MAX1889 データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX1889 Datasheet PDF : 32 Pages
| |||
Triple-Output TFT LCD Power Supply
with Fault Protection
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3V, SHDN = IN, CREF = 0.22µF, PGND = GND, TA = -40°C to +85°C.) (Note 4)
PARAMETER
SYMBOL
LOGIC SIGNAL (FREQ)
Input Low Voltage
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
GATE Output Sink Current
GATE Output
Pulldown Resistance
IGATE
GATE Output Pullup Resistance
CONDITIONS
0.15 x VIN typical hysteresis
VOCN = VOCP = VIN
VGATE = 1.5V, during turn-on transition
VGATE < 0.5V
MIN TYP MAX UNITS
0.7 x VIN
0.3 x VIN V
V
1
µA
-5
+5
mV
-50
+50
nA
0.8 x
1.5
VIN
V
6
18
µA
200
Ω
200
Ω
Note 1: Quiescent current does not include switching losses.
Note 2: FB regulation voltage is tested with no slope compensation ramp. Slope compensation needs to be included when selecting
resisitors for setting the output voltage (see Main Step-Up Regulator and Output Voltage Selection sections).
Note 3: Guaranteed by design. Not production tested.
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(Circuit of Figure 1, VIN = +3.3V, VMAIN = +9V, VPL = +20V, VNL = -7V, SHDN = FREQ = IN, PGND = GND, TA = +25°C, unless
otherwise noted.)
STEP-UP REGULATOR EFFICENCY
vs. LOAD CURRENT (VMAIN = 9V)
100
STEP-UP REGULATOR OUTPUT VOLTAGE
vs. LOAD CURRENT (VMAIN = 9V)
9.1
STEP-UP REGULATOR EFFICIENCY
vs. LOAD CURRENT (VMAIN = 13V)
100
90
80
70
60
50
1
A
BC
A: VIN = 2.7V
B: VIN = 3.3V
C: VIN = 5.5V
10
100
1000
LOAD CURRENT (mA)
9.0
8.9
8.8
8.7
8.6
8.5
1
VIN = 2.7V
VIN = 3.3V
VIN = 5.5V
10
100
1000
LOAD CURRENT (mA)
90
80
70
60
50
1
AB
C
A: VIN = 2.7V
B: VIN = 3.3V
C: VIN = 5.5V
10
100
1000
LOAD CURRENT (mA)
_______________________________________________________________________________________ 5
Share Link: 