General Description
The RT8300 is a 4-CH 150mA constant current sink LED
driver capable of driving four channel constant currents
with good matching ability and wide range VF variations.
The RT8300 provides four channel constant currents with
less than 3% differences in output current value among
the 4-CH and ICs respectively. The constant current output
is adjustable from 5mA to 150mA via an external resistor
(RISET). The LED brightness can also be adjusted via the
PWMI pin with pulse width modulation from 0% to 100%.
Thus allowing for wide VF variation. Moreover, the RT8300
provides Dynamic Headroom Control (DHC) function which
can generate feedback signal to DC/DC control loop and
regulate the output voltage of the RT8300.
The RT8300 features LED open/short protection. If any
channel has open or short condition, that particular output
channel will be turned off and the FAULT pin will pull low.
The RT8300 also supports Over Temperature Protection
(OTP). When OTP is triggered, all output channels will be
turned off and the FAULT pin will pull low.
The RT8300 is available in DIP-16 (BW) and SOP-16
packages to achieve optimized solution for PCB space.

Features
z 4 Constant Current Output Channels
z Wide Power Supply Voltage Range : 5V to 24V
z Maximum Constant Current Output Voltage : 60V
z Low Dropout Voltage : 600mV at 120mA Output
Current
z Constant Output Current Accuracy Between
Channels : <±3%
z Dynamic Headroom Control (DHC) Function
z Constant Output Current Range : 5mA to 150mA
z Support 400ns Narrow PWM Pulse
z Fault Detection for OTP, LED Open/Short
z RoHS Compliant and Halogen Free

Applications
z LED Backlight