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  Richtek Technology Electronic Components Datasheet  

RT6908 Datasheet

PMIC

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RT6908 pdf
®
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, VGH; a negative
charge pump regulator provides the gate-low voltage, VGL.
AVDD, VGH and VGL 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 VI/O
z 1-CH Sync. Buck Controller for VCORE
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
SCL 6
PGND
26
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
1


  Richtek Technology Electronic Components Datasheet  

RT6908 Datasheet

PMIC

No Preview Available !

RT6908 pdf
RT6908
Typical Application Circuit
VCORE
1.1V
VI/O
3.3V
VIN
C24
22µF
x3
VIN
12V
C13
22µF x
2
C21
10µF
R14
1.2k
C23
470pF
C1
22µF
L1
6.8µH
D1
C2
10µF
C6
1µF
C7
1µF
14, 15, 16
LX
35 AVIN
LXI 10
GD 9
AVDD 8
33 VL
RT6908
COMP 11
Q1
C3
2.2nF
C4
4.7nF
R22
220k
C30
330pF
AVDD
15.6V
C5
120µF
C8
10µF
36 VINB1
C12
100pF
L2 10µH
39, 40 LXB1
C11
R2 0.1µF
47k 38 BOOT1
2 FBB1
R3
15k
C19
470pF
R4
120k
3 COMP1
L3
4.7µH
R11
10k
R12
24k
R5
VL
R6
VL
M1
C20
0.22µF
R27
R10
20k
C22
1nF
R13
1.5
M2
C25
1nF
R23
24k
31 EN_I2C
32 EN
30 BOOT2
28 DHB2
29 LXB2
26 DLB2
24 FBB2
DRVP 20
R1
100k
Q2
C9
1µF
AVDD
C10 D2 C14
47nF
0.22µF
D3
R7
6.8
R8
6.8
LXB1
C17
22nF
CRST 22
C15
0.1µF
D4 C16
0.22µF
D5
R9
6.8
R10
6.8
LX
VGH 19
A0 12
C18
10µF
VI/O
VGH
35.5V
SCL 6
SDA 5
RSTB 4
R16 R17 R18
4.7k 4.7k 4.7k
SCL
SDA
RSTB
C26 10pF
R24 33k
23 COMP2
25 ILIMIT2
DRVN 21
Q3
R19
100k
VI/O
R25 47k
7 VDET
R26
15k
VGL 18
AGND PGND
34 1, 13, 17,
41 (Exposed Pad)
C27
47nF D6 C28
0.22µF
D7
R20
6.8
R21
6.8
C29
10µF
LXB1
VGL
-6V
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS6908-01 March 2013


Part Number RT6908
Description PMIC
Maker Richtek
Total Page 22 Pages
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