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TPS61085PWRG4 PDF预览

TPS61085PWRG4

更新时间: 2024-02-04 08:39:00
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光电二极管DC-DC转换器
页数 文件大小 规格书
23页 732K
描述
650 kHz/1.2 MHz, 18.5 V STEP-UP DC-DC CONVERTER

TPS61085PWRG4 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SOIC包装说明:TSSOP, TSSOP8,.25
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15Is Samacsys:N
其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 2.8V TO 18.5V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:6 V最小输入电压:2.3 V
标称输入电压:3.3 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e4长度:4.4 mm
湿度敏感等级:1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:2 A
最大输出电压:18.5 V最小输出电压:2.8 V
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.2 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BOOST最大切换频率:1500 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:0.65 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 mmBase Number Matches:1

TPS61085PWRG4 数据手册

 浏览型号TPS61085PWRG4的Datasheet PDF文件第5页浏览型号TPS61085PWRG4的Datasheet PDF文件第6页浏览型号TPS61085PWRG4的Datasheet PDF文件第7页浏览型号TPS61085PWRG4的Datasheet PDF文件第9页浏览型号TPS61085PWRG4的Datasheet PDF文件第10页浏览型号TPS61085PWRG4的Datasheet PDF文件第11页 
TPS61085  
SLVS859JUNE 2008 ...................................................................................................................................................................................................... www.ti.com  
DETAILED DESCRIPTION  
V
V
IN  
S
SW  
IN  
EN  
FREQ  
SS  
Current limit  
and  
Soft Start  
Toff Generator  
Bias Vref = 1.24V  
UVLO  
Thermal Shutdown  
Ton  
Gate Driver of  
Power  
PWM  
Generator  
Transistor  
COMP  
GM Amplifier  
FB  
Vref  
PGND  
Figure 11. Block Diagram  
The boost converter is designed for output voltages up to 18.5 V with a switch peak current limit of 2.0 A  
minimum. The device, which operates in a current mode scheme with quasi-constant frequency, is externally  
compensated for maximum flexibility and stability. The switching frequency is selectable between 650 kHz and  
1.2 MHz and the minimum input voltage is 2.3 V. To control the inrush current at start-up a soft-start pin is  
available.  
During the on-time, the voltage across the inductor causes the current in it to rise. When the current reaches a  
threshold value set by the internal GM amplifier, the power transistor is turned off, the energy stored into the  
inductor is then released and the current flows through the Schottky diode towards the output of the boost  
converter. The off-time is fixed for a certain VIN and VS, and therefore maintains the same frequency when  
varying these parameters.  
However, for different output loads, the frequency may slightly change due to the voltage drop across the Rdson  
of the power transistor which will have an effect on the voltage across the inductor and thus on tON (tOFF remains  
fixed). Some slight frequency changes might also appear with a fixed output load due to the fact that the output  
voltage VS is not sensed directly but via the SW Pin, which affects accuracy.  
Because of the quasi-constant frequency behavior of the device, the TPS61085 eliminates the need for an  
internal oscillator and slope compensation, which provides better stability for the system over a wide of input and  
output voltages range, and more stable and accurate current limiting operation compared to boost converters  
operating with a conventional PWM scheme. The TPS61085 topology has also the benefits of providing very  
good load and line regulations, and excellent load transient response.  
8
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Copyright © 2008, Texas Instruments Incorporated  
Product Folder Link(s): TPS61085  

TPS61085PWRG4 替代型号

型号 品牌 替代类型 描述 数据表
TPS61085PWG4 TI

完全替代

650 kHz/1.2 MHz, 18.5 V STEP-UP DC-DC CONVERTER
TPS61085PWR TI

类似代替

650 kHz/1.2 MHz, 18.5 V STEP-UP DC-DC CONVERTER
TPS61085PW TI

类似代替

650 kHz/1.2 MHz, 18.5 V STEP-UP DC-DC CONVERTER

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