RT9396 Datasheet, PDF (1/17 Pages) Richtek Technology Corporation – I2C Interface PMIC with 6-Channel WLED Driver and 4-LDO

RT9396
I²C Interface PMIC with 6-Channel WLED Driver and 4-LDO
General Description
The RT9396 is a power management IC (PMIC) for
backlighting and phone camera applications. The PMIC
contains a 6-Channel charge pump white LED driver and
four low dropout linear regulators.
The charge pump drives up to 6 white LEDs with regulated
constant current for uniform intensity. Each channel
(LED1 to LED6) supports up to 25mA of current. These
6-Channels can be also programmed as 4 plus 2-Channels
or 5 plus 1-Channel with different current setting for
auxiliary LED application. The RT9396 maintains highest
efficiency by utilizing a x1/ x1.5/ x2 fractional charge pump
and low dropout current regulators. An internal 6-bit DAC
is used for backlight brightness control. Users can easily
configure up to 64 steps of LED current via the I²C interface
control.
The RT9396 also comprises low noise, low dropout
regulators, which provide up to 200mA of current for each
of the four channels. The four LDOs deliver 3% output
accuracy and low dropout voltage of 200mV @ 200mA.
Users can easily configure LDO output voltage via the I²C
interface control. The LDOs also provide current limiting
and over temperature functions.
The RT9396 is available in a WQFN-24L 3x3 package.
Ordering Information
RT9396
Package Type
QW : WQFN-24L 3x3 (COL) (W-Type)
Note :
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.
Features
z Tri-Mode (x1/x1.5/x2) Charge Pump
z Maximum 25mA x 6-Channel LED Backlighting
Output Current
z Support Main/Sub (4+2/5+1) LED Function
z 64 Steps Programmable LED Current
z Support PWM Dimming Function
z Fade In/Out Via I²C Control
z 4 Low Dropout Regulators
z Maximum 200mA x 4-Channel LDO Output Current
z 16-Level LDO Output Voltage Setting
z I²C Programmable Independent LDO Channel
ON/OFF Control
z Over Temperature Protection
z Thin 24-Lead WQFN Package
z RoHS Compliant and Halogen Free
Applications
z Cellular Phones
z PDAs and Smart Phones
Pin Configurations
(TOP VIEW)
24 23 22 21 20 19 18
PGND 1
C2N 2
C1N 3
C1P 4
C2P 5
17 SCL
16 SDA
15 EN
14 PWM
13 CF
6 7 8 9 10 11 12
WQFN-24L 3x3 (COL)
DS9396-01 April 2011
www.richtek.com
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