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PDF MAX17010 Data sheet ( Hoja de datos )
| Número de pieza | MAX17010 | |
| Descripción | Internal-Switch Boost Regulator | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-0709; Rev 0; 3/07
EVAALVUAAILTAIOBNLEKIT
www.DataSheet4U.com
Internal-Switch Boost Regulator with Integrated
High-Voltage Level Shifter and Op Amp
General Description
The MAX17010 contains a high-performance step-up
switching regulator, a high-speed operational amplifier
(op amp), and a high-voltage level-shifting scan driver.
The device is optimized for thin-film transistor (TFT) liquid-
crystal display (LCD) applications.
The step-up DC-DC converter provides the regulated
supply voltage for the panel-source driver ICs. The con-
verter is a 1.2MHz current-mode regulator with an inte-
grated 20V n-channel power MOSFET. The high
switching frequency allows the use of ultra-small induc-
tors and ceramic capacitors. The current-mode control
architecture provides fast transient response to pulsed
loads. The step-up regulator features undervoltage
lockout (UVLO), soft-start, and internal current limit. The
high-current op amp is designed to drive the LCD
backplane (VCOM). The amplifier features high output
current (±150mA), fast slew rate (45V/µs), wide band-
width (20MHz), and rail-to-rail inputs and outputs.
The high-voltage, level-shifting scan driver is designed
to work with panels that incorporate row drivers on the
panel glass. Its eight outputs swing from +30V (max) to
-10V and can swiftly drive capacitive loads.
The MAX17010 is available in a 40-pin thin QFN pack-
age with a maximum thickness of 0.8mm for ultra-thin
LCD panels. The device operates over the -40°C to
+85°C temperature range.
. Applications
Notebook Computer Displays
LCD Monitor Panels
Ordering Information
PART
TEMP RANGE
MAX17010ETL+
-40°C to +85°C
+Denotes a lead-free package.
*EP = Exposed paddle.
PIN-PACKAGE
40 Thin QFN-EP*
(5mm x 5mm)
Features
o 1.8 V to 5.5V IN Supply Voltage Range
o 3mA SUP Quiescent Current (Switching)
o 1.2MHz Current-Mode Step-Up Regulator
Fast Transient Response
High-Accuracy Output Voltage (1.0%)
Built-In 20V, 1.9A, 200mΩ MOSFET
High Efficiency (> 85%)
Digital Soft-Start
o High-Speed Op Amp
150mA Output Current
45V/µs Slew Rate
20MHz, -3dB Bandwidth
o High-Voltage Level-Shifting Scan Drivers
Logic-Level Inputs
+30V to -10V Output Rails
o Thermal-Overload Protection
o 40-Pin, 5mm x 5mm, Thin QFN Package
Minimal Operating Circuit
VIN VMAIN
SHDN
IN
LX
FB
PGND
COMP
SUP
AGND
VL
POS
MAX17010
GON1
GON2
NEG
VCOM
BGND
A1 Y1
A2 Y2
A3 Y3
A4 Y4
A5 Y5
A6 Y6
A7 Y7
A8 Y8
EP
TO VCOM
BACKPLANE
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
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Internal-Switch Boost Regulator with Integrated
High-Voltage Level Shifter and Op Amp
ELECTRICAL CHARACTERISTICS (continued)
(VIN = V SHDN = +3V, Circuit of Figure 1, SUP = 8V, VGON1 = VGON2 = 30, VGOFF = -10V, VPOS = VNEG = 4V, OE = 0V, TA = -40°C to
+85°C.) (Note 4)
PARAMETER
HIGH-VOLTAGE SCAN DRIVER
GON1 Input-Voltage Range
GON2 Input-Voltage Range
GOFF Input-Voltage Range
GOFF Supply Current
GON1 Supply Current
GON2 Supply Current
Output-Voltage Low (Y1–Y8)
CONDITIONS
A1–A8 = AGND, no load
A1–A8 = AGND, no load
A1–A8 = AGND, no load
IOUT =10mA
Output-Voltage High (Y1–Y6)
IOUT =10mA
Output-Voltage High (Y7–Y8)
CONTROL INPUTS
IOUT =10mA
MIN TYP MAX UNITS
12
12
-10
VGON1
-1
VGON2
-1
30
30
-5
125
60
20
VGOFF
+1
V
V
V
µA
µA
µA
V
V
V
Logic Input-Voltage Threshold
Rising (A1–A8)
1.2 2.0 V
Logic Input-Voltage Threshold
Falling (A1–A8)
0.67 1.12 V
Logic Input Bias Current (A1–A8) VA1–A8 = 18V
55 µA
Note 1: Inhibits boost switching if SUP exceeds the overvoltage threshold. Switching resumes when SUP drops below the threshold.
Note 2: Boost switching is not enabled until SUP is above undervoltage threshold.
Note 3: Guaranteed by design, not production tested.
Note 4: -40°C specifications are guaranteed by design, not production tested.
_______________________________________________________________________________________ 5
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Internal-Switch Boost Regulator with Integrated
High-Voltage Level Shifter and Op Amp
Table 2. Component Suppliers
SUPPLIER
PHONE
FAX
Fairchild
408-822-2000
408-822-2102
Sumida
847-545-6700
847-545-6720
TDK
847-803-6100
847-390-4405
Toshiba
949-455-2000
949-859-3963
Note: Indicate that you are using the MAX17010 when contacting these component suppliers.
WEBSITE
www.fairchildsemi.com
www.sumida.com
www.component.tdk.com
www.toshiba.com/taec
VIN L D
IN
VL LINEAR
REGULATOR
AND BOOTSTRAP
Y1–Y6
GON1
SHDN
LX
STEP-UP
REGULATOR
CONTROLLER
PGND
FB
COMP
AGND
VMAIN
A1–A6
GON2
A7, A8
GOFF
Y7, Y8
MAX17010
SUP
NEG
-
+ VCOM
POS
BGND
TO VCOM
BACKPLANE
Figure 2. MAX17010 Functional Diagram
Detailed Description
The MAX17010 contains a high-performance step-up
switching regulator, a high-speed op amp, and a high-
voltage, level-shifting scan driver optimized for active-
matrix TFT LCDs. Figure 2 shows the MAX17010
functional diagram.
Step-Up Regulator
The step-up regulator employs a current-mode, fixed-fre-
quency PWM architecture to maximize loop bandwidth
and provide fast transient response to pulsed loads
found in source drivers of TFT LCD panels. The high
switching frequency (1.2MHz) allows the use of low-pro-
file inductors and ceramic capacitors to minimize the
thickness of LCD panel designs. The integrated high-effi-
ciency MOSFET and the IC’s built-in digital soft-start
functions reduce the number of external components
required while controlling inrush current. The output volt-
age can be set from 5V to 18V with an external resistive
voltage-divider.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet MAX17010.PDF ] | |
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