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RT8901 PDF 데이터시트 ( Data , Function )

부품번호 RT8901 기능
기능 35V Gate Pulse Modulator
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RT8901 데이터시트, 핀배열, 회로
®
RT8901
35V Gate Pulse Modulator for LCD Panels
General Description
The Gate Pulse Modulator (GPM) is specially designed
for the application of gate driver in TFT LCD panels. The
GPM is controlled by frame signals from timing controller
to modulate the Gate-On voltage that acts a flicker
compensation circuit to reduce the coupling effect between
gate lines and pixels. It also can delay the Gate-On voltage
while power-on for achieving a correct power-on-sequence
for gate driver ICs. Both of the delay time for flicker
compensation and power-on-sequence are programmable
by external resistors and capacitors.
Features
Flicker Compensation Circuit
Reduction of Coupling Effect Between Gate Line
and Pixel
Programmable Power Sequence for Gate Driver IC
Operation from 20V to 35V Positive Supply Input
Adjustable Output Delay Time
RoHS Compliant and 100% Lead (Pb)-Free
Applications
TFT-LCDPanels
Ordering Information
RT8901
Typical Application Circuit
Package Type
S : SOP-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.
VCD
VFLK
VDPM
4 CD
VGH 1
RT8901
8 VFLK
VGH
C1
1µF
R2
33k
6 VDPM
VGHM 2
R1
C3
100pF
RE 3 1.2k
VGHM
C2
1.5nF
7 GND
VD 5
R5A 200k
VAVDD
R5B
20k
Marking Information
RT8901GS
RT8901GS : Product Number
RT8901
GSYMDNN
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
VGH
VGHM
RE
CD
2
3
4
8 VFLK
7 GND
6 VDPM
5 VD
Figure 1. Typical Application Circuit for Mode A and
Mode C
VFLK
VDPM
C4
100pF 4 CD
VGH 1
8
RT8901
VFLK
R2
33k
6 VDPM
VGHM 2
R1
C3
100pF
RE 3 1.2k
VGH
C1
1µF
VGHM
C2
1.5nF
7 GND
VD 5
R5A 200k
VAVDD
R5B
20k
SOP-8
Figure 2. Typical Application Circuit for Mode B
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS8901-03 October 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1




RT8901 pdf, 반도체, 판매, 대치품
RT8901
Absolute Maximum Ratings (Note 1)
VGH, VGHM, RE to GND ------------------------------------------------------------------------------------------------ 0.3V to 40V
VFLK, VDPM, VD, CD to GND ----------------------------------------------------------------------------------------- 0.3V to 6.5V
Output Current Source from VGH (Pulse Width <500ns with period >2.5μs) ------------------------------ 1A
Output Current (rms value), R1 = 0Ω -------------------------------------------------------------------------------- 133mA
Power Dissipation, PD @ TA = 25°C
SOP-8 ------------------------------------------------------------------------------------------------------------------------ 0.833W
Package Thermal Resistance (Note 2)
SOP-8, θJA ------------------------------------------------------------------------------------------------------------------ 120°C/W
SOP-8, θJC ----------------------------------------------------------------------------------------------------------------- 30°C/W
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Junction Temperature ---------------------------------------------------------------------------------------------------- 150°C
Storage Temperature Range -------------------------------------------------------------------------------------------- 65°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
Junction Temperature Range -------------------------------------------------------------------------------------------- 40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------------------- 40°C to 85°C
Electrical Characteristics
(VGH = +30V, GND = 0V, TA = 25°C, unless otherwise specified.)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Input Supply Voltage
Input Supply Current
Adjustable VGHM Falling
Regulation Voltage
VFLK Threshold Logic- High
Voltage
Logic- Low
VFLK Input Leakage Current
VFLK to VGHM Rising
Propagation Delay
VFLK to VGHM Falling
Propagation Delay at Mode A
VFLK to VGHM Falling
Propagation Delay at Mode C
Operation Frequency
VVGH
IVGH
10VD
CD = VDPM = 5V, VVFLK = 5V
fVFLK = 25kHz, VGHM at Low, VGHM
with 1.5nF, R1 = 1.2k
VVFLK_H
VVFLK_L
ILeak
VVFLK = 0V or High
R1 = 1.2k, VGHM with 1.5nF,
tPLH
VVFLK = 0 to 3V, measure
VVFLK = 1.5V to 10% VGHM
CD = 5V, R1 = 1.2k, VGHM with
tPHL
1.5nF , VVFLK = 3 to 0V, measure
VVFLK = 1.5V to 90% VGHM
CD = 3.3V, R1 = 1.2k, VGHM with
tPHL
1.5nF , VVFLK = 3 to 0V, measure
VVFLK = 1.5V to 90% VGHM
f OSC
20
--
3
1.5
0
1
--
--
--
--
-- 35 V
0.5 1.5 mA
-- VGH V
-- 5.5
V
-- 0.4
1 μA
100 200 ns
100 200 ns
260 --
ns
-- 300 kHz
VDPM Voltage Threshold
VDPM_H VDPM High Logic Threshold
2.4 2.5 2.6 V
CD Mode A Operation Range VCD_A
-- 5 -- V
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
www.richtek.com
4
is a registered trademark of Richtek Technology Corporation.
DS8901-03 October 2013

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RT8901 전자부품, 판매, 대치품
RT8901
VGHM Start Waveform
VGHM Falling Regulation Voltage
VVFLK
(2V/Div)
VVGHM
(10V/Div)
VVDPM
(5V/Div)
VVGH = 0V to 30V, VCD = 5V
VVD = 0V, fVFLK = 50kHz
Time (25μs/Div)
Mode A VGHM Propagation Delay
VVFLK
(2V/Div)
VVGHM
(10V/Div)
VVGH = 30V, VCD = 5V
VVD = 1.6V, fVFLK = 50kHz
Time (2.5μs/Div)
Mode A VGHM Propagation Delay
VVFLK
(2V/Div)
VVFLK
(2V/Div)
VVGHM
(10V/Div)
VVGH = 30V, VCD = 5V
VVFLK = 0V to 3V
Time (25μs/Div)
VVGHM
(10V/Div)
VVGH = 30V, VCD = 5V
VVFLK = 3V to 0V
Time (50ns/Div)
Mode C VGHM Propagation Delay
Mode C VGHM Propagation Delay
VVFLK
(2V/Div)
VVFLK
(2V/Div)
VVGHM
(10V/Div)
VVGH = 30V, VCD = 3.3V
VVFLK = 0V to 3V
Time (25ns/Div)
VVGHM
(10V/Div)
VVGH = 30V, VCD = 3.3V
VVFLK = 3V to 0V
Time (100ns/Div)
Copyright ©2013 Richtek Technology Corporation. All rights reserved.
DS8901-03 October 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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