MAX1747EUP 查看數據表（PDF） - Maxim Integrated
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MAX1747EUP Datasheet PDF : 13 Pages
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Triple Charge-Pump TFT LCD
DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VSUPM = +3.0V, VSUPP = VSUPM = +5V, TGND = PGND = GND, I SHDN = 22µA, COUT = 2 ✕ 4.7µF, CREF = 0.22µF, CINTG =
1500pF, VOUT = +5V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
REFERENCE
Reference Voltage
Reference Undervoltage
Threshold
LOGIC SIGNALS
SHDN Input Low Voltage
SHDN Bias Voltage
SHDN Input Current Range
RDY Output Low Voltage
RDY Output High Leakage
SYMBOL
CONDITIONS
VREF
-2µA < IREF < 50µA
VREF rising
I SHDN
I SHDN = 22µA
For 200kHz to 2MHz operation
ISINK = 2mA
V RDY = 13V
Note 1: Specifications from 0°C to -40°C are guaranteed by design, not production tested.
MIN
1.222
0.95
580
3
MAX UNITS
1.269
V
1.18
V
0.4
V
900
mV
65
µA
0.5
V
1
µA
Typical Operating Characteristics
(Circuit of Figure 1, VIN = VSUPM = +3.3V, TA = +25°C, unless otherwise noted.)
MAIN OUTPUT EFFICIENCY
vs. LOAD CURRENT
(MAIN CHARGE PUMP ONLY)
5.03
5.02
VIN = 3.3V
5.01
5.00
VIN = 2.8V
VIN = 4.0V
4.99
4.98
4.97
0
100
200
300
400
IOUT (mA)
MAIN OUTPUT EFFICIENCY
vs. LOAD CURRENT
(MAIN CHARGE PUMP ONLY)
100
VOUT = 5V
90
VIN = 2.8V
80
VIN = 3.3V
70
VIN = 4.0V
60
50
40
0
100
200
300
400
IOUT (mA)
MAIN OUTPUT EFFICIENCY
vs. LOAD CURRENT
(MAIN CHARGE PUMP ONLY)
100
VOUT = 5V
90
VNEG = -7V WITH INEG = 10mA
VIN = 2.8V VPOS = 12V WITH IPOS = 5mA
80
70
VIN = 3.3V
60
VIN = 4.0V
50
40
0
100
200
300
400
IOUT (mA)
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