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CL8800 Fiches technique(PDF) 7 Page - Microchip Technology

No de pièce CL8800
Description  Sequential Linear LED Driver
PDF  14 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CL8800 Fiches technique(HTML) 7 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS20005357A-page 7
CL8800
3.6
Power Boost
Higher output power can be achieved by off-loading a
portion of the power dissipation from the CL8800 to
external Field-Effect Transistors (FET). The circuit
below drops most of the tap voltage across the FETs,
thereby shifting the bulk of the dissipation to the FET.
FIGURE 3-4:
POWER BOOST
FIGURE 3-5:
VALLEY FILL CIRCUIT
TAP6
TAP7
to LEDs
to LEDs
200kΩ
15V
BIAS
CL8800
SET1
SET2
SET3
SET4
SET5
SET6
GND
TAP1
TAP2
TAP3
TAP4
TAP5
TAP6
C
F1
Q
F2
DN3135
R
F3
R
F2
150kΩ
R
F1
10kΩ
Q
F1
Optional flicker
reduction circuit
(valley fill)
R
S1
R
S2
R
S3
R
S4
R
S6
R
S5



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