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TNY266P

更新时间： 2024-01-02 22:43:43
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT 开关
页数 文件大小 规格书
20页 516K
描述
Enhanced, Energy Efficient, Low Power Off-line Switcher

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TNY266P 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：0.300 INCH, LEAD FREE, PLASTIC, MS-001-AB, DIP-8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：7.07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 MODULATIONJESD-30 代码：R-PDIP-T7
JESD-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：0.56 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 (Sn)
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 mmBase Number Matches：1

TNY266P 数据手册

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TNY264/266-268  
C8 680 pF  
Y1 Safety  
Shield  
T1  
L2  
D5  
3.3  
1N5819  
µH  
1
4
8
5
+ 5 V  
C6  
100 µF  
35 V  
500 mA  
C3  
2.2 nF  
C5  
330 µF  
16 V  
R2  
200 kΩ  
RTN  
D1  
1N4005  
D2  
1N4005  
R8  
270 Ω  
D6  
1N4937  
U2  
LTV817  
R7  
100 Ω  
C1  
3.3 µF  
400 V  
C2  
3.3 µF  
400 V  
85-265  
VAC  
RF1  
8.2 Ω  
D
S
EN/UV  
BP  
U1  
TNY264  
TinySwitch-II  
R9  
47 Ω  
Q1  
2N3904  
R3  
22 Ω  
Fusible  
R1  
1.2 kΩ  
VR1  
BZX79-  
B3V9  
C3  
D3  
1N4005  
D4  
1N4005  
0.1 µF  
C7  
10 µF  
10 V  
3.9 V  
L1  
2.2 mH  
R4  
R6  
1.2 Ω 1 Ω  
1/2 W 1/2 W  
PI-2706-052301  
Figure 14. 2.5 W Constant Voltage, Constant Current Battery Charger with Universal Input (85-265 VAC).  
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 two  
main benefits. First, for a nominal application, this eliminates  
the cost of a bias winding and associated components.  
Secondly, for battery charger applications, the current-voltage  
characteristic often allows the output voltage to fall close to  
zero volts while still delivering power. This type of application  
normally requires a forward-bias winding which has many  
more associated components. With TinySwitch-II, neither are  
necessary. For applications that require a very low no-load  
power consumption (50 mW), a resistor from a bias winding to  
the BYPASS pin can provide the power to the chip. The  
minimum recommended current supplied is 750 µA. The  
BYPASS pin in this case will be clamped at 6.3 V. This method  
will eliminate the power draw from the DRAIN pin, thereby  
reducing the no-load power consumption and improving full-  
load efficiency.  
Application Examples  
The TinySwitch-II is ideal for low cost, high efficiency power  
supplies in a wide range of applications such as cellular phone  
chargers, PC standby, TV standby, AC adapters, motor control,  
appliancecontrolandISDNoraDSLnetworktermination. The  
132 kHz operation allows the use of a low cost EE13 or EF12.6  
core transformer while still providing good efficiency. The  
frequency jitter in TinySwitch-II makes it possible to use a  
singleinductor(ortwosmallresistorsforunder3Wapplications  
if lower efficiency is acceptable) in conjunction with two input  
capacitors for input EMI filtering. The auto-restart function  
removes the need to oversize the output diode for short circuit  
conditions allowing the design to be optimized for low cost and  
maximum efficiency. In charger applications, it eliminates the  
need for a second optocoupler and Zener diode for open loop  
faultprotection.Auto-restartalsosavesthecostofaddingafuse  
or increasing the power rating of the current sense resistors to  
survive reverse battery conditions. For applications requiring  
under-voltage lock out (UVLO), such as PC standby, the  
TinySwitch-II eliminates several components and saves cost.  
TinySwitch-II is well suited for applications that require  
constant voltage and constant current output. As TinySwitch-II  
is always powered from the input high voltage, it therefore  
doesnotrelyonbiaswindingvoltage.Consequentlythisgreatly  
simplifiesdesigningchargersthatmustworkdowntozerovolts  
on the output.  
Current Limit Operation  
Each switching cycle is terminated when the DRAIN current  
reaches the current limit of the TinySwitch-II. Current limit  
operation provides good line ripple rejection and relatively  
constant power delivery independent of input voltage.  
BYPASS Pin Capacitor  
The BYPASS pin uses a small 0.1 µF ceramic capacitor for  
decoupling the internal power supply of the TinySwitch-II.  
B
7/01  
7
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