MAX1748-MAX8726 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1748-MAX8726 Datasheet PDF : 16 Pages
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Triple-Output TFT-LCD
DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
IN, SHDN, TGND to GND .........................................-0.3V to +6V
DRVN to GND .........................................-0.3V to (VSUPN + 0.3V)
DRVP to GND..........................................-0.3V to (VSUPP + 0.3V)
PGND to GND.....................................................................±0.3V
RDY to GND ...........................................................-0.3V to +14V
LX, SUPP, SUPN to PGND .....................................-0.3V to +14V
INTG, REF, FB, FBN, FBP to GND ...............-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (TA = +70°C)
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ..........755mW
Operating Temperature Range
MAX1748EUE/MAX8726EUE..........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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
(VIN = +3.0V, SHDN = IN, VSUPP = VSUPN = 10V, TGND = PGND = GND, CREF = 0.22µF, CINTG = 470pF, TA = 0°C to +85°C, unless
otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Supply Range
Input Undervoltage Threshold
IN Quiescent Supply Current
SUPP Quiescent Current
SUPN Quiescent Current
IN Shutdown Current
SUPP Shutdown Current
SUPN Shutdown Current
MAIN BOOST CONVERTER
Output Voltage Range
FB Regulation Voltage
FB Input Bias Current
Operating Frequency
Oscillator Maximum Duty Cycle
Load Regulation
Line Regulation
Integrator Gm
LX Switch On-Resistance
LX Leakage Current
LX Current Limit
Maximum RMS LX Current
SYMBOL
VIN
VUVLO
IIN
ISUPP
ISUPN
VMAIN
VFB
IFB
fOSC
RLX(ON)
ILX
ILX(MAX)
CONDITIONS
VIN rising, 40mV hysteresis (typ)
VFB = VFBP = 1.5V, VFBN = -0.2V
VFBP = 1.5V
VFBN = -0.1V
V SHDN = 0, VIN = 5V
V SHDN = 0, VSUPP = 13V
V SHDN = 0, VSUPN = 13V
TA = 0°C to +85°C
VFB = 1.25V, INTG = GND
IMAIN = 0 to 200mA, VMAIN = 10V
ILX = 100mA
VLX = 13V
Phase I = soft-start (1.0ms)
Phase II = soft-start (1.0ms)
Phase III = soft-start (1.0ms)
Phase IV = fully on (after 3.0ms)
MIN TYP MAX UNITS
2.7
5.5
V
2.2
2.4
2.6
V
0.6
1
mA
0.4
0.8
mA
0.4
0.8
mA
0.1
10
µA
0.1
10
µA
0.1
10
µA
VIN
1.235
-50
0.85
78
0.275
1.1
1.248
1
85
0.2
0.1
320
0.35
0.01
0.380
0.75
1.12
1.5
1
13
1.261
+50
1.15
90
0.7
20
0.500
2.0
V
V
nA
MHz
%
%
%/V
µmho
Ω
µA
A
A
Soft-Start Period
FB Fault Trip Level
POSITIVE CHARGE PUMP
VSUPP Input Supply Range
tSS
Power-up to the end of phase III
VSUPP
3072 /
fOSC
s
1.07
1.1
1.14
V
2.7
13.0
V
2 _______________________________________________________________________________________
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