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FAN5340UCX Fiches technique(PDF) 3 Page - Fairchild Semiconductor

No de pièce FAN5340UCX
Description  Synchronous Constant-Current Series Boost LED Driver with PWM Brightness Control and Integrated Load Disconnect
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN5340UCX Fiches technique(HTML) 3 Page - Fairchild Semiconductor

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© 2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN5340 • Rev. 1.0.1
3
Pin Configuration
C1
B1
A1
A2
C3
B3
A3
C2
GND
EN
VLED
FB
VIN
VOUT
SW
PGND
Figure 3.
WLCSP Package, Top View
C1
B1
A1
C3
B3
A3
A2
C2
Figure 4.
WLCSP Package, Bottom View
P1
GND
4
3
2
1
5
6
7
8
VIN
VOUT
SW
PGND
GND
EN
VLED
FB
Figure 5.
8-Pin 3 x 3mm MLP, Top View
Pin Definitions
Pin #
Name
Description
CSP
MLP
A1
1
GND
Analog Ground
. All signals are referenced to this pin.
A2
2
EN
Enable / PWM Brightness Control
. A logic LOW on this pin shuts down the IC,
disconnects the LEDs from VOUT, and reduces the current consumption of the IC. This
terminal has an internal pull-down resistor of 300kΩ.
A3
3
VLED
LED String Output
. Connected to the anode of a series string of two to four LEDs.
B3
4
FB
Current Feedback
. The boost regulator regulates this pin to 0.5V to control the LED string
current. Tie this pin via a current-setting resistor (RSET) to GND and the cathode of the LED
string.
C3
5
PGND
Power Ground
. The boost switch and gate drivers are grounded at this pin.
C2
6
SW
Switching Node
. Tie inductor L1 from VIN to this pin.
C1
7
VOUT
Boost Output Voltage
. Output of the boost regulator.
B1
8
VIN
Input Voltage
.


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