MAX1882 データシートの表示（PDF） - Maxim Integrated
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MAX1882 Datasheet PDF : 38 Pages
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Quad-Output TFT LCD DC-DC
Converters with Buffer
ELECTRICAL CHARACTERISTICS
(VIN = +3.0V, SHDN = IN, VSUPP = VSUPN = VSUPB = VSUPL = 10V, LDOOUT = FBL, BUF- = BUFOUT, BUF+ = FLTSET = TGND =
PGND = GND, CREF = 0.22µF, CBUF = 1µF, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
Input Supply Range
Input Undervoltage
Threshold
SYMBOL
VIN
CONDITIONS
VUVLO VIN Rising, 40mV hysteresis (typ)
IN Quiescent Supply
Current
SUPP Quiescent Current
VFB =
IIN
VFBP = 1.5V,
VFBN = -0.2V
ISUPP VFBP = 1.5V
MAX1778/MAX1880/
MAX1883 (fOSC = 1MHz)
MAX1881/MAX1882/MAX1884/
MAX1885 (fOSC = 500kHz)
MAX1778/MAX1880
(fOSC = 1MHz)
MAX1881/MAX1882
(fOSC = 500kHz)
SUPN Quiescent Current
IN Shutdown Current
SUPP Shutdown Current
ISUPN
VFBN = -0.2V
MAX1778/MAX1880
(fOSC = 1MHz)
MAX1881/MAX1882
(fOSC = 500kHz)
VSHDN = 0, VIN = 5V
VSHDN = 0, VSUPP = 13V,
MAX1778/MAX1880/MAX1881/MAX1882
SUPN Shutdown Current
VSHDN = 0, VSUPN = 13V,
MAX1778/MAX1880/MAX1881/MAX1882
SUPL Shutdown Current
SUPB Shutdown Current
MAIN STEP-UP CONVERTER
Main Output Voltage Range
VMAIN
FB Regulation Voltage
VFB
FB Input Bias Current
Operating Frequency
IFB
FOSC
VSHDN = 0, VSUPL = 13V,
MAX1778/MAX1881/MAX1883/MAX1884
VSHDN = 0, VSUPB = 13V
Integrator enabled, CINTG = 1000pF
Integrator disabled (INTG = REF)
VFB = 1.25V, INTG = GND
MAX1778/MAX1880/MAX1883
MAX1881/MAX1882/MAX1884/MAX1885
Oscillator Maximum Duty
Cycle
LX Switch On-Resistance
LX Leakage Current
LX Current Limit
FB Fault Trip Level
RLX(ON)
ILX
ILIM
ILX = 100mA
VLX = 13V
Phase I = soft-start (1024/fOSC)
Phase IV = fully on (after 3072/fOSC)
Falling edge, FLTSET = GND
MIN
2.7
2.2
VIN
1.223
1.21
-50
0.75
375
79
0.275
1.1
1.07
MAX UNITS
5.5
V
2.6
V
1
mA
1
0.7
mA
0.5
0.7
mA
0.5
10
µA
10
µA
10
µA
10
µA
13
µA
13
1.269
1.29
+50
1.25
625
91
0.7
20
0.525
2.05
1.14
V
V
nA
MHz
kHz
%
Ω
µA
A
V
6 _______________________________________________________________________________________
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