High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement

Page Contents:   [ Featured Products | Datasheets | Application Notes | Buy Now ]

The SP7616 is a 30V 4-channel linear low side LED driver. It is capable of powering up to four LED strings of nine LEDs @ 60mA per string, for a total of 36 LEDs with 1.5% typical current matching between channels.

The desired LED current can be adjusted with an external resistor, and the precision string-to-string current matching ensures consistent color temperature across the whole display. The device also features very low dropout voltage to maximize system efficiency and avoid difficult thermal design constraints. Dimming can be achieved by feeding a PWM signal to the PWM pin, or use an analog signal to control the ISET current, this allows brightness control without unwanted color shifts. Fast LED current turn-on/off time allows up to 5kHz PWM dimming frequencies with as low as 10% duty cycle, completely eliminating flicker. The built-in thermal protection prevents damage to the device under fault conditions.

 

FEATURES AND BENEFITS 30V linear 4-channel low side LED driver Wide Vin range 4.5 to 30V 60mA max current per channel 3% current matching between channels over full temp range, full Vcc 300mV max dropout voltage PWM/Analog dimming control Thermal protection Over current protection DFN package for maximum power dissipation Linear solution, no switching, no ripple, low noise Space saving 2 x 3mm DFN8 package

APPLICATIONS Industrial motor controls Appliance motor controls Dimming lamp ballasts Switched-mode power supplies Soft switching PFC DC-to-DC power supplies

 

 

Top 5 Key Parameters	SP7616	LM3432	MBI1804	AMC7111
VLED max	30V	80V	17V	7V
Vcc	4.5 - 30V	? - 80V	5V	7V
Channel	4	6	4	4
Current Accuracy	+/-3%	+/-2.5%	+/-3%	+/-3%
Max Current/Channel	60mA	40mA	60mA	20mA
Dropout	0.3V@30mA	-	0.6V@25mA	0.9V@20mA
Package	DFN8	LLP24 (5x4)	SOP-8	SOP-8 or SOT23-6

 

 

 

 

 Featured Products

Part Number		Description	Data Sheet	App. Notes
SP7616ER-L		High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement

refers to New Product Introduction