8-Channel × 100mA
n Up to 45V of LEDs × 100mA, 8-Channel LED Driver
n Wide Input Range : 6V to 40V
n ±2% LED Current Matching at 40mA (Typ ±0.7%)
n Up to 3000:1 True Color PWM™ Dimming Range
n Single Resistor Sets LED Current (20mA to 100mA)
n LED Current Regulated Even for PVIN > VOUT
n Output Adapts to LED VF for Optimum Efficiency
n Fault Flag + Protection for Open LED Strings
n Protection for LED Pin to VOUT Short
n Parallel Channels for Higher LED Current
n Programmable LED Current Derating vs Temperature
n Accurate Undervoltage Lockout Threshold with
n Programmable Frequency (100kHz to 1MHz)
n Synchronizable to an External Clock
n Automotive, Notebook and TV Monitor Backlighting
L, LT, LTC and LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. True Color PWM is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 7199560, 7321203.
The LT®3760 is an 8-channel LED driver with a step-up
DC/DC controller capable of driving up to 45V of LEDs.
Each channel contains an accurate current sink with ±2%
current matching. Channels follow a master programmable
current to allow between 20mA to 100mA of LED current
per string. Channels can be paralleled for higher LED
current. Output voltage adapts to variations in LED VF for
optimum efficiency and open LED faults do not affect the
operation of connected LED strings.
The LT3760 allows a PWM dimming range up to 3000:1 and
an analog dimming range up to 25:1. Operating frequency
can be programmed from 100kHz up to 1MHz using a
single resistor or synchronized to an external clock.
Additional features include: programmable maximum VOUT
for open LED protection, a fault flag for open LED, program-
mable LED current derating vs temperature, micropower
shutdown and internal soft-start. The LT3760 is available
in a thermally enhanced 28-pin TSSOP Package.
20V TO 36V
8V TO 14V
92% Efficient, 36W Backlight LED Driver
UP TO 45V OF LEDs PER STRING
•••• 8 CHANNELS s 100mA
Worst-Case Channels LED Current Matching
(Normalized to 8-Channel Average)
RISET = 14.7k (I(LED) = 40mA)
–50 –25 0 25 50 75
JUNCTION TEMERATURE (°C)