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EUP2571VCIR1 bảng dữ liệu(PDF) 2 Page - Eutech Microelectronics Inc

tên linh kiện EUP2571VCIR1
Giải thích chi tiết về linh kiện  White LED Step-Up Converter In Tiny SOT-23 Package
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nhà sản xuất  EUTECH [Eutech Microelectronics Inc]
Trang chủ  http://www.eutechmicro.com
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EUP2571
DS2571
Ver1.1
May. 2007
2
Typical Application Circuit (continued)
Figure 2.
5V to 9V/300mA Step-Up Application
Pin Configurations
Package Type
Pin
Configurations
Package Type
Pin
Configurations
SOT23-5
SOT23-6
Pin Description
PIN
SOT23-5
SOT23-6
DESCRIPTION
LX
1
1
Switch Pin. Connect inductor/diode here. Minimize trace area at this pin to
reduce EMI.
GND
2
2
Common Ground
FB
3
3
Feedback Pin. Reference voltage is 0.25V. Connect cathode of lowest LED
and resistor here. Calculate resistor value according to the formula:
RFB=0.25/ILED
EN
4
4
Chip Enable Pin. Connect to 1.4V or higher to enable device, 0.4V or less to
disable device.
IN
5
6
Input Supply Voltage
OUT
-
5
Overvoltage Sense. When VOUT is greater than 27V, the internal N-channel
MOSFET turns off until VOUT drops below 25V, then the IC reenters start.
Connect a 1uF capacitor from OUT to GND.



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