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MAX17010ETL+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
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
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
MAX17010
Internal-Switch Boost Regulator with Integrated
High-Voltage Level Shifter and Op Amp
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
MAX17010
SHDN
IN
AGND
FB
PGND
SUP
POS
VL
GON1
GON2
TO VCOM
BACKPLANE
NEG
BGND
VCOM
A1
COMP
Y1
A2 Y2
A3 Y3
A4 Y4
A5 Y5
A6 Y6
A7 Y7
A8 Y8
LX
V
MAIN
V
IN
EP
Minimal Operating Circuit
19-0709; Rev 0; 3/07
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.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX17010ETL+
-40°C to +85°C
40 Thin QFN-EP*
(5mm x 5mm)
+
Denotes a lead-free package.
*
EP = Exposed paddle.
Pin Configuration appears at end of data sheet.
MAX17010
Internal-Switch Boost Regulator with Integrated
High-Voltage Level Shifter and Op Amp
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
SHDN
= +3V, Circuit of Figure 1, SUP = 8.5V, V
GON1
= V
GON2
= 30V, V
GOFF
= -10V, V
POS
= V
NEG
= 4V, T
A
= 0°C to +85°C.
Typical values are at T
A
= +25°C, unless otherwise noted.)
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.
IN, SHDN to GND ..................................................-0.3V to +7.5V
VL to AGND ...........................................................-0.3V to +6.0V
COMP, FB to GND ........................................-0.3V to (VL + 0.3V)
VCOM, NEG, POS to BGND .....................-0.3V to (V
SUP
+ 0.3V)
LX to GND ..............................................................-0.3V to +20V
SUP to GND............................................................-0.3V to +20V
A_ to AGND ............................................................-0.3V to +20V
A_ Input Current..................................................................20mA
PGND, BGND to AGND.........................................-0.3V to +0.3V
GON1, GON2 to AGND..........................................-0.3V to +32V
GOFF to AGND......................................................-12V to + 0.3V
Y1–Y6 to AGND.......................(V
GOFF
- 0.3V) to (V
GON1
+ 0.3V)
Y7, Y8 to AGND.......................(V
GOFF
- 0.3V) to (V
GON2
+ 0.3V)
LX, PGND RMS Current Rating.............................................2.4A
Continuous Power Dissipation (T
A
= +70°C) NiPd Lead Frame
with Nonconductive Epoxy
40-Pin, 5mm x 5mm, Thin QFN (derate 35.7mW/°C above
+70°C)........................................................................2857mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
IN Input-Voltage Range 1.8 5.5 V
IN Quiescent Current V
IN
= 3V, V
FB
= 1.5V, not switching 0.05 0.10 mA
IN Undervoltage Lockout
IN rising; typical hysteresis 100mV; LX remains off below
this level
1.30 1.75 V
Thermal Shutdown Rising edge, 15
o
C hysteresis 160
o
C
BOOTSTRAP LINEAR REGULATOR (VL)
VL Output Voltage 3.8 4.0 4.2 V
VL Undervoltage Lockout VL rising, 200mV hysteresis (typ) 2.4 2.7 3.0 V
VL Maximum Output Current V
FB
= 1V 10 mA
MAIN DC-DC CONVERTER
V
FB
= 1.5V, no load 1.5 2.5
SUP Supply Current
V
FB
= 1.1V, no load 3.5 4.5
mA
Operating Frequency 990 1170 1350 kHz
Oscillator Maximum Duty Cycle 88 92 96 %
FB Regulation Voltage FB = COMP 1.222 1.235 1.248 V
FB Load Regulation 0 < I
MAIN
< 200mA, transient only -1 %
FB Line Regulation V
IN
= 1.8V to 5.5V 0 %/V
FB Input Bias Current V
FB
= 1.3V 50 125 200 nA
FB Transconductance ΔI = 5µA at COMP 75 160 280 µS
FB Voltage Gain FB to COMP 2400 V/V
FB Fault-Timer Trip Threshold Falling edge 0.96 1.00 1.04 V
FB U nd er vol tag e S w i tchi ng Inhi b i t 50 100 150 mV
LX On-Resistance I
LX
= 200mA 200 330 mΩ
LX Leakage Current V
LX
= 13V 0.01 20 µA
LX Current Limit 65% duty cycle 1.6 1.9 2.2 A
Current-Sense Transresistance 0.25 0.42 0.55 V/A
Soft-Start Period 3ms
MAX17010
Internal-Switch Boost Regulator with Integrated
High-Voltage Level Shifter and Op Amp
_______________________________________________________________________________________ 3
PARAMETER CONDITIONS MIN TYP MAX UNITS
CONTROL INPUTS
SHDN Input-Low Voltage 0.6 V
1.8V ≤ V
IN
≤ 3.0V 1.8
SHDN Input-High Voltage
3.0V ≤ V
IN
≤ 5.5V 2.0
V
Maximum SHDN Input Current -1 +1 µA
OP AMP
SUP Supply Range 518V
SUP Overvoltage Threshold (Note 1) 18.1 19.0 19.9 V
SUP Undervoltage Threshold (Note 2) 1.4 V
Input Offset Voltage V
NEG
, V
POS
= V
SUP
/ 2 12 mV
Input Bias Current V
NEG
, V
POS
= V
SUP
/ 2 -50 +50 nA
Input Common-Mode Voltage
Range
0V
SUP
V
V C O M Outp ut- V ol tag e S w i ng H i g hI
VCOM
= 5mA
V
SUP
- 100
V
SUP
- 50
mV
VCOM Output-Voltage Swing Low I
VCOM
= -5mA 50 100 mV
VCOM Output Current High V
VCOM
= V
SUP
- 1V +75 mA
VCOM Output Current Low V
VCOM
= 1V -75 mA
Slew Rate 40 V/µs
-3dB Bandwidth 20 MHz
Short to V
SUP
/ 2, sourcing 50 150
VCOM Short-Circuit Current
Short to V
SUP
/ 2, sinking 50 150
mA
HIGH-VOLTAGE SCAN DRIVER
GON1 Input-Voltage Range 12 30 V
GON2 Input-Voltage Range 12 30 V
GOFF Input-Voltage Range -10 -5 V
GOFF Supply Current A1–A8 = AGND, no load 75 125 µA
GON1 Supply Current A1–A8 = AGND, no load 30 60 µA
GON2 Supply Current A1–A8 = AGND, no load 10 20 µA
Output-Voltage Low (Y1–Y8) I
OUT
=10mA
V
GOFF
+ 0.3
V
GOFF
+ 1.0
V
Output-Voltage High (Y1–Y6) I
OUT
=10mA
V
GON1
- 1.0
V
GON1
- 0.3
V
Output-Voltage High (Y7–Y8) I
OUT
=10mA
V
GON2
- 1.0
V
GON2
- 0.3
V
Propagation Delay C
LOAD
= 100pF (Note 3) 40 80 ns
Rise Time (Y1–Y8) C
LOAD
= 100pF (Note 3) 16 35 ns
Fall Time (Y1–Y8) C
LOAD
= 100pF (Note 3) 16 35 ns
Maximum Operating Frequency C
LOAD
= 100pF (Note 3) 50 kHz
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
SHDN
= +3V, Circuit of Figure 1, SUP = 8.5V, V
GON1
= V
GON2
= 30V, V
GOFF
= -10V, V
POS
= V
NEG
= 4V, T
A
= 0°C to +85°C.
Typical values are at T
A
= +25°C, unless otherwise noted.)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX17010ETL+

Mfr. #:
Buy MAX17010ETL+
Manufacturer:
Maxim Integrated
Description:
LCD Drivers Internal-Switch Boost Regulator
Lifecycle:
New from this manufacturer.
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