Datasheet

MAX17113
Low-Cost, Multiple-Output
Power Supply for LCD TVs
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
VIN
= V
IN2
= 12V, T
A
= 0°C to +85°C. Typical values are at T
A
= +25°C, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
FAULT DETECTION
Duration to Trigger Fault 45 55 65 ms
Duration to Restart After Fault 240 ms
Number of Restart Attempts
Before Shutdown
3 Times
Thermal-Shutdown Threshold 15°C typical hysteresis +160 °C
SWITCHING FREQUENCY SELECTION
FSEL Input Low Voltage 450kHz 0.6 V
FSEL Input High Voltage 600kHz 1.6 V
FSEL Pulldown Resistance 1 M
ELECTRICAL CHARACTERISTICS
(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
GENERAL
VIN + IN2 Input-Voltage Range 8.5 16.5 V
VIN + IN2 Shutdown Current EN1 = EN2 = AGND (shutdown) 600 μA
SWO Shutdown Current EN1 = EN2 = AGND (shutdown) 2 μA
FSEL = VIN 510 690
SMPS Operating Frequency
FSEL = AGND 390 510
kHz
VIN Undervoltage-Lockout Threshold VIN rising edge, 100mV typical hysteresis 5.75 7.25 V
VL REGULATOR
VL Output Voltage
I
VL
= 25mA, V
FB1
= V
FB2
= V
FBP
= 1.1V,
V
FBN
= 0.4V (all regulators switching)
4.9 5.15 V
VL Undervoltage-Lockout Threshold VL rising edge, 100mV typical hysteresis 3.6 4.5 V
REFERENCE
REF Output Voltage No external load 1.235 1.265 V
REF Load Regulation 0 < I
LOAD
< 50μA 10 mV
RE F U nd er vol tag e- Lockout Thr eshol d Rising edge; 25mV typical hysteresis 1.2 V
STEP-DOWN REGULATOR
OUT Voltage in Fixed Mode FB2 = GND, no load (Note 1) 3.25 3.35 V
FB2 Voltage in Adjustable Mode V
OUT
= 2.5V, no load (Note 1) 1.23 1.27 V
FB2 Adjustable-Mode
Threshold Voltage
Dual-mode comparator 0.10 0.20 V
Output-Voltage Adjust Range Step-down output 1.5 5.0 V