RT6908 Datasheet, PDF (1/22 Pages) Richtek Technology Corporation – PMIC for TFT LCD TV Panels

®
RT6908
PMIC for TFT LCD TV Panels
General Description
The RT6908 provides a complete set of programmable
multi-functional power solution for TFT LCD panel. The
RT6908 contains a step-up converter for main power and
step-down controllers to provide the logic voltages for the
system. Moreover, a positive charge pump regulator
provides the adjustable gate-high voltage, V_GH; a negative
charge pump regulator provides the gate-low voltage, V_GL.
AVDD, V_GH and V_GL outputs and power sequence can be
programmable through I²C interface.
With its high current capabilities, the device is ideal for
large screen monitor panels and LCD TV applications with
12V supply voltage. The RT6908 is available in a WQFN-
40L 5x5 package.
Ordering Information
RT6908
Package Type
QW : WQFN-40L 5x5 (W-Type)
Lead Plating System
Z : ECO (Ecological Element with
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.
Marking Information
RT6908ZQW : Product Number
RT6908
ZQW
YMDNN
YMDNN : Date Code
Features
z 9V to 16V Input Supply Voltage
z 4.4A Boost Regulator for AVDD with 12.7V to 19V
Programmable Output
z 1-CH Sync. Buck Converter for V_I/O
z 1-CH Sync. Buck Controller for V_CORE
z Negative Charge Pump Regulator for VGL with
−8.1V to −1.8V Programmable Output
z Positive Charge Pump Regulator for VGH with 24.5V
to 40V Programmable Output
z Programmable Sequencing
z Voltage Detection Output
z Over Temperature Protection
z I²C Compatible Interface for Register Control
z Thin 40-Lead WQFN Package
z RoHS Compliant and Halogen Free
Applications
z TFT LCD TV Panel
Pin Configurations
(TOP VIEW)
40 39 38 37 36 35 34 33 32 31
PGND 1
30
FBB1 2
29
COMP1 3
28
RSTB 4
27
SDA 5
PGND
26
SCL 6
25
VDET 7
24
AVDD 8
GD 9
41
23
22
LXI 10
21
11 12 13 14 15 16 17 18 19 20
BOOT2
LXB2
DHB2
NC
DLB2
ILIMIT2
FBB2
COMP2
CRST
DRVN
WQFN-40L 5x5
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS6908-01 March 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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