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TNY265

更新时间： 2024-02-26 07:48:45
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT /
页数 文件大小 规格书
22页 765K
描述
Enhanced, Energy Effi cient, Low Power Off-line Switcher

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TNY265 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：DIP
包装说明：DIP,针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：14 weeks
风险等级：7.65Is Samacsys：N
其他特性：REQUIRES AN AC SUPPLY OF 85 TO 265 V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
JESD-30 代码：R-PDIP-T7JESD-609代码：e3
长度：9.575 mm功能数量：1
端子数量：7最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：0.44 A
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
表面贴装：NO切换器配置：SINGLE
最大切换频率：140 kHz温度等级：AUTOMOTIVE
端子面层：MATTE TIN端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm
Base Number Matches：1

TNY265 数据手册

 浏览型号TNY265的Datasheet PDF文件第2页浏览型号TNY265的Datasheet PDF文件第3页浏览型号TNY265的Datasheet PDF文件第4页浏览型号TNY265的Datasheet PDF文件第6页浏览型号TNY265的Datasheet PDF文件第7页浏览型号TNY265的Datasheet PDF文件第8页 
TNY263-268  
the appropriate current limit. At high loads, when the EN/UV  
pin is high (less than 240 μA out of the pin), a switching cycle  
with the full current limit occurs. At lighter loads, when EN/UV  
is high, a switching cycle with a reduced current limit occurs.  
reduced even further (Figure 9). Only a small percentage of  
cycles will occur to satisfy the power consumption of the  
power supply.  
The response time of the TinySwitch-II ON/OFF control  
scheme is very fast compared to normal PWM control. This  
provides tight regulation and excellent transient response.  
At near maximum load, TinySwitch-II will conduct during  
nearly all of its clock cycles (Figure 6). At slightly lower load, it  
will “skip” additional cycles in order to maintain voltage  
regulation at the power supply output (Figure 7). At medium  
loads, cycles will be skipped and the current limit will be  
reduced (Figure 8). At very light loads, the current limit will be  
Power Up/Down  
The TinySwitch-II requires only a 0.1 μF capacitor on the  
BYPASS pin. Because of its small size, the time to charge this  
capacitor is kept to an absolute minimum, typically 0.6 ms.  
Due to the fast nature of the ON/OFF feedback, there is no  
overshoot at the power supply output. When an external  
resistor (2 MΩ) is connected from the positive DC input to the  
EN/UV pin, the power MOSFET switching will be delayed  
during power-up until the DC line voltage exceeds the  
threshold (100 V). Figures 10 and 11 show the power-up timing  
waveform of TinySwitch-II in applications with and without an  
external resistor (2 MΩ) connected to the EN/UV pin.  
V
EN  
CLOCK  
D
MAX  
During power-down, when an external resistor is used, the  
power MOSFET will switch for 50 ms after the output loses  
regulation. The power MOSFET will then remain off without  
any glitches since the undervoltage function prohibits restart  
when the line voltage is low.  
I
DRAIN  
Figure 12 illustrates a typical power-down timing waveform of  
TinySwitch-II. Figure 13 illustrates a very slow power-down  
timing waveform of TinySwitch-II as in standby applications.  
The external resistor (2 MΩ) is connected to the EN/UV pin in  
this case to prevent unwanted restarts.  
V
DRAIN  
The TinySwitch-II does not require a bias winding to provide  
power to the chip, because it draws the power directly from  
the DRAIN pin (see Functional Description above). This has  
PI-2749-050301  
Figure 6. TinySwitch-II Operation at Near Maximum Loading.  
V
V
EN  
EN  
CLOCK  
CLOCK  
D
D
MAX  
MAX  
I
I
DRAIN  
DRAIN  
V
DRAIN  
V
DRAIN  
PI-2667-090700  
PI-2377-091100  
Figure 7. TinySwitch-II Operation at Moderately Heavy Loading.  
Figure 8. TinySwitch-II Operation at Medium Loading.  
5
www.powerint.com  
Rev. H 02/09  
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