MAX17119ETI+W [MAXIM]
Interface Circuit, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, TQFN-28;
| 型号： | MAX17119ETI+W |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Interface Circuit, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, TQFN-28 信息通信管理 接口集成电路 |
| 文件： | 总11页 (文件大小：1691K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4952; Rev 0; 12/09
10-Channel Scan Driver
for TFT LCD with GPM Function
General Description
Features
S High-Voltage Level-Shifting Scan Drivers
The MAX17119 includes a 10-channel, high-voltage,
level-shifting scan driver with a gate-pulse modulation
(GPM) feature to shape the corner of the scan-driver out-
put to reduce flicker. The device is optimized for thin-film
transistor (TFT) liquid-crystal display (LCD) applications.
Logic-Level Inputs
+38V to -12V Outputs
GPM Feature
Discharge Channel
The high-voltage level-shifting scan driver is designed to
drive the TFT panel gate logic. Its 10 outputs swing from
+38V (maximum) to -12V (minimum) and can swiftly drive
capacitive loads. There are two positive supply inputs
that provide flexibility for system design.
S Thermal-Overload Protection
S 28-Pin, 5mm x 5mm Thin QFN Package
Ordering Information
The GPM feature is employed to shape the corner of the
falling edge of the clock channels. This reduces flicker,
and therefore improves the display quality.
PART
TEMP RANGE
PIN-PACKAGE
MAX17119ETI+
-40NC to +85NC
28 TQFN
The MAX17119 also features a dedicated discharge
channel and an integrated voltage detector. When the
system shuts down, the voltage detector commands the
discharge channel to swing its output to positive sup-
ply voltage so as to remove any residual image on the
display quickly.
+Denotes lead(Pb)-free/RoHS-compliant package.
The MAX17119 is available in a 28-pin, 5mm x 5mm, thin
QFN package with a maximum thickness of 0.8mm for
thin LCD panels.
Applications
LCD Monitors
LCD TVs
_______________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
10-Channel Scan Driver
for TFT LCD with GPM Function
ABSOLUTE MAXIMUM RATINGS
A1–A9, VSENSE, FLK1, FLK2, FLK3 to GND..........-0.3V to +6V
GON1, GON2 to GND...........................................-0.3V to +40V
GOFF to GND........................................................-14V to +0.3V
GON2 RMS Current..........................................................380mA
GOFF RMS Current ..........................................................600mA
Continuous Power Dissipation (T = +70NC)
A
Y1–Y7, YDCHG to GND ........(V
Y8, Y9 to GND.......................(V
- 0.3V) to (V
- 0.3V) to (V
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
28-Pin, 5mm x 5mm TQFN
GOFF
GOFF
GON1
GON2
GON1
GON1
(derate 34.5mW/NC above +70NC)..........................2758.6mW
Operating Temperature Range.......................... -40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
RE to GND............................................-0.3V to (V
Y1–Y6 to RE...........................(V - 0.3V) to (V
GOFF
Y1–Y6, YDCHG Load RMS Current .................................350mA
GON1 RMS Current ........................................................600mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
= 30V, V
= -6.2V, T = 0°C to +85°C. Typical values are at T = +25°C, unless otherwise noted.)
GON_
GOFF
A
A
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-VOLTAGE DRIVER BLOCK
GON_ Input-Voltage Range
GOFF Input-Voltage Range
GOFF Supply Current
12
38
-2
V
V
-12
A1–A9 = 3.3V, VSENSE = GND, no load
A1–A9 = 3.3V, VSENSE = GND, no load
100
450
200
750
FA
FA
GON_ Total Supply Current
Output Voltage Low
(Y1–Y9, YDCHG)
GOFF + GOFF +
I
I
I
10mA
10mA
V
V
OUT =
OUT =
0.08
GON1 - GON1 -
0.16 0.08
GON2 - GON2 -
0.16
Output Voltage High
(Y1–Y7, YDCHG)
Output Voltage High (Y8, Y9)
Rise Time (Y1–Y7, YDCHG)
Fall Time (Y1–Y7, YDCHG)
Rise Time (Y8, Y9)
= 10mA
V
OUT
0.16
0.08
T
= +25NC , V
= 30V and V
GOFF
= -6.2V
= -6.2V
= -6.2V
= -6.2V
A
GON1
GON1
GON2
GON2
50
200
120
200
120
ns
ns
ns
ns
(Note 1)
T
= +25NC , V
= 30 V and V
A
GOFF
GOFF
GOFF
40
50
40
(Note 1)
T
= +25NC , V
= 30V and V
= 30V and V
A
(Note 1)
T
= +25NC , V
A
Fall Time (Y8, Y9)
(Note 1)
Propagation Delay A_ Rising to
Y_ Rising, VSENSE Falling to
YDCHG Rising
With V
= 30V and V
= -6.2V (Note 1)
= -6.2V (Note 1)
50
50
ns
ns
GON_
GON_
GOFF
GOFF
Propagation Delay A_ Falling
to Y_ Falling, VSENSE Rising to
YDCHG Falling
With V
= 30V and V
2
______________________________________________________________________________________
10-Channel Scan Driver
for TFT LCD with GPM Function
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
= 30V, V
= -6.2V, T = 0°C to +85°C. Typical values are at T = +25°C, unless otherwise noted.)
GON_
GOFF
A
A
PARAMETER
CONDITIONS
MIN
TYP
50
MAX
UNITS
ns
Propagation Delay FLK_ Falling
to Y_ Discharge
I
Y_ to RE Switch On-Resistance
50
100
CONTROL INPUTS
Logic Input-Voltage Range
(A1–A9)
5.5
0.8
V
V
Logic Input Voltage Low
(A1–A9)
Logic Input Voltage High
(A1–A9, VSENSE)
2
V
Logic Input-Leakage Current
(A1–A9)
0V < A_, VSENSE < 5.5V, T = +25°C
-1
+1
FA
A
VOLTAGE DETECTOR
VSENSE Voltage Range
VSENSE Bias Current
VSENSE Threshold Voltage
THERMAL PROTECTION
Thermal Shutdown
5.5
8
V
FA
V
VSENSE = 1.5V
Falling edge
2.3
4.6
1.158
1.218
1.278
Rising edge, hysteresis = 15NC
+160
NC
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
= 30V, V
= -6.2V, T = -40°C to +85°C.) (Note 2)
GON_
GOFF
A
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-VOLTAGE DRIVER BLOCK
GON_ Input-Voltage Range
GOFF Input-Voltage Range
GOFF Supply Current
12
38
-2
V
V
-12
A1–A9 = 3.3V, VSENSE = GND, no load
A1–A9 = 3.3V, VSENSE = GND, no load
200
750
FA
FA
GON_ Total Supply Current
Output Voltage Low
(Y1–Y9, YDCHG)
GOFF +
0.16
I
= 10mA
V
OUT
_______________________________________________________________________________________
3
10-Channel Scan Driver
for TFT LCD with GPM Function
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
= 30V, V
= -6.2V, T = -40°C to +85°C.) (Note 2)
GON_
GOFF
A
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage High
(Y1–Y7, YDCHG)
GON1 -
0.16
I
I
= 10mA
V
OUT
GON2 -
0.16
Output Voltage High (Y8, Y9)
Rise Time (Y1–Y7, YDCHG)
Fall Time (Y1–Y7, YDCHG)
Rise Time (Y8, Y9)
= 10mA
V
OUT
T
= +25NC, V
= 30V and V
= 30V and V
= -6.2V
= -6.2V
= -6.2V
= -6.2V
A
GON1
GOFF
200
120
200
ns
ns
ns
(Note 1)
T
= +25NC, V
A
GON1
GOFF
(Note 1)
o
T
= +25 C, V
= 30V and V
GON2 GOFF
A
(Note 1)
T
= +25NC , V
= 30V and V
GOFF
A
GON2
Fall Time (Y8, Y9)
120
100
ns
(Note 1)
I
Y_ to RE Switch On-Resistance
CONTROL INPUTS
Logic Input-Voltage Range
(A1–A9)
5.5
0.8
V
V
V
Logic Input Voltage Low
(A1–A9)
Logic Input Voltage High
(A1–A9)
2
VOLTAGE DETECTOR
VSENSE Voltage Range
VSENSE Threshold Voltage
VSENSE Pullup Current
5.5
1.278
8
V
V
Falling edge
1.158
2.3
VSENSE = 1.5V
FA
Note 1: The panel models for different channels are illustrated in Figure 4.
Note 2: -40°C specs are guaranteed by design, not production tested.
4
______________________________________________________________________________________
10-Channel Scan Driver
for TFT LCD with GPM Function
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
SCAN-DRIVER OUTPUT RISING EDGE (Y1–Y6)
PROPAGATION DELAY AND RISE TIME
SCAN-DRIVER OUTPUT FALLING EDGE (Y1–Y6)
PROPAGATION DELAY AND FALL TIME
MAX17119 toc01
MAX17119 toc02
V
V
A
A
2V/div
2V/div
0V
0V
V
Y
V
Y
10V/div
10V/div
0V
0V
100ns/div
100ns/div
SCAN-DRIVER OUTPUT RISING EDGE (Y7)
SCAN-DRIVER OUTPUT FALLING EDGE (Y7)
PROPAGATION DELAY AND RISE TIME
PROPAGATION DELAY AND FALL TIME
MAX17119 toc03
MAX17119 toc04
V
A7
2V/div
V
A7
2V/div
0V
0V
V
V
Y7
Y7
10V/div
10V/div
0V
0V
20ns/div
20ns/div
SCAN-DRIVER OUTPUT RISING EDGE (Y8 AND Y9)
SCAN-DRIVER OUTPUT FALLING EDGE (Y8 AND Y9)
PROPAGATION DELAY AND RISE TIME
PROPAGATION DELAY AND FALL TIME
MAX17119 toc05
MAX17119 toc06
V
A8
V
A8
2V/div
2V/div
0V
0V
V
Y8
V
10V/div
Y8
10V/div
0V
0V
100ns/div
100ns/div
_______________________________________________________________________________________
5
10-Channel Scan Driver
for TFT LCD with GPM Function
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
GPM PROPAGATION DELAY-FLK_
FALLING TO Y_ FALLING
SCAN-DRIVER OUTPUT WITH GPM
(FLK2 = FLK3 = GND, 1FLK-INPUT MODE)
(FLK2 = FLK3 = GND, 1FLK-INPUT MODE)
MAX17119 toc07
MAX17119 toc08
V
FLK1
V
FLK1
0V 5V/div
5V/div
0V
V
A1
0V 5V/div
V
A2
0V 5V/div
30V
V
A3
V
Y1
0V 5V/div
1V/div
V
Y1
20V/div
0V
4Fs/div
100ns/div
GPM PROPAGATION DELAY-FLK_
FALLING TO Y_ FALLING
SCAN-DRIVER OUTPUT WITH GPM
(FLK3 = GND, 2 FLK-INPUT MODE)
(FLK3 = GND, 2 FLK-INPUT MODE)
MAX17119 toc10
MAX17119 toc09
V
FLK1
0V 10V/div
V
FLK2
V
FLK2
5V/div
0V
0V
0V
0V
10V/div
0V
V
A1
10V/div
V
A2
10V/div
30V
V
A3
10V/div
V
Y1
2V/div
V
Y1
10V/div
0V
100ns/div
2Fs/div
GPM PROPAGATION DELAY-FLK_
FALLING TO Y_ FALLING
SCAN-DRIVER OUTPUT WITH GPM
(3 FLK-INPUT MODE)
(3 FLK-INPUT MODE)
MAX17119 toc11
MAX17119 toc12
V
FLK1
0V 10V/div
V
FLK2
V
FLK2
0V
0V
0V
0V
0V
5V/div
10V/div
V
FLK3
0V
10V/div
V
A4
10V/div
V
A5
30V
10V/div
V
A6
V
Y4
10V/div
1V/div
V
Y4
10V/div
0V
2Fs/div
40ns/div
6
______________________________________________________________________________________
10-Channel Scan Driver
for TFT LCD with GPM Function
Pin Configuration
TOP VIEW
Y9 Y8 Y7 Y6 Y5 Y4 Y3
21 20 19 18 17 16 15
14
13
YDCHG 22
GND 23
Y2
Y1
12 GON2
24
25
26
27
28
RE
FLK3
GOFF
GON1
A1
11
10
9
MAX17119
FLK2
FLK1
+
8
A2
VSENSE
1
2
3
4
5
6
7
A9 A8 A7 A6 A5 A4 A3
TQFN
5mm x 5mm
Pin Description
PIN
NAME
FUNCTION
1–9
A9–A1
Level-Shifter Logic-Level Input
Gate-On Supply Input 1. GON1 is the positive supply for the Y1–Y7 and YDCHG level shifters.
Bypass GON1 to ground with a minimum of 1FF ceramic capacitor.
10
11
12
GON1
GOFF
GON2
Gate-Off Supply Input. GOFF is the negative supply for the Y1–Y9 and YDCHG. Bypass GOFF to
ground with a minimum of 1FF ceramic capacitor.
Gate-On Supply Input 2. GON2 is the positive supply for the Y8 and Y9 level shifters. Bypass GON2
to ground with a minimum of 1FF ceramic capacitor.
13–21
22
Y1–Y9
YDCHG
GND
Level-Shifter Outputs
Level-Shifter Output for Discharge Function
Ground
23
24
RE
Resistor Connection Input for GPM Function
GPM Control Input for Level-Shifter Outputs Y3 and Y6
GPM Control Input for Level-Shifter Outputs Y2 and Y5
GPM Control Input for Level-Shifter Outputs Y1 and Y4
25
FLK3
FLK2
FLK1
26
27
Input Voltage Sense for Voltage Detector. This pin is usually connected to V
in the system
LOGIC
through a resistor-divider (R1 and R2). When V
of the level-shifter channel is turned on and YDCHG is connected to GON1 internally. There is a
4.6FA internal pullup current on VSENSE and both R1 and R2 should be less than 50kI.
is below its threshold, the discharge channel
VSENSE
28
—
VSENSE
EP
Exposed Backside Pad. Connect to GOFF. Copper area should be maximized for thermal
performance.
_______________________________________________________________________________________
7
10-Channel Scan Driver
for TFT LCD with GPM Function
Typical Operating Circuit
V
V
GON2
GON1
The MAX17119 typical operating circuit is shown in
Figure 1. The positive supply voltage for GON1 and
GON2 is 30V (typ) and negative supply voltage for GOFF
is -6.2V (typ).
1µF
1µF
GON2
GON1
FLK1
RE
Detailed Description
FLK2
FLK3
A1
3.4kI
The MAX17119 includes a 10-channel, high-voltage,
level-shifting scan driver with a GPM feature. The device
is optimized for TFT-LCD applications. The GPM feature
is employed to shape the corner of the falling edge of
the clock channels. This reduces flicker, and therefore
improves the display quality. There is a dedicated dis-
charge channel. It works with the integrated voltage
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
A2
A3
detector to swing its output to V
when the system
GON1
MAX17119
FROM
TCON
shuts down so as to remove any residual image on the
display quickly. Figure 2 shows the MAX17119 functional
diagram.
A4
A5
High-Voltage Level-Shifting Scan Driver
The MAX17119 includes 10-channel, high-voltage, level-
shifting buffers that can buffer logic inputs and shift
them to a desired level to drive TFT-LCD row logic. The
driver outputs swing between their power-supply rails,
according to the input-logic level. The driver output is
A6
TO
PANEL
A7
A8
V
V
when its respective input is logic-low, and is
when its respective input is logic-high. These 10
GOFF
GON_
A9
FROM
SYSTEM
(3.3V)
driver channels are grouped for different GON supplies.
Y1–Y7 and YDCHG are supplied from GON1; Y8 and Y9
are supplied from GON2. The high-voltage, level-shifting
scan drivers can swing from +38V to -12V and can
swiftly drive capacitive loads.
V
LOGIC
V
R1
33kI
SENSE
YDCHG
R2
47kI
GPM Function
The six clock channels of Y1–Y6 support the GPM func-
tion, which shaves the corner of the scan-driver outputs’
falling edge depends on FLK_. The corner shaving is
achieved by turning off the scan-driver switches, and
turning on the GPM switches to let the panel load capaci-
tance discharge through the resistor at the RE pin as the
functional diagram shows (Figure 2).
EP
GOFF
1µF
GND
V
GOFF
Figure 1. Typical Operating Circuit
8
______________________________________________________________________________________
10-Channel Scan Driver
for TFT LCD with GPM Function
V
GON1
MAX17119
GON1
FLK1
FLK2
FLK3
LDO
REF
RE
Y1
A1
A2
Y2
A3
A4
Y3
Y4
GATE
DRIVE
LOGIC
AND
A5
A6
GPM
CONTROL
Y5
Y6
A7
Y7
A8
A9
Y8
Y9
V
LOGIC
VSENSE
YDCHG
COMP
REF
EP
GND
GON2
GOFF
V
GON2
V
GOFF
Figure 2. MAX17119 Functional Diagram
_______________________________________________________________________________________
9
10-Channel Scan Driver
for TFT LCD with GPM Function
A simple timing sequence of GPM is shown in Figure 3.
Power-On and -Off Sequence
Figure 5 shows the power-on and power-off sequence for
the application. In general, the supply voltage for the tim-
The scan-driver outputs (Y1–Y6) follow their respective
inputs (A1–A6). On the falling edge of V , the corner
FLK_
is implemented until V is driven to
shaving on V
ing controller (V
) is ready first. The timing controller
should send input A_ to the scan drivers after V and
Y_
(V goes low).
Y_
LOGIC
V
GOFF A_
GON_
_ are ready. Since the MAX17119 uses V
V
GOFF
GOFF_
The GPM function has three operating modes. Table 1
shows the detailed configurations of FLK1, 2, 3 and A1–
A9 input signals for these modes.
V
as substrate instead of GND, GOFF should go below -2V
at least before VGON_ starts to build up, as in Figure 5.
Discharge Function
One scan-driver output (YDCHG) is a dedicated dis-
charge channel for removing residual image on display
during power-down. The integrated voltage detector
monitors system supplies, such as 3.3V logic supply.
Through a resistor-divider, the MAX17119 commands
Y_
82I
1nF
4.5nF
the discharge channel to swing its output to V
the input to the voltage detector (VSENSE) is lower than
threshold.
once
GON1
Figure 4. Test Load
Load Models for Different Channels
Figure 4 shows the test load.
0V
-2V
V
GOFF
9V
V
, V
GON1 GON2
V
0V
A_
TIME
TIME
V
LOGIC
0V
0V
V
FLK_
Y_
V
FLK_
V
GON1
V
V
A_
0V
0V
TIME
V
GOFF
V
Y_
Figure 5. MAX17119 Power-On and -Off Sequence
Figure 3. GPM Function Timing Sequence
Table 1. GPM Operating Modes
ꢀ
FLK1 FLK2 FLK3 A1
A2
A3
A4
A5
A6
A7
A8
A9
Y1–Y9
All
Typical HDTV application
(1-FLK line)
T(*)
T
L
T
T
L
L
T
T
T
T
T
T
T
T
T
T
T
T
connected
to panel
Y3 and Y6
high
impedance
Typical monitor application
(2-FLK lines)
T
T
H
T
T
T
T
T
H
T
T
T
T
T
T
T
All
Typical full HDTV applica-
tion (3-FLK lines)
T
connected
to panel
T(*) means from TCON; L: logic-low; H: logic-high
10 _____________________________________________________________________________________
10-Channel Scan Driver
for TFT LCD with GPM Function
A7, A8, and A9 drive a very light load and that the power
Thermal Protection
The MAX17119 includes a thermal-protection circuit.
Thermal-overload protection prevents excessive power
dissipation from overheating the MAX17119. When the
loss associated is negligible, the power loss is:
2
PD
= 6 x C
x (VGON1 - V
) x f
SCAN
PANEL
GOFF SCAN
If the six scan drivers (A1–A6) operate at a frequency of
50kHz, the load of the six outputs is 5nF, and the supply
voltage difference is 30V, then the power dissipated is
1.35W.
junction temperature exceeds T = +160NC (typ), the
J
device shuts down and all the outputs are put into high-
impedance mode. The thermal protection is not latched
and the device recovers once the temperature drops
below the hysteretic threshold (+15NC typ).
PCB Layout and Grounding
Careful PCB layout is important for proper operation. Use
the following guidelines for good PCB layout:
Applications Information
• Avoid using vias in the high-current paths. If vias are
unavoidable, use many vias in parallel to reduce resis-
tance and inductance.
Power Dissipation
An IC’s maximum power dissipation depends on the
thermal resistance from the die to the ambient environ-
ment and the ambient temperature. The thermal resis-
tance depends on the IC package, PCB copper area,
other thermal mass, and airflow. More PCB copper, cool-
er ambient air, and more airflow increase the possible
dissipation, while less copper or warmer air decreases
the IC’s dissipation capability. The major component of
power dissipation is the power dissipated in the high-
voltage scan drivers.
• Create a GOFF plane and connect it to EP.
• Create a ground island (GND) consisting of the supply
capacitors’ grounds and GND pin.
• Connect all these together with short, wide traces or a
small ground plane.
• Place the capacitors as close as possible to the
respective supply voltage pins (GON1, GON2, and
GOFF).
When driving a pure capacitive load, the power dissipat-
ed by the scan-driver outputs depends on the scan fre-
quency, the capacitive load, and the difference between
the GON_ and GOFF supply voltages. Assuming only
Refer to the MAX17119 Evaluation Kit for an example of
proper board layout.
Chip Information
Package Information
PROCESS: BiCMOS
For the latest package outline information and land pat-
terns, go to www.maxim-ic.com/packages. Note that
a “+”, “#”, or “-” in the package code indicates RoHS
status only. Package drawings may show a different suf-
fix character, but the drawing pertains to the package
regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
8 TQFN
T2855+6
21-0139
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
11
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2009 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
相关型号：
MAX1711EEG+
Switching Controller, Voltage-mode, 550kHz Switching Freq-Max, CMOS, PDSO24, 0.150 INCH, 0.025 INCH PITCH, QSOP-24
MAXIM
MAX1711EEG-T
SWITCHING CONTROLLER, 550kHz SWITCHING FREQ-MAX, PDSO24, 0.150 INCH, 0.025 INCH PITCH, QSOP-24
ROCHESTER
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