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TPS54427 PDF预览

TPS54427

更新时间: 2024-02-17 21:22:09
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
21页 964K
描述
4.5V to 18 V Input, 4-A Output Single Synchronous Step-Down Switcher with Integrated FET (SWIFT™)

TPS54427 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:8 weeks
风险等级:1.67其他特性:ALSO OPERATES IN OUTPUT VOLTAGE RANGE OF 0.76 TO 7V
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:18 V
最小输入电压:4.5 V标称输入电压:12 V
JESD-30 代码:R-PDSO-G8JESD-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:85 °C最低工作温度:-40 °C
最大输出电流:6.8 A最大输出电压:7 V
最小输出电压:0.76 V标称输出电压:5.5 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最大供电电流 (Isup):1.4 mA
标称供电电压 (Vsup):12 V表面贴装:YES
切换器配置:BUCK最大切换频率:650 kHz
温度等级:INDUSTRIAL端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
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

TPS54427 数据手册

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TPS54427  
www.ti.com  
SLVSB43 NOVEMBER 2011  
4.5V to 18 V Input, 4-A Output Single Synchronous Step-Down Switcher with Integrated  
FET (SWIFT)  
Check for Samples: TPS54427  
1
FEATURES  
DESCRIPTION  
The TPS54427 is an adaptive on-time D-CAP2  
mode synchronous buck converter. The TPS54427  
enables system designers to complete the suite of  
various end equipments power bus regulators with a  
cost effective, low component count, low standby  
current solution.  
23  
D-CAP2Mode Enables Fast Transient  
Response  
Low Output Ripple and Allows Ceramic Output  
Capacitor  
Wide VIN Input Voltage Range: 4.5 V to 18 V  
Output Voltage Range: 0.76 V to 7.0 V  
The main control loop for the TPS54427 uses the  
D-CAP2mode control which provides  
a fast  
Highly Efficient Integrated FETs Optimized  
for Lower Duty Cycle Applications  
70 m(High Side) and 53 m(Low Side)  
transient response with no external compensation  
components.  
The TPS54427 also has a proprietary circuit that  
enables the device to adopt to both low equivalent  
series resistance (ESR) output capacitors, such as  
POSCAP or SP-CAP, and ultra-low ESR ceramic  
capacitors.  
High Efficiency, Less Than 10 μA at Shutdown  
High Initial Bandgap Reference Accuracy  
Adjustable Soft Start  
Pre-Biased Soft Start  
650-kHz Switching Frequency (fSW  
)
The device operates from 4.5-V to 18-V VIN input.  
The output voltage can be programmed between  
0.76 V and 7 V.  
Cycle By Cycle Over Current Limit  
APPLICATIONS  
The device also features an adjustable soft start time.  
Wide Range of Applications for Low Voltage  
System  
The TPS54427 is available in the 8-pin DDA  
package, and designed to operate from 40°C to  
85°C.  
Digital TV Power Supply  
High Definition Blu-ray DiscPlayers  
Networking Home Terminal  
Digital Set Top Box (STB)  
Vout(50mV/div)  
TPA54427DDA  
Iout(2A/div)  
100us/div  
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
3
D-CAP2 is a trademark of Texas Instruments.  
Blu-ray Disc is a trademark of Blu-ray Disc Association.  
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 © 2011, Texas Instruments Incorporated  

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