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TPS54340DDA

更新时间： 2024-11-21 12:00:35
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德州仪器 - TI 转换器
页数 文件大小 规格书
43页 1949K
描述
42 V Input, 3.5 A, Step Down DC-DC Converter with Eco-mode

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TPS54340DDA 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Not Recommended零件包装代码：SOIC
包装说明：HLSOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：7.9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：42 V最小输入电压：4.5 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e4长度：4.9 mm
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：6.8 A
最大输出电压：41.1 V最小输出电压：0.8 V
封装主体材料：PLASTIC/EPOXY封装代码：HLSOP
封装等效代码：SOP8,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.7 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：2500 kHz
温度等级：AUTOMOTIVE端子面层：Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag)
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：NOT SPECIFIED
宽度：3.9 mmBase Number Matches：1

TPS54340DDA 数据手册

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TPS54340  
www.ti.com  
SLVSBK0A –OCTOBER 2012–REVISED FEBRUARY 2013  
42 V Input, 3.5 A, Step Down DC-DC Converter with Eco-mode™  
Check for Samples: TPS54340  
1
FEATURES  
2
•
4.5 V to 42 V (45 V Abs Max) Input Range  
•
•
•
•
Adjustable UVLO Voltage and Hysteresis  
•
3.5 A Continuous Current, 4.5 A Minimum Peak  
Inductor Current Limit  
Internal Soft-Start  
Accurate Cycle-by-Cycle Current Limit  
•
•
•
Current Mode Control DC-DC Converter  
Thermal, Overvoltage, and Frequency  
Foldback Protection  
92-mΩ High-Side MOSFET  
High Efficiency at Light Loads with Pulse  
Skipping Eco-mode™  
•
•
•
•
0.8 V 1% Internal Voltage Reference  
8-Pin HSOIC with PowerPAD™ Package  
–40°C to 150°C TJ Operating Range  
Supported by WEBENCH™ Software Tool  
•
Low Dropout at Light Loads with Integrated  
BOOT Recharge FET  
•
•
•
•
146 μA Operating Quiescent Current  
1 μA Shutdown Current  
APPLICATIONS  
100 kHz to 2.5 MHz Fixed Switching Frequency  
Synchronizes to External Clock  
•
12 V, 24 V and 48 V Industrial, Automotive and  
Communications Power Systems  
DESCRIPTION  
The TPS54340 is a 42 V, 3.5 A, step down regulator with an integrated high side MOSFET. The device survives  
load dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and  
flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 μA.  
Shutdown supply current is reduced to 1 μA when the enable pin is pulled low.  
Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start  
up ramp is internally controlled to provide a controlled start up and eliminate overshoot.  
A wide switching frequency range allows either efficiency or external component size to be optimized. Frequency  
foldback and thermal shutdown protects internal and external components during an overload condition.  
The TPS54340 is available in an 8-pin thermally enhanced HSOIC PowerPAD™ package.  
SIMPLIFIED SCHEMATIC  
EFFICIENCY vs LOAD CURRENT  
100  
90  
V
VIN  
IN  
80  
70  
60  
50  
40  
30  
20  
10  
0
TPS54340  
EN  
BOOT  
V
= 12V  
IN  
V
OUT  
fsw = 600 kHz  
SW  
RT/CLK  
COMP  
R1  
V
V
= 3.3V  
= 5V  
OUT  
OUT  
FB  
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
3.5  
R3  
I
- Output Current - A  
GND  
O
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.  
2
Eco-mode, PowerPAD, WEBENCH are trademarks of Texas Instruments.  
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 © 2012–2013, Texas Instruments Incorporated  
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TPS54340DDA 替代型号

型号 品牌 替代类型 描述 数据表
TPS54340DDAR TI

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 42 V Input, 3.5 A, Step Down DC-DC Converter with Eco-mode

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