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PDF FT886C-GB Data sheet ( Hoja de datos )

Número de pieza FT886C-GB
Descripción High Performance Non-isolated Buck LED Driver
Fabricantes Fremont Micro Devices 
Logotipo Fremont Micro Devices Logotipo



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Fremont Micro Devices
Preliminary FT886xx
High Performance Non-isolated Buck LED Driver
FEATURES
No Auxiliary winding for sensing and
supplying
Inductor current boundary conduction mode
BCM
Constant current control without secondary
sense and feedback circuit
Built-in 500V Power MOSFET
±3% LED current accuracy
Ultra low operating current to improve
efficiency
Built-in line compensation
Cycle-by-Cycle current limiting
Precision OVP voltage for best LED open
circuit protection
LED short circuit protection
Over temperature compensation
CS resistor short circuit protection.
Inductor short circuit protection.
VCC under-voltage lockout
Available in SOP8 and DIP8 packages
APPLICATIONS
DC/DC or AC/DC LED Driver Applications
Back Lighting of Flat Panel Displays
DESCRIPTION
FT886x is optimized for low cost non-isolated Buck
switching mode LED driver applications. It operates
in inductor current boundary conduction mode. With
source driving architecture, special demagnetization
sensing technology and the ultra low operating
current, FT886xx doesn’t need the auxiliary winding
for output current sensing and chip power supplying.
FT886x also integrates a 500V power MOSFET that
further improves the system reliability and lowers
the system cost and complexity.
Its highly integrated functions such as Leading Edge
Blanking (LEB) and built-in line compensation offer
users a high efficiency and low cost solution for
constant current LED driver applications.
Furthermore, FT886x offers fruitful protections like
LED open and short circuit protection, over
temperature compensation, CS resistor and
inductor short circuit protection.
The industry leading OVP voltage accuracy ensures
the best LED open circuit protection
© 2013 Fremont Micro Devices Inc.
Confidential Rev0.8
DS886xx-A0-page1

1 page




FT886C-GB pdf
Fremont Micro Devices
MARKING RULE
Preliminary FT886xx
Figure 3 marking rule
①②③④⑤⑥ for internal reference
BLOCK DIAGRAM
VCC 3
15V +
-
12.8V/ 9V
UVLO
VOLTAGE
REGULATOR
DRAIN
5,6
Internal reference
& bias
OVP
VCC
OCP
OTP
Constant Current
& Logic Control
4 TP
GND 1
LEB
Current Sense
+
-
0.5V
7,8 CS
Figure 4 Block Diagram
© 2013 Fremont Micro Devices Inc.
Confidential Rev0.8
DS886x-A0-page5

5 Page





FT886C-GB arduino
Fremont Micro Devices
DIP8 PACKAGE OUTLINE DIMENSIONS
Preliminary FT886xx
Symbol
A
A1
A2
B
B1
C
D
E
E1
e
L
E2
Dimensions In Millimeters
Min Max
3.710
4.310
0.510
3.200
3.600
0.380
0.570
1.524BSC
0.204
0.360
9.000
9.400
6.200
6.600
7.320
7.920
2.540 (BSC)
3.000
3.600
8.400
9.000
Dimensions In Inches
Min Max
0.146
0.170
0.020
0.126
0.142
0.015
0.022
0.060BSC
0.008
0.014
0.354
0.370
0.244
0.260
0.288
0.312
0.100BSC
0.118
0.142
0.331
0.354
© 2013 Fremont Micro Devices Inc.
Confidential Rev0.8
DS886x-A0-page11

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