Chip information – Rainbow Electronics MAX1697 User Manual
Page 10
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MAX1697
60mA, SOT23 Inverting Charge Pump
with Shutdown
10
______________________________________________________________________________________
MAX1697
2
5
1
V
OUT
= (2V
IN
) -
(V
FD1
) - (V
FD2
)
C2
+V
IN
C1
3
4
6
V
OUT
= -V
IN
C4
D1
D1, D2 = 1N4148
C3
D2
SHDN
Figure 6. Combined Doubler and Inverter
MAX1697
4
1
GND
OUT
V+
R
L
Figure 7. Heavy Load Connected to a Positive Supply
TRANSISTOR COUNT: 275
MAX1697
MAX1697
2
1
V
OUT
C2
2
+V
IN
C1
C1
3
3
4
4
6
5
5
6
1
V
OUT
= -V
IN
R
OUT
=
R
OUT
OF SINGLE DEVICE
NUMBER OF DEVICES
…
…
SHDN
Figure 5. Paralleling MAX1697s to Reduce Output Resistance
Chip Information
MAX1697
MAX1697
2
1
V
OUT
C2
2
+V
IN
C1
C2
SHDN
C1
3
3
4
4
6
5
5
6
1
V
OUT
= -nV
IN
…
…
Figure 4. Cascading MAX1697s to Increase Output Voltage
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