MAX1697(1999) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1697 Datasheet PDF : 12 Pages
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60mA, SOT23 Inverting Charge Pump
with Shutdown
Typical Operating Characteristics (continued)
(Circuit of Figure 1, capacitors from Table 2, VIN = +5V, SHDN = IN, TA = +25°C, unless otherwise noted.)
START-UP FROM SHUTDOWN
MAX1697 TOC19
0V
MAX1697S
(35kHz)
VOUT, 2V/div
0V
MAX1697R
(12kHz)
VOUT, 2V/div
SHDN
START-UP FROM SHUTDOWN
MAX1697 TOC20
0V
MAX1697U
(250kHz)
VOUT, 2V/div
0V
MAX1697T
(125kHz)
VOUT, 2V/div
SHDN
MAX1697R
OUTPUT CURRENT
vs. CAPACITANCE
70
VIN = +4.75V, VOUT = -4.0V
60
50
VIN = +3.15V, VOUT = -2.5V
40
30
VIN = +1.9V, VOUT = -1.5V
20
10
400µs/div
50µs/div
0
0 5 10 15 20 25 30 35 40 45 50
CAPACITANCE (µF)
MAX1697S
MAX1697T
OUTPUT CURRENT
OUTPUT CURRENT
vs. CAPACITANCE
vs. CAPACITANCE
80
70
VIN = +4.75V, VOUT = -4.0V
VIN = +4.75V, VOUT = -4.0V
70
60
MAX1697U
OUTPUT CURRENT
vs. CAPACITANCE
80
70
VIN = +4.75V, VOUT = -4.0V
60
VIN = +3.15V, VOUT = -2.5V
50
VIN = +3.15V, VOUT = -2.5V
50
40
40
30
VIN = +1.9V, VOUT = -1.5V
30
VIN = +1.9V, VOUT = -1.5V
20
20
10
10
60
50
VIN = +3.15V, VOUT = -2.5V
40
30
VIN = +1.9V, VOUT = -1.5V
20
10
0
0 5 10 15 20 25 30 35 40 45
CAPACITANCE (µF)
0
0 1 2 3 4 5 6 7 8 9 10
CAPACITANCE (µF)
0
0 1 2 3 4 5 6 7 8 9 10
CAPACITANCE (µF)
MAX1697R
OUTPUT RIPPLE vs. CAPACITANCE
500
MAX1697S
OUTPUT RIPPLE vs. CAPACITANCE
500
450
450
400
400
350
350
300
VIN = +4.75V, VOUT = -4.0V
250
200
VIN = +3.15V, VOUT = -2.5V
150
VIN = +1.9V, VOUT = -1.5V
100
300
250
200
VIN = +4.75V, VOUT = -4.0V
150
VIN = +3.15V, VOUT = -2.5V
100
VIN = +1.9V, VOUT = -1.5V
50
50
0
0 5 10 15 20 25 30 35 40 45 50
CAPACITANCE (µF)
0
0 5 10 15 20 25 30 35 40 45 50
CAPACITANCE (µF)
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