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TNY254G

更新时间： 2024-01-24 12:58:33
品牌 Logo 应用领域
帕沃英蒂格盛 - POWERINT 开关光电二极管
页数 文件大小 规格书
20页 498K
描述
TinySwitch Family Energy Efficient, Low Power Off-line Switchers

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TNY254G 技术参数

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, PLASTIC, DIP-8
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：14 weeks风险等级：7.79
模拟集成电路 - 其他类型：SWITCHING REGULATORJESD-30 代码：R-PDIP-T8
JESD-609代码：e3长度：9.59 mm
功能数量：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：0.4 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP8,.3
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
座面最大高度：4.45 mm子类别：Power Management Circuits
最大供电电流 (Isup)：0.2 mA表面贴装：NO
切换器配置：SINGLE最大切换频率：48 kHz
温度等级：AUTOMOTIVE端子面层：PURE 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 mmBase Number Matches：1

TNY254G 数据手册

 浏览型号TNY254G的Datasheet PDF文件第1页浏览型号TNY254G的Datasheet PDF文件第3页浏览型号TNY254G的Datasheet PDF文件第4页浏览型号TNY254G的Datasheet PDF文件第5页浏览型号TNY254G的Datasheet PDF文件第6页浏览型号TNY254G的Datasheet PDF文件第7页 
TNY253/254/255  
REGULATOR  
5.8 V  
BYPASS  
DRAIN  
UNDER-VOLTAGE  
+
+
-
50 µA  
5.8 V  
5.1 V  
-
V
I
LIMIT  
OSCILLATOR  
CLOCK  
DC  
THERMAL  
MAX  
SHUTDOWN  
S
R
Q
Q
LEADING  
EDGE  
BLANKING  
1.5 V + V  
TH  
SOURCE  
ENABLE  
PI-2197-061898  
Figure 2. Functional Block Diagram.  
Pin Functional Description  
DRAIN (D) Pin:  
1
8
7
6
5
BYPASS  
SOURCE  
SOURCE  
SOURCE  
DRAIN  
2
3
4
SOURCE  
SOURCE  
ENABLE  
Power MOSFET drain connection. Provides internal operating  
current for both start-up and steady-state operation.  
BYPASS (BP) Pin:  
P Package (DIP-8)  
G Package (SMD-8)  
Connection point for an external bypass capacitor for the  
internally generated 5.8V supply. Bypass pin is not intended  
for sourcing supply current to external circuitry.  
PI-2199-031501  
Figure 3. Pin Configuration.  
ENABLE (EN) Pin:  
circuit, Hysteretic Over Temperature Protection, Current Limit  
circuit, Leading Edge Blanking, and a 700V power MOSFET.  
Figure 2 shows a functional block diagram with the most  
important features.  
The power MOSFET switching can be terminated by pulling  
this pin low. The I-V characteristic of this pin is equivalent to  
a voltage source of approximately 1.5V with a source current  
clamp of 50 µA.  
Oscillator  
SOURCE (S) Pin:  
The oscillator frequency is internally set at 44 kHz (130 kHz for  
the TNY255). The two signals of interest are the Maximum  
Duty Cycle signal (DMAX) which runs at typically 67% duty  
cycle and the Clock signal that indicates the beginning of each  
cycle. When cycles are skipped (see below), the oscillator  
frequency doubles (except for TNY255 which remains at  
130kHz). This increases the sampling rate at the ENABLE pin  
for faster loop response.  
Power MOSFET source connection. Primary return.  
TinySwitch Functional Description  
TinySwitch is intended for low power off-line applications. It  
combines a high voltage power MOSFET switch with a power  
supply controller in one device. Unlike a conventional PWM  
(Pulse Width Modulator) controller, the TinySwitch uses a  
simple ON/OFF control to regulate the output voltage.  
Enable (Sense and Logic)  
The ENABLE pin circuit has a source follower input stage set  
at 1.5V. The input current is clamped by a current source set  
at 50 µA with 10 µA hysteresis. The output of the enable sense  
The TinySwitch controller consists of an Oscillator, Enable  
(Sense and Logic) circuit, 5.8V Regulator, Under-Voltage  
C
2
7/01  
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