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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17113 Datasheet

Multiple-Output Power Supply

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19-4709; Rev 0; 8/09
EVAALVUAAILTAIOBNLEKIT
Low-Cost, Multiple-Output
Power Supply for LCD TVs
General Description
The MAX17113 multiple-output power-supply controller
generates all the supply rails for thin-film transistor
(TFT) liquid-crystal display (LCD) panels in TVs and
monitors operating from a regulated 12V input. It
includes a step-down and a step-up regulator, a posi-
tive and a negative charge pump, a Dual Mode™ logic-
controlled high-voltage switch control block, and an
adjustable-timing power-good output. The MAX17113
can operate from 8V to 16.5V input voltages and is opti-
mized for LCD TV panel and LCD monitor applications
running directly from 12V supplies.
The step-up and step-down regulators feature internal
power MOSFETs and high-frequency operation allow-
ing the use of small inductors and capacitors, resulting
in a compact solution. Both switching regulators use
fixed-frequency current-mode control architectures,
providing fast load-transient response and easy com-
pensation. A current-limit function for internal switches
and output-fault shutdown protect the step-up and
step-down power supplies against fault conditions. The
MAX17113 provides soft-start functions to limit inrush
current during startup. The MAX17113 provides
adjustable power-up timing.
The positive and negative charge-pump regulators pro-
vide TFT gate-driver supply voltages. Both output volt-
ages can be adjusted with external resistive voltage-
dividers. The switch control block allows the manipula-
tion of the positive TFT gate-driver voltage.
A series p-channel MOSFET is integrated to sequence
power to AVDD after the MAX17113 has proceeded
through normal startup, and provides True Shutdown™.
The MAX17113 is available in a small (5mm x 5mm),
low-profile (0.8mm), 40-pin thin QFN package and
operates over a -40°C to +85°C temperature range.
LCD TV Panels
Applications
LCD Monitor Panels
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX17113ETL+
-40°C to +85°C
40 Thin QFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Simplified Operating Circuit appears at end of data sheet.
Dual Mode is a trademark of Maxim Integrated Products, Inc.
True Shutdown is a trademark of Maxim Integrated Products, Inc.
Features
o Optimized for 10.8V to 13.2V Input Supply
o 8V to 16.5V Input Supply Range
o Selectable Frequency (450kHz/600kHz)
o Current-Mode Step-Up Regulator
Built-In 24V, 3.3A, 80mΩ n-Channel MOSFET
High-Accuracy Output Voltage (1%)
True Shutdown
Fast Load-Transient Response
High Efficiency
10ms Internal Soft-Start
o Current-Mode Step-Down Regulator
Built-In 24V, 3A, 100mΩ n-Channel MOSFET
Fast Load-Transient Response
Adjustable Output Voltage Down to 1.5V
Skip Mode at Light Load (EN2 = AGND)
High Efficiency
3ms Internal Soft-Start
o Adjustable Positive and Negative Charge-Pump
Regulators
o Soft-Start and Timer-Delay Fault Latch for All
Outputs
o Logic-Controlled High-Voltage Integrated
Switches with Adjustable Delay
o 120mΩ p-Channel FET for AVDD Sequencing
o Input Undervoltage Lockout and Thermal-
Overload Protection
o 40-Pin, 5mm x 5mm Thin QFN Package
Pin Configuration
TOP VIEW
30 29 28 27 26 25 24 23 22 21
PGND 31
20 LX2
LX1 32
19 LX2
LX1 33
18 BST
SWI 34
17 FB2
SWO 35
FB1 36
MAX17113
16 DEL1
15 REF
COMP 37
14 FBN
PGOOD 38
13 AGND
CRST 39
12 DRVN
AGND 40
11 CTL
1 2 3 4 5 6 7 8 9 10
THIN QFN
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17113 Datasheet

Multiple-Output Power Supply

No Preview Available !

Low-Cost, Multiple-Output
Power Supply for LCD TVs
ABSOLUTE MAXIMUM RATINGS
VIN, IN2, EN1, EN2, FSEL to AGND.......................-0.3V to +24V
CPGND, GND2, PGND to AGND ........................................±0.3V
MODE, DLP, CTL, THR, DEL1, DEL2, VL,
PGOOD to AGND .............................................-0.3V to +7.5V
REF, FBP, FBN, FB1, FB2, COMP, OUT,
CRST to AGND .......................................-0.3V to (VVL + 0.3V)
LX1, SWI, SWO to AGND .......................................-0.3V to +24V
SWI to SWO ............................................................-0.3V to +24V
DRVN to AGND ..........................................-0.3V to (VIN2 + 0.3V)
DRVP to AGND ........................................-0.3V to (VSWO + 0.3V)
LX2 to GND2 ..............................................-0.3V to (VIN2 + 0.3V)
BST to VL................................................................-0.3V to +24V
SRC to AGND .........................................................-0.3V to +48V
GON, DRN to AGND.................................-0.3V to (VSRC + 0.3V)
SRC to DRN............................................................-0.3V to +40V
DRN to AGND.........................................................-0.3V to +40V
GON to DRN...........................................................-0.3V to +48V
REF Short Circuit to AGND.........................................Continuous
RMS LX1 Current (total for both pins) ...................................3.2A
RMS PGND Current (total for both pins) ...............................3.2A
RMS IN2 Current (total for both pins)....................................3.2A
RMS LX2 Current (total for both pins) ...................................3.2A
RMS GND2, CPGND Current................................................0.8A
RMS SWI Current ..................................................................2.4A
RMS SWO Current ................................................................2.4A
RMS DRVN, DRVP Current ...................................................0.8A
RMS VL Current ..................................................................50mA
Continuous Power Dissipation (TA = +70°C)
40-Pin Thin QFN
(derate 35.7mW/°C above +70°C) .........................2857.1mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+160°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s)....................................+300°
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, VVIN = VIN2 = 12V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
GENERAL
VIN, IN2 Input Voltage Range
8.5 16.5 V
VIN + IN2 Quiescent Current
Only LX2 switching (VFB1 = VFBP = 1.5V, VFBN = 0V);
EN1 = EN2 = VL, VFSEL= 0V
10
mA
VIN + IN2 Standby Current
VIN + IN2 Shutdown Current
LX2 not switching (VFB1 = VFB2 = VFBP = 1.5V,
VFBN = 0V); EN1 = EN2 = VL, VFSEL= 0V
EN1 = EN2 = AGND (shutdown)
3
300 600
mA
μA
SWO Shutdown Current
EN1 = EN2 = AGND (shutdown)
0.25
2
μA
SMPS Operating Frequency
FSEL = VIN
FSEL = AGND
510 600 690
kHz
390 450 510
Phase Difference Between Step-
Down/Positive and Step-Up/Negative
Regulators
180 Degrees
VIN Undervoltage Lockout Threshold VIN rising edge, 100mV typical hysteresis
6.0 7.0 8.3
V
VL REGULATOR
VL Output Voltage
IVL = 25mA, VFB1 = VFB2 = VFBP = 1.1V, VFBN = 0.4V
(all regulators switching)
4.9
5.0 5.15
V
VL Undervoltage Lockout Threshold VL rising edge, 100mV typical hysteresis
3.6 4.0 4.5
V
2 _______________________________________________________________________________________


Part Number MAX17113
Description Multiple-Output Power Supply
Maker Maxim Integrated
Total Page 30 Pages
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