MAX1697 Maxim, MAX1697 Datasheet - Page 6

• Manufacturer Part Number: MAX1697
• Description: 60mA / SOT23 Inverting Charge Pump with Shutdown
• Manufacturer: Maxim

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