LT3496
Triple Output LED Driver
Features Description True Color PWM™ Dimming Delivers Up to 3000:1
Dimming Ratio
n Built-In Gate Driver for PMOS LED Disconnect
n Three Independent Driver Channels with 750mA,
45V Internal Switches
n Operates in Buck, Boost, Buck-Boost Modes
n CTRL Pin Accurately Sets LED Current Sense
Threshold Over a Range of 10mV to 100mV
n Adjustable Frequency: 330kHz to 2.1MHz
n Open LED Protectio Wide V Supply Range:
IN Operation from 3V to 30V Transient Protection to 40V
n Surface Mount Components
n 28-Lead (4mm × 5mm) QFN and TSSOP Packages The LT®3496 is a triple output DC/DC converter designed
to operate as a constant-current source and is ideal for
driving LEDs. The LT3496 works in buck, boost or buckboost mode. The LT3496 uses a fixed frequency, current
mode architecture resulting in stable operation over a
wide range of supply and output voltages. A frequency
adjust pin allows the user to program switching frequency
between 330kHz and 2.1MHz to optimize efficiency and
external component size. n The LT3496 supports 3000:1 dimming control on each
channel. Each of the three regulators is independently …