6 Channels 150mA x1/x1.5/x2 Charge Pump White LED Driver
The RT9379 is a 6 channel WLED driver with auto mode
selection of x1, x1.5 and x2 mode with low dropout voltage
in current sources. The RT9379 can power up to 6 white
LEDs with regulated constant current for uniform intensity.
Each channel (LED1 to LED6) can support up to 25mA.
The part maintains highest efficiency by utilizing x1/x1.5/
x2 fractional charge pump and low dropout current
regulators. For the brightness control, user can easily use
a PWM signal generated from GPIO to control the
brightness of WLEDs.
The RT9379 is available in a WQFN-16L 2x3 package.
Small 1μF capacitors can be used for fly capacitors. It
provides the best backlighting solution with high efficiency
and smallest board space for portable application.
QW : WQFN-16L 2x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
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.
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
z 85% Average Efficiency Over Li-ion Battery
z Support Up to 6 White LEDs
z Support Up to 25mA/Per Channel
z PWM Brightness Control
z 60mV Current Source Dropout
z 1% LED Current Accuracy
z 0.7% LED Current Matching
z Automatic x1/x1.5/x2 Charge Pump Mode
z Low Input Noise and EMI
z Over Voltage Protection
z Power On/Mode Transition Inrush Protection
z 1MHz Switching Frequency
z 0.4uA Low Shutdown Current
z RoHS Compliant and Halogen Free
z Camera Phone, Smart Phone
z White LED Backlighting
16 15 14
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS9379-02 January 2014
is a registered trademark of Richtek Technology Corporation.