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PDF MAX17120 Data sheet ( Hoja de datos )
| Número de pieza | MAX17120 | |
| Descripción | Triple High-Voltage Scan Driver | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-4809; Rev 0; 8/09
EVAALVUAAILTAIOBNLEKIT
Triple High-Voltage Scan Driver for TFT LCD
General Description
The MAX17120 includes three high-voltage level-shifting
scan drivers for TFT panel integrated gate logic. Each
scan driver has two channels that switch complementarily.
The scan-driver outputs swing from +40V to -30V and
can swiftly drive capacitive loads. To save power, the
scan-driver’s complementary outputs share the charge
of their capacitive load before they change states.
The MAX17120 is available in a 32-pin, 5mm x 5mm thin
QFN package with a maximum thickness of 0.8mm for
ultra-thin LCD panels.
Applications
Notebook Computer Displays
LCD Monitor and Small TV Panels
Features
S +40V to -30V Output Swing Range
S Fast Slew Rate for High Capacitive Load
S Load Charge Sharing for Power Saving
S 32-Pin, 5mm x 5mm Thin QFN Package
PART
MAX17120ETJ+
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
32 TQFN
Simplified Operating Circuit
VVON = 25V VGOFF = -15V
Pin Configuration
TOP VIEW
CKVB2
CKVBCS2
CKVCS2
CKV2
STVP
CKVB3
CKVBCS3
CKVCS3
CKV3
MAX17120
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
VVDD = 3.3V
CKVBCS2 1
CKVB2 2
N.C. 3
CKV3 4
CKVCS3 5
CKVBCS3 6
CKVB3 7
STVP 8
32 31 30 29 28 27 26 25
+ 24 VON
23 N.C.
22 VOFF
MAX17120
21 N.C.
20 VDD
19 DISH
18 N.C.
17 DLY
9 10 11 12 13 14 15 16
STV
CPV1
T-CON CPV2
CPV3
EN
TQFN
5mm x 5mm
________________________________________________________________ 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.
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1 page  
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Triple High-Voltage Scan Driver for TFT LCD
ELECTRICAL CHARACTERISTICS (continued)
(VVDD = VEN = +3.3V, VVON = 25V, VVOFF = -15V, STV = CPV1 = CPV2 = CPV3 = GND, TA = -40NC to +85NC, unless otherwise
noted.) (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
STV = VDD, CLOAD = 15nF, RLOAD = 100I, 85% to 15%
CKV_, CKVB_ Slew Rate Falling (Note 2)
100
V/Fs
STV = VDD, CLOAD = 4.7nF, 80% to 20%
CKVCS-to-CKVBCS_ Resistance I(CKVCS to CKVCSB_) = 10mA
100
100 I
STVP Output Low
I(STVP) = -20mA
35 I
STVP Output High
I(STVP) = 20mA
70 I
STV Rising to STVP Rising
STV Falling to STVP Falling
STVP Slew Rate Rising
STVP Slew Rate Falling
CPV_ Input Frequency
tPR
tPF
CLOAD = 4.7nF
CLOAD = 4.7nF
200 ns
200 ns
20 V/Fs
20 V/Fs
85 kHz
Input Low Voltage
Input High Voltage
DISH Low Voltage
CPV_, STV, EN, 2.2V < VVDD < 3.6V
CPV_, STV, EN, 2.2V < VVDD < 3.6V
0.8 V
2V
-1.5 V
DISH High Voltage
-0.5 V
DISH Input Impedance
DISH Switch Resistance
DLY Output Current
VDISH = -2V
VDISH = -2V
DLY = GND
600 kI
500 I
3 5 FA
DLY Sink Current
DLY Enable Threshold
EN = GND, VDLY = 0.4V
Rising
5
1.60
1.70
mA
V
Note 1: Guaranteed by design, not production tested.
Note 2: Limits are 100% production tested at TA = +25NC. Maximum and minimum limits over temperature are guaranteed by
design and characterization.
_______________________________________________________________________________________ 5
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Triple High-Voltage Scan Driver for TFT LCD
VDD UVLO
STV
CPV1
CPV2
CPV3
LOGIC AND GATE
DRIVER
+
THERMAL
SHUTDOWN
DLY
EN
GND
DSCHG
0.5V
DISH
DELAY
VOFF
MAX17120
VON
CKV1
CKVB1
CKV2
CKVB2
CKV3
CKVB3
STVP
VOFF
CKVCS1
CKVBCS1
CKVCS2
CKVBCS2
CKVCS3
CKVBCS3
Figure 2. Functional Diagram
Detailed Description
The MAX17120 contains three high-voltage level-shifting
scan drivers for active-matrix TFT LCDs. Figure 2 is the
functional diagram.
Undervoltage Lockout on VDD
The undervoltage lockout (VDD-UVLO) circuit on VDD
compares the input voltage at VDD with the VDD-UVLO
(2V typ) to ensure that the input voltage is high enough
for reliable operation. There is 100mV of hysteresis to
prevent supply transients from causing a restart. When
the VDD voltage is below VDD-UVLO, the scan-driver
outputs are high impedance.
______________________________________________________________________________________ 11
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| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX17120.PDF ] | |
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