BD18377EFV-ME2

ROHM  BD18377EFV-ME2  发光二极管驱动器, 12输出, 恒流, 3V-5.5V输入, 1.25MHz开关, 10V/50mA输出, HTSSOP-20

The is a serial input controlled constant-current LED Driver with 10V output rating. 6-bit current calibration is available for each output while a global PWM performs dimming on all outputs simultaneously. It is able to perform diagnostic open/short load/temperature checks to detect LED failure and over-temperature on chip. The settings of all internal registers can be read out to verify written information at any time.

.

4-line Serial control + enable signal

.

PWM dimming 0.1 to 100% global

.

6-bit LED brightness adjustment on each channel

.

Diagnostic output on LED open and short for each channel

.

Over-temperature protection and thermal feedback

.

Read-back of all register settings

.

Outputs may be connected in parallel to achieve more than 50mA into the load

.

Slew limited switching reduces conducted and radiated noise EMI

.

3.5% Typical output current accuracy at 30mA

.

5µs Minimum PWM on time

.

5mA Maximum circuit current