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TD8208 数据表(PDF) 11 Page - TECHCODE SEMICONDUCTOR, INC.

部件名 TD8208
功能描述  High Efficiency 1MHz, 2A Step Up Regulator
Download  13 Pages
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制造商  TECHCODE [TECHCODE SEMICONDUCTOR, INC.]
网页  http://www.techcodesemi.com/
标志 TECHCODE - TECHCODE SEMICONDUCTOR, INC.

TD8208 数据表(HTML) 11 Page - TECHCODE SEMICONDUCTOR, INC.

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October,  20,  2011.                             Techcode  Semiconductor  Limited                          www.techcodesemi.com 
11 
Techcode®
High Efficiency 1MHz, 2A Step Up Regulator
TD8208
DATASHEET
  
 
The schottky diode reverse breakdown voltage should 
be larger than the output voltage. 
Layout Design: 
The layout design of TD8208 regulator is relatively 
simple. For the best efficiency and minimum noise 
problems, we should place the following components 
close to the IC: CIN, L, Rand R2
1) It is desirable to maximize the PCB copper area 
connecting to GND pin to achieve the best thermal and 
noise performance. If the board space allowed, a 
ground plane is highly desirable. 
2) CIN must be close to Pins IN and GND. The loop 
area formed by CIN and GND must be minimized. 
 
3) The PCB copper area associated with LX pin must 
be minimized to avoid the potential noise problem. 
4) The components Rand R2, and the trace 
connecting to the FB pin must NOT be adjacent to the 
LX net on the PCB layout to avoid the noise problem. 
5) If the system chip interfacing with the EN pin has a 
high impedance state at shutdown mode and the IN pin 
is connected directly to a power source such as a Li‐Ion 
battery, it is desirable to add a pull down 1Mohm 
resistor between the EN and GND pins to prevent the 
noise from falsely turning on the regulator at shutdown 
mode. 
 
 
 
 


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