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MAX188 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX188
Description  Triple-Output TFT LCD Power Supply with Fault Protection
PDF  32 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX188 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Triple-Output TFT LCD Power Supply
with Fault Protection
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(VIN = 3V, SHDN = IN, CREF = 0.22µF, PGND = GND, TA = -40°C to +85°C.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
IN Supply Range
VIN
2.7
5.5
V
VIN rising
2.55
2.85
IN ULVO Threshold
VUVLO
VIN falling
2.2
2.5
V
IN Quiescent Current
IIN
VFB = VFBP = 1.5V, VFBN = 0V (Note 1)
1.0
mA
IN Shutdown Current
V SHDN = 0, VIN = 5V
1.0
µA
REF Output Voltage
VREF
-2µA < IREF < 50µA
1.231
1.269
V
MAIN STEP-UP REGULATOR
Main Output Voltage Range
VMAIN
VIN
13
V
Operating Frequency
fOSC
VFREQ = VIN
0.75
1.25
MHz
Oscillator Maximum Duty Cycle
78
92
%
FB Regulation Voltage
VFB
ILX = 200mA, slope = 0 (Note 2)
1.215
1.260
V
FB Fault Trip Level
VFB falling
0.96
1.04
V
Line Regulation
VIN = 2.7V to 5.5V
0.45
%/V
FB Input Bias Current
IFB
VFB = 1.5V
-100
+100
nA
LX Switch On-Resistance
RLX(ON)
450
m
Ω
LX Current Limit
ILIM
1.6
2.8
A
POSITIVE LINEAR-REGULATOR CONTROLLER
FBP Regulation Voltage
VFBP
IDRVP = 0.2mA
1.213
1.288
V
FBP Fault Trip Level
VFBP falling
0.96
1.04
V
FBP Input Bias Current
IFBP
VFBP = 1.25V
-50
+50
nA
FBP Effective Transconductance
VDRVP = 10V, IDRVP = 0.1mA to 2mA
60
mS
Bandwidth
(Note 2)
200
kHz
DRVP Sink Current
IDRVP
VFBP = 1.1V, VDRVP = 10V
5
mA
NEGATIVE LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage
VFBN
IDRVN = 0.2mA
95
155
mV
FBN Fault Trip Level
VFBN rising
325
475
mV
FBN Input Bias Current
IFBN
VFBN = 0V
-50
+50
nA
FBN Effective Transconductance
VDRVN = -10V, IDRVN = 0.1mA to 2mA
60
mS
Bandwidth
(Note 2)
200
kHz
DRVN Sink Current
IDRVN
VFBN = 200mV, VDRVN = -10V
5
mA
LOGIC SIGNAL (SHDN)
Input Low Voltage
100mV typical hysteresis
0.4
V
Input High Voltage
1.6
V
Input Current
ISHDN
1µA



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