
Automotive Battery Regulation  
Industrial Power Supplies  
Telecom and Datacom Systems  
General Purpose Wide Vin Regulation  
space  
HSOIC (8)  
WSON (10)  
WSON (10)  
4.89 mm x 3.90 mm  
4.10 mm x 4.10 mm  
4.10 mm x 4.10 mm  
LMR14050QDPRRQ1  
LMR14050SQDPRRQ1  
(Spread Spectrum)  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
Simplified Schematic  
Efficiency vs Output Current  
VIN up to 40 V  
100  
90  
80  
70  
60  
50  
40  
30  
CIN  
VIN  
BOOT  
SW  
EN  
CBOOT  
L
VOUT  
RT/SYNC  
RT  
D
RFBT  
COUT  
SS  
RFBB  
FB  
CSS  
GND  
20  
VOUT = 5 V  
VOUT = 3.3 V  
10  
0
VIN = 12 V, ÖSW = 300 kHz  
0.01  
0.001  
0.1  
1 10  
IOUT (A)  
D001  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
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