Datasheet

MAX17113
Low-Cost, Multiple-Output
Power Supply for LCD TVs
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ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
VIN
= V
IN2
= 12V, T
A
= -40°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
LX2-to-IN2 nMOS Switch
On-Resistance
200 mΩ
LX2-to-CPGND nMOS Switch
On-Resistance
725Ω
BS T- to- V L p M O S S w i tch On- Resi stance 7 25 Ω
LX2 Positive Current Limit 2.50 3.50 A
Maximum Duty Factor 65 90 %
FB2 Power-Good Threshold FB2 rising 0.94 1.06 V
PGOOD Output Low Voltage I
PGOOD
= 1mA 0.3 V
CRST Charge Current V
CRST
= 1V 0.8 1.2 μA
CRST Voltage Threshold 1.2 1.3 V
CRST Pulldown Resistance V
CRST
= 1V 300 Ω
STEP-UP REGULATOR
Output-Voltage Range V
VIN
18 V
Oscillator Maximum Duty Cycle 65 90 %
FB1 Regulation Voltage FB1 = COMP, C
COMP
= 1nF 1.225 1.275 V
LX1 Current Limit V
FB1
= 1.1V, duty cycle = 25% 3.2 4.2 A
Current-Sense Transresistance 0.10 0.30 V/A
LX1 On-Resistance 200 mΩ
POSITIVE AND NEGATIVE CHARGE-PUMP REGULATORS
FBP Regulation Voltage 1.23 1.27 V
DRVP p-Channel MOSFET
On-Resistance
4 Ω
DRVP n-Channel MOSFET
On-Resistance
1.5 Ω
FBN Regulation Voltage V
REF
- V
FBN
0.985 1.015 V
DRVN p-Channel On-Resistance 3 Ω
DRVN n-Channel On-Resistance 1.5 Ω
AVDD SWITCH
SWI Supply Range 8.0 18.5 V
SWI Overvoltage Fault Threshold V
SWI
= rising, 300mV typical hysteresis (Note 3) 18.5 19.9 V
SWI-SWO Switch Resistance 360 mΩ
HIGH-VOLTAGE SWITCH ARRAY
SRC Supply Range 44 V
GON-to-SRC Switch On-Resistance V
DLP
= 2V, CTL = VL 20 Ω
GON-to-DRN Switch On-Resistance V
DLP
= 2V, CTL = AGND 50 Ω
GON-to-GND Switch On-Resistance DLP = AGND, V
GON
= 5V 2.5 10 kΩ
CTL Input Low Voltage 0.6 V
CTL Input High Voltage 1.6 V
Mode 1 Voltage Threshold V
MODE
rising edge 4.1 V