MAX1889 データシートの表示（PDF） - Maxim Integrated
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MAX1889 Datasheet PDF : 32 Pages
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Triple-Output TFT LCD Power Supply
with Fault Protection
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3V, SHDN = IN, CREF = 0.22µF, PGND = GND, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
FBP Line Regulation
IDRVP = 0.2mA, VIN = 2.7V to 5.5V
Bandwidth
(Note 3)
DRVP Sink Current
IDRVP VFBP = 1.1V, VDRVP = 10V
DRVP Off-Leakage Current
VFBP = 1.1V, VDRVP = 28V
NEGATIVE LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage
VFBN IDRVN = 0.2mA
FBN Fault Trip Level
FBN Input Bias Current
IFBN
VFBN rising
VFBN = 0V
FBN Effective Transconductance
VDRVN = -10V, IDRVN = 0.1mA to 2mA
FBN Line Regulation
IDRVN = 0.2mA, VIN = 2.7V to 5.5V
Bandwidth
(Note 2)
DRVN Sink Current
IDRVN VFBN = 200mV, VDRVN = -10V
DRVN Off-Leakage Current
LOGIC SIGNAL (SHDN)
VFBP = -0.1V, VDRVN = -20V
Input Low Voltage
Input High Voltage
100mV typical hysteresis, VIN = 2.7V to 5.5V
VIN = 2.7V to 5.5V
Input Current
I SHDN
LOGIC SIGNAL (FREQ)
Input Low Voltage
0.15 x VIN typical hysteresis
Input High Voltage
Input Current
IFREQ
OVERCURRENT COMPARATOR
Input Offset Voltage
Input Bias Current
IOCN,
IOCP
OCN, OCP Input
Common-Mode Range
FAULT TIMER AND GATE DRIVER
Fault Timer Period
tFAULT
GATE Output Sink Current
During Slew
GATE Output
Pulldown Resistance
GATE Output Pullup Resistance
IGATE
VOCN = VOCP = VIN
VFREQ = 0V, 32768/fOSC
VFREQ = VIN, 65536/fOSC
VGATE = 1.5V, during turn-on transition
VGATE < 0.5V
MIN
200
5
95
325
-50
75
200
5
1.6
0.7 x
VIN
-5
-50
1.5
6
TYP
1
0.1
125
400
1
0.1
0.01
0.01
64
64
12
MAX
10
155
475
+50
10
0.4
1
0.3 x
VIN
1
+5
+50
0.8 x
VIN
18
200
200
UNITS
mV
kHz
mA
µA
mV
mV
nA
mS
mV
kHz
mA
µA
V
V
µA
V
V
µA
mV
nA
V
ms
µA
Ω
Ω
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