Datasheet Linear Technology LT3745-1 — Datenblatt

LT3745-1
16-Channel 50mA LED
Driver with Buck Controller
DESCRIPTION FEATURES
6V to 55V Power Input Voltage Range
16 Independent LED Outputs Up to 75mA/36V
±4% LED Current Matching at 50mA (Typ ±1%)
6-Bit Dot Correction Current Adjustment
12-Bit Grayscale PWM Dimming
0.5µs Minimum LED On-Time
Adaptive LED Bus Voltage for High Efficiency
Cascadable 30MHz LVDS Serial Data Interface
Full Diagnostic and Protection: Individual Open/Short
LED and Overtemperature Fault
n 40-Lead 6mm × 6mm QFN Package n n n n n n n n The LT®3745-1 integrates a 16-channel LED driver with a
55V buck controller. The LED driver lights up to 75mA/36V
of LEDs in series per channel, and the buck controller generates an adaptive bus voltage supplying the parallel LED
strings. Each channel has individual 6-bit dot correction
current adjustment and 12-bit grayscale PWM dimming.
Both dot correction and grayscale are accessible via a serial
data interface in LVDS logic. A ±4% LED current matching and a 0.5µs minimum LED on-time can be achieved
at 50mA per channel. n The LT3745-1 performs full diagnostic and protection
against open/short LED and overtemperature fault. The …