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SP7615 Fiches technique(PDF) 1 Page - Sipex Corporation

No de pièce SP7615
Description  Four Channel Constant Current LED Driver
Download  10 Pages
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Fabricant  SIPEX [Sipex Corporation]
Site Internet  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP7615 Fiches technique(HTML) 1 Page - Sipex Corporation

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Date: 08/31/05
SP7615 Four Channel Constant Current LED Driver
© Copyright 2005 Sipex Corporation
SP7615
The SP7615 is a linear constant current driver designed to drive multiple LEDs in series from
a high input voltage rail. The driver acts as a high current matched, four-channel current
source ensuring constant LED current for a range of input voltages. The SP7615 allows
implementing the lowest cost LED driver for a variety of applications. Internal circuitry
maintains the pre-set constant current output for a wide voltage range at the LED outputs
(LED1,2,3,4). LED current can be adjusted up to 125mA per string with an external resistor.
The dimming can be achieved by controlling the ISET input or by feeding a PWM signal to
the EN pin. Fast EN turn-on and turn-off time allows for very fast PWM dimming frequencies,
completely eliminating flicker. The built-in thermal protection automatically adjusts LED
current to prevent overheating.
®
TYPICAL APPLICATION SCHEMATIC
FEATURES
■ Cost Effective LED driver
■ Constant current output ideal for Driving LED strings
■ Four Channel LED Driver provides matched LED
current
■ Current adjusted via an external resistor
■ PWM dimming possible
■ Small 2mm x 3mm DFN package
■ Outputs can be connected in parallel to
increase drive
■ Constant current for wide cathode voltage range
(1.0V to 16V)
■ Highly integrated design, minimal components
■ Thermal shutdown protects the driver
APPLICATIONS
■ Next Generation Mobile Phones
■ PDA, DSC, MP3 Players
■ Handheld Computers
■ LCD Display Modules
■ Keyboard Backlight
■ LED Displays
Four Channel Constant Current LED Driver
Preliminary
Now Available in Lead Free Packaging
DESCRIPTION
SP7615
8 Pin DFN
8
7
6
5
1
2
3
4
LED1
LED2
LED3
LED4
EN
GND
ISET
VCC
VCC
EN
GND
C1
1n
R1
SP7615
®
EN
GND
LED1
VCC
ISET
LED2
LED3
LED4


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