RT9301_11 Datasheet, PDF (1/10 Pages) Richtek Technology Corporation – 3-Channel Low Dropout RGB LED Driver

RT9301
3-Channel Low Dropout RGB LED Driver
General Description
The RT9301 is a 3-Channel current source driver for RGB
LED. It is easy to be designed in applications that need
mixing RGB light source for multi-color output.
The RT9301 also provide users with great flexibility and
device performance. It uses externals resistor to set the
bias current for three LEDs, which are matched to
5%(max.). Users can adjust the output current from 2mA
to 50mA by setting the ISET resistor.
The RT9301 features very low dropout and under voltage
lockout protection. It is available in a space-saving
TSOT-23-8 and WDFN-8L 3x3 packages.
Ordering Information
RT9301
Package Type
J8 : TSOT-23-8
QW : WDFN-8L 3x3 (Green Only)
Note :
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
z WDFN-8L 3x3 is in W-Type
z Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Features
z Input Voltage Range : 2.8V to 5.5V
z Low 60/45mV Dropout at 20/15mA
z Individual Current Setting by External Resistor
z Individual On/Off Control by Baseband MPU
z Up to 50mA LED Bias Current
z Simple LED Brightness Control
z 5%(max.) LED Current Matching
z Low 0.1uA Shutdown Current
z UVLO Protection
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Mobile phone, Smart Phone Multi-color LED Backlight
z Camera Flash White LED
z LCDDisplay Modules
z Keypad Backlight
Pin Configurations
(TOP VIEW)
87 6 5
2 34
TSOT-23-8
LED2 1
LED1 2
ISET1 3
ISET2 4
GND
9
8 LED3
7 GND
6 VIN
5 ISET3
WDFN-8L 3x3
DS9301-05 April 2011
www.richtek.com
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