MAX17014 Просмотр технического описания (PDF) - Maxim Integrated
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MAX17014 Datasheet PDF : 33 Pages
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Low-Cost Multiple-Output
Power Supply for LCD TVs
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VIN = VIN2 = 12V, AVDD = VOVIN = VSUP = 15V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless oth-
erwise noted.)
PARAMETER
REFERENCE
REF Output Voltage
REF Load Regulation
REF Sink Current
REF Undervoltage Lockout Threshold
STEP-DOWN REGULATOR
OUT Voltage in Fixed Mode
FB2 Voltage in Adjustable Mode
FB2 Adjustable-Mode Threshold
Voltage
Output Voltage Adjust Range
FB2 Fault Trip Level
FB2 Input Leakage Current
DC Load Regulation
DC Line Regulation
LX2-to-IN2 nMOS Switch
On-Resistance
CONDITIONS
No external load
0 < ILOAD < 50μA
In regulation
Rising edge; 20mV typical hysteresis
FB2 = GND, no load
(Note 2)
VOUT = 2.5V, no load
(Note 2)
Dual-mode comparator
0°C < TA < +85°C
TA = +25°C
0°C < TA < +85°C
TA = +25°C
Step-down output
Falling edge
VFB2 = 1.5V
0A < ILOAD < 2A
No load, 10.8V < VIN2 < 13.2V
MIN TYP MAX UNITS
1.235 1.250 1.265
V
10
mV
10
μA
1.0
1.2
V
3.25 3.30 3.35
V
3.267
3.333
1.23 1.25 1.27
V
1.2375
1.2625
0.10 0.15 0.20
V
1.5
5.0
V
0.96 1.00 1.04
V
50
125 200
nA
0.5
%
0.1
%/V
120 240
m
LX2-to-CPGND nMOS Switch
On-Resistance
6
10
23
BST-to-VL PMOS Switch
On-Resistance
Low-Frequency Operation
OUT Threshold
Low-Frequency Operation
Switching Frequency
LX2 Positive Current Limit
Soft-Start Period
Soft-Start Step Size
Maximum Duty Factor
STEP-UP REGULATOR
Output Voltage Range
Oscillator Maximum Duty Cycle
Minimum tON
FB1 Regulation Voltage
FB1 Fault Trip Level
Step-down only
FSEL = VIN
FSEL = GND
FB1 = COMP,
CCOMP = 1nF
Falling edge
0°C < TA < +85°C
TA = +25°C
7
12
20
0.8
V
217
kHz
108
2.50
3
3.50
A
3
ms
VREF /
V
128
70
80
90
%
VVIN
20
V
69
75
81
%
70
ns
1.235 1.25 1.265
V
1.2375
1.2625
0.96 1.00 1.04
V
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