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TPS54377RHF PDF预览

TPS54377RHF

更新时间： 2024-09-19 04:27:31
品牌 Logo 应用领域
德州仪器 - TI 转换器稳压器开关式稳压器或控制器电源电路开关式控制器输入元件
页数 文件大小 规格书
21页 691K
描述
1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT⑩ CONVERTER WITH DISABLED SINKING DURING START-UP

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TPS54377RHF 技术参数

生命周期：Obsolete零件包装代码：QFN
包装说明：4 X 5 MM, PLASTIC, QFN-24针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.84
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制技术：PULSE WIDTH MODULATION最大输入电压：6 V
最小输入电压：3 V标称输入电压：5.5 V
JESD-30 代码：S-PQCC-N24长度：5 mm
功能数量：1端子数量：24
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：7.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE认证状态：Not Qualified
座面最大高度：1 mm表面贴装：YES
切换器配置：BUCK最大切换频率：1600 kHz
温度等级：AUTOMOTIVE端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
宽度：5 mmBase Number Matches：1

TPS54377RHF 数据手册

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TPS54377  
www.ti.com  
SLVS779–SEPTEMBER 2007  
1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT™ CONVERTER  
WITH DISABLED SINKING DURING START-UP  
1
FEATURES  
DESCRIPTION  
2
•
60-mΩ MOSFET Switches for High Efficiency  
at 3-A Continuous Output Current  
As a member of the SWIFT™ family of dc/dc  
regulators, the TPS54377 low-input-voltage  
high-output-current synchronous-buck PWM  
•
•
Adjustable Output Voltage Down to 0.9 V With  
1% Accuracy  
converter integrates all required active components.  
Included on the substrate with the listed features are  
a true, high performance, voltage error amplifier that  
provides high performance under transient conditions;  
an undervoltage-lockout circuit to prevent start-up  
until the input voltage reaches 3 V; an internally and  
externally set slow-start circuit to limit in-rush  
Switching Frequency: Adjustable From  
280 kHz to 1600 kHz  
•
•
•
Disabled Current Sinking During Start-Up  
Fast Transient Response  
Load Protected by Peak Current Limit and  
Thermal Shutdown  
currents; and  
a power good output useful for  
•
Integrated Solution Reduces Board Area and  
Total Cost  
processor/logic reset, fault signaling, and supply  
sequencing.  
•
•
Spacing Saving 4mm x 5mm QFN Packaging  
For reliable power up in output precharge  
applications, the TPS54377 is designed to only  
source current during start-up.  
For SWIFT Documentation, Application Notes,  
and Design Software, see the TI website at  
www.ti.com/swift  
The TPS54377 device is available in a thermally  
enhanced 24-pin QFN (RHF) PowerPAD™ package,  
which eliminates bulky heatsinks. TI provides  
evaluation modules and the SWIFT designer software  
tool to aid in achieving high-performance power  
supply designs to meet aggressive equipment  
development cycles.  
APPLICATIONS  
•
Low-Voltage, High-Density Systems With  
Power Distributed at 5 V or 3.3 V  
Point of Load Regulation for High  
Performance DSPs, FPGAs, ASICs, and  
Microprocessors  
•
•
Broadband, Networking and Optical  
Communications Infrastructure  
START-UP WAVEFORM  
Simplified Schematic  
*
*
R
L
= 1 Ω  
Input  
Output  
TPS54377  
VIN  
PH  
PWRGD  
SS/ENA  
SYNC  
RT  
BOOT  
PGND  
V = 3.3 V  
I
VSENSE  
VBIAS  
AGND COMP  
V
= 1.8 V  
O
5.0 ms/div  
* Optional  
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
SWIFT, PowerPAD 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 © 2007, Texas Instruments Incorporated  
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