Rainbow Electronics MAX1697 - Manual (Page 6)

MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, capacitors from Table 2, V IN = +5V, SHDN = IN, T A = +25°C, unless otherwise noted.)
0V
SHDN
0V
MAX1697S
(35kHz)
V
OUT
, 2V/div
MAX1697R
(12kHz)
V
OUT , 2V/div
START-UP FROM SHUTDOWN
MAX1697 TOC19
400 µs/div
0V
0V
MAX1697U
(250kHz)
V
OUT , 2V/div
MAX1697T
(125kHz)
V
OUT , 2V/div
START-UP FROM SHUTDOWN
MAX1697 TOC20
50 µs/div
SHDN
0
20
10
40
30
60
50
70
0 10 15 20 5 25 30 35 45 40 50
MAX1697R
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC21
CAPACITANCE ( µF)
OUTPUT CURRENT (mA)
V IN = +4.75V, V OUT = -4.0V
V IN = +1.9V, V OUT = -1.5V
V IN = +3.15V, V OUT = -2.5V
0
20
10
40
30
60
50
70
80
0 10 15 20 5 25 30 35 40 45
MAX1697S
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC22
CAPACITANCE ( µF)
OUTPUT CURRENT (mA)
V IN = +1.9V, V OUT = -1.5V
V IN = +3.15V, V OUT = -2.5V
V IN = +4.75V, V OUT = -4.0V
0
100
50
200
150
300
250
350
450
400
500
0 10 15 20 5 25 30 35 45 40 50
MAX1697R
OUTPUT RIPPLE vs. CAPACITANCE
MAX1697 TOC25
CAPACITANCE ( µF)
OUTPUT RIPPLE (mV) V IN = +1.9V, V OUT = -1.5V
V IN = +3.15V, V OUT = -2.5V
V IN = +4.75V, V OUT = -4.0V
0
20
10
40
30
60
50
70
0 2 3 4 1 5 6 7 9 8 10
MAX1697T
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC23
CAPACITANCE ( µF)
OUTPUT CURRENT (mA)
V IN = +3.15V, V OUT = -2.5V
V IN = +4.75V, V OUT = -4.0V
V IN = +1.9V, V OUT = -1.5V
0
20
10
40
30
60
50
70
80
0 2 3 4 1 5 6 7 9 8 10
MAX1697U
OUTPUT CURRENT
vs. CAPACITANCE
MAX1697 TOC24
CAPACITANCE ( µF)
OUTPUT CURRENT (mA)
V IN = +1.9V, V OUT = -1.5V
V IN = +3.15V, V OUT = -2.5V
V IN = +4.75V, V OUT = -4.0V
0
100
50
200
150
300
250
350
450
400
500
0 10 15 20 5 25 30 35 45 40 50
MAX1697S
OUTPUT RIPPLE vs. CAPACITANCE
MAX1697 TOC26
CAPACITANCE ( µF)
OUTPUT RIPPLE (mV)
V IN = +1.9V, V OUT = -1.5V
V IN = +3.15V, V OUT = -2.5V
V IN = +4.75V, V OUT = -4.0V