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TB62732FU Fiches technique(PDF) 2 Page - Toshiba Semiconductor

No de pièce TB62732FU
Description  The step up type DC-DC converter only for white LED driver lighting
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Fabricant  TOSHIBA [Toshiba Semiconductor]
Site Internet  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TB62732FU Fiches technique(HTML) 2 Page - Toshiba Semiconductor

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TOSHIBA
T B 6 2 7 3 2 F U
27, Feb 2002 (Ver.04)
BLOCK DIAGRAM
No
Name
Function explanation
1
K
It is the connection terminal with cathode and IF setup resistance of
LED. It is the feedback terminal of the charge voltage wave form for the
LED current control.
2, 5
GND
It is the ground terminal of the logic part.
3
SHDN
It is the enable terminal. It becomes the standby mode with "L", and the
LED is turned off. The lighting operation is given with "H".
4
Vcc
It is the input terminal of the operation voltage for the IC. The operating
voltage is 3.0 to 5.5V.
6
A
It is the switch terminal of the coil for the DC/DC converter. The switch is
a Nch MOSFET transistor. This is low Ron.
2
FIg 1 : BLOCK DIAGRAM
TERMINAL EXPLANATION
Note 2 : Connect all the GND terminals to the ground electric potencial.
K
0 - 0.12V
OSC
R
S
Q
STB
A
i(sub)
i(add)
1.0MHz
Vcc
GND
SHDN
A
0.35
GND
REF
Buffer


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