RT9363 Datasheet, PDF (1/12 Pages) Richtek Technology Corporation – Smallest 60mA 3-Channel Charge Pump White LED Driver with Low Dropout Current Source

RT9363
Smallest 60mA 3-Channel Charge Pump White LED Driver
with Low Dropout Current Source
General Description
The RT9363 is a high efficiency and cost effective charge
pump white LED driver. It supports up to 3 white LEDs
with regulated constant current for uniform intensity. The
RT9363 maintains the highest efficiency by utilizing a
x1/x2 charge pump and low dropout current regulators.
User can easily configure each LED current up to 20mA by
a pulse dimming control. The dimming of white LEDs
current can be achieved by applying a pulse signal to the
EN pin. There are totally 16 steps of current could be set
by users.
The operating voltage range is 2.8V to 5.0V. Internal soft
start circuitry effectively reduces the inrush current while
both start-up and mode transition. RT9363 also provides
comprehensive protections such as short circuit protection.
The load is disconnected from VIN while shutdown and
the shutdown current is less than 10μA.
RT9363 is available in a TSOT-23-8 package (1.0mm max
height).
Ordering Information
RT9363
Package Type
J8 : TSOT-23-8
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Note :
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.
Features
z Very High Efficiency Over 80% of Battery Life
z Support up to 3 White LEDs
z Support up to 60mA Output Current
z 1% Typical LED Current Matching
z Soft Start Function
z Short Circuit Protection Function
z Auto Charge Pump Mode Selection
z 250kHz Fixed Frequency Oscillator
z Output Over Voltage Protection
z 16-Step Brightness Control
z Low Input Noise and EMI
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Mobile Phone, DSC, MP3
z White LED Backlighting
z LCDDisplay Supply
Pin Configurations
(TOP VIEW)
87 6 5
2 34
TSOT-23-8
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS9363-03 April 2011
www.richtek.com
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