MAX679C/D Ver la hoja de datos (PDF) - Maxim Integrated
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MAX679C/D Datasheet PDF : 6 Pages
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Regulated 3.3V Charge Pump
__________________________________________Typical Operating Characteristics
(Typical Operating Circuit with: VIN = V SHDN = 2V, CIN = 4.7µF, C1 = 0.33µF, COUT = 10µF, tested in-circuit, TA = +25°C, unless
otherwise noted.)
EFFICIENCY
vs. OUTPUT CURRENT
100
90 VIN = 1.8V
80
70
60
50
40
30
20
10
0
0.01
VIN = 2.0V
VIN = 2.4V
VIN = 3.0V
VIN = 3.5V
FSET = IN (1MHz)
0.1
1
10
100
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
3.4
FSET = IN (1MHz)
VIN = 3.5V
3.3
VIN = 3.0V
3.2
VIN = 2.4V
3.1
VIN = 1.8V VIN = 2.0V
3.0
DASHED LINES INDICATE
OUTPUT OUT OF REGULATION
2.9
0 10 20 30 40 50 60 70 80 90 100
OUTPUT CURRENT (mA)
100
90
80
70
60
50
40
30
20
10
0
0.01
EFFICIENCY
vs. OUTPUT CURRENT
VIN = 1.8V
VIN = 2.0V
VIN = 2.4V
VIN = 3.0V
VIN = 3.5V
FSET = GND (330kHz)
0.1
1
10
100
OUTPUT CURRENT (mA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
100
SHDN = IN
10
1
SHDN = GND
0.1
1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE
vs. OUTPUT CURRENT
3.6
FSET = GND (330kHz)
3.5
3.4
VIN = 3.5V
VIN = 3.0V
3.3
3.2
VIN = 2.4V
3.1
VIN = 2.0V
3.0
VIN = 1.8V
2.9 DASHED LINES INDICATE
OUTPUT OUT OF REGULATION
2.8
0 10 20 30 40 50 60 70 80
OUTPUT CURRENT (mA)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
600
VIN = 2.4V
500
400
300
200
100
0
-40 -15 10
35
60
85
TEMPERATURE (°C)
PUMP FREQUENCY
vs. TEMPERATURE
360
FSET = GND (330kHz)
350 VIN = 2.5V
340
330
320
310
300
-40 -15 10
35
60
85
TEMPERATURE (°C)
PUMP FREQUENCY
vs. TEMPERATURE
1100
1080 FSET = IN (1MHz)
VIN = 2.5V
1060
1040
1020
1000
980
960
940
920
900
-40 -15 10
35
60
85
TEMPERATURE (°C)
OUTPUT RIPPLE (2mA LOAD)
FSET = GND (330kHz)
VOUT
50mV/div
AC COUPLED
100µs/div
_______________________________________________________________________________________ 3
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