FAN5611 Fairchild Semiconductor, FAN5611 Datasheet
FAN5611
Manufacturer Part Number
FAN5611
Description
Low-Dropout LED Drivers for White/ Blue or any Color LED
Manufacturer
Fairchild Semiconductor
Datasheet
1.FAN5611.pdf
(12 pages)
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FAN5611/FAN5612/FAN5613/FAN5614
Low-Dropout LED Drivers for White, Blue or any
Color LED
Features
• LED Drivers for parallel-connected LEDs
• Ultra-low voltage drop (< 300mV) to support direct
• No EMI, no switching noise
• No external components needed for current matching
• Both analog and PWM brightness control
• FAN5611, FAN5613 feature up to 160mA bias current
• FAN5612 features up to 120mA bias current (up to 40mA
• FAN5614 features up to 160mA bias current (up to 80mA
• Enable/Shutdown control (FAN5612, FAN5613,
• Shutdown current < 1 µ A
• Small footprint SC-70 and 2x2 MLP
Applications
• Cell Phones
• PDA, DSC, MP3 Players
• Handheld Computers
• LCD Display Modules
• Keyboard Backlight
• LED Displays
Typical Applications
V
Li-ion applications
(up to 40mA for each LED)
for each LED)
for each LED)
FAN5614)
CONTROL
(3V
V
)
IN
R
I
SET
SET
CTRL
I4
Four Diode Control
I3
FAN5611
GND
I2
I1
V
CONTROL
V
CONTROL
(3V)
(3V)
ENABLE
V
V
IN
I
R
SET
IN
R
I
SET
SET
SET
Three Diode Control with ON/OFF
Two Diode Control with ON/OFF
CTRL
ON/OFF
ON/OFF
CTRL
I3
I1/I2
General Description
The FAN5611/FAN5612/FAN5613/FAN5614 driver family
provides matched current source bias for white, blue or any
color LEDs. The current in the LEDs can be programmed by
an external resistor. The individual LED currents are 200 x
I
connected to the CTRL pin. The FAN5611 and the FAN5613
are capable of driving four LEDs, while the FAN5612 can
drive three LEDs. The FAN5614 is designated to drive two
high current LEDs. In any case, at least I1 should be always
connected to an LED in order to have the other LEDs driven
with a matched current to I1.
The FAN5612, FAN5613 and FAN5614 have Enable pin.
When these devices are disabled, the supply current drops to
less than 1 µ A.
The FAN5611, FAN5612 and FAN5614 drivers are available
in a 6-lead SC-70 package. The FAN5613 is available in an
8-lead MLP package.
FAN5614
SET
FAN5612
GND
GND
I2
, where I
I3/I4
I1
SET
is the current through the external resistor
V
CONTROL
(3V)
ENABLE
V
IN
www.fairchildsemi.com
R
I
SET
SET
Four Diode Control With ON/OFF
CTRL
I4
ON/OFF
I3
REV. 1.0.4 6/4/04
FAN5613
GND
I2
I1
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