SP7615EB Exar Corporation, SP7615EB Datasheet
SP7615EB
Specifications of SP7615EB
Related parts for SP7615EB
SP7615EB Summary of contents
Page 1
... R1 1n GND Jul31- GND I SET APPLICATIONS ■ Next Generation Mobile Phones ■ PDA, DSC, MP3 Players ■ Handheld Computers ■ LCD Display Modules ■ Keyboard Backlight ■ LED Displays input or by feeding a PWM signal to I SET TYPICAL APPLICATION SCHEMATIC V LED1 CC ® EN ...
Page 2
Vcc LED1 LED2 LED3 V , Voltage to GND .......................................0.3V to 16V LED4 EN Voltage to GND..................................... 0 to (Vcc + 0.3V) I Voltage to GND...................................0 to (Vcc + 0.3V) SET or 6V, whichever ...
Page 3
V CC Bias GND EN Figure 1: SP7615 Block Diagram Introduction The SP7615 is a four channel constant current source LED driver with programmable output current level. The design consists of a regulator bandgap, voltage-to-current converter, and output mirror drivers. ...
Page 4
GND R2 Current sharing capabilities allow two SP7615s to run in parallel for twice as much current through the LEDs. The voltage applied to the cathode of each LED determines the overall efficiency of ...
Page 5
MOD GND I Pin SET The I pin is the servo point of an amplifier SET configured as a voltage-to-current converter. The voltage at this pin servos to the internal bandgap potential. A set ...
Page 6
Figure 2 – Four Channel Total Power Dissipation versus Cathode Voltage at V Figure 3 – Four Channel Total Power Dissipation versus Supply Voltage at Vcathode = 500mV Jul31-07 TYPICAL PERFORMANCE CHARACTERISTICS SP7615 Four Channel Constant Current LED Driver 6 ...
Page 7
Figure 4 – LED Current versus Figure 5 – LED Current versus R Jul31-07 TYPICAL PERFORMANCE CHARACTERISTICS Current and Cathode Voltage, Vcc=5V SET Value SET SP7615 Four Channel Constant Current LED Driver 7 C ° ° ° ...
Page 8
Figure 6 – LED Current versus Temperature with Thermal Shutdown Figure 7 – I Voltage versus Temperature SET Jul31-07 TYPICAL PERFORMANCE CHARACTERISTICS SP7615 Four Channel Constant Current LED Driver 8 © 2007 Sipex Corporation ...
Page 9
Figure 8 –PWM Signal Applied To The Enable Pin, Amplitude=5V, Duty Cycle=50% 140 120 100 0.2 Figure 9 -- Iout current (mA per channel) vs. V Jul31-07 TYPICAL PERFORMANCE CHARACTERISTICS 0.4 0.6 0.8 Vm ...
Page 10
Jul31-07 SP7615 Four Channel Constant Current LED Driver 10 PACKAGE: 8 PIN DFN © 2007 Sipex Corporation ...
Page 11
TM Jul31-07 SP7615 Four Channel Constant Current LED Driver 11 PACKAGE: 8 PIN HSOICN © 2007 Sipex Corporation ...
Page 12
Part Number RoHS SP7615ER-L Yes SP7615ER-L/TR Yes SP7615EN2-L Yes SP7615EN2-L/TR Yes For further assistance: Email: WWW Support page: Sipex Application Notes: Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability ...