SP6660 Datasheet, PDF (16/22 Pages) Sipex Corporation – 200mA Charge Pump Inverter or Doubler

+V_IN
FC 1
8
CAP+
2
SP6660
7
OSC
C1
GND
3
“1”
LV
6
C1 x 2
CAP- ₄
5 ^OUT
FC 1
CAP+
2
GND
3
CAP- ₄
SP6660
“2”
+V_IN
8
7
LV
6
5 ^OUT
OSC
C1 x n
FC 1
CAP+
2
GND
3
CAP- ₄
SP6660
“n”
+V_IN
8
7
LV
6
5 ^OUT
OSC
V_OUT
C2
C2 _ 2
V_OUT = -n x V_IN
where V_OUT = output voltage,
V_IN = input voltage, and
n = the total number of SP6660 devices connected.
C2 _ n
Figure 25. SP6660 Devices Cascaded to Provide a Multiple of a Negative Inverted Output Voltage
+V_IN
FC 1
8
CAP+
2
SP6660
7
OSC
C1
GND
3
“1”
LV
6
C1 _ 2
CAP- ₄
5 ^OUT
FC 1
CAP+
2
GND
3
CAP- ₄
SP6660
“2”
+V_IN
8
7
OSC
LV
6
C1 _ n
5 ^OUT
FC 1
CAP+
2
GND
3
CAP- ₄
SP6660
“n”
+V_IN
8
7
OSC
LV
6
5 ^OUT
R_TOT
R_TOT =
R_OUT
n
where R_TOT = total resistance of the SP6660 devices connected in parallel,
C2
R_OUT = the output resistance of a single SP6660 device, and
n = the total number of SP6660 devices connected in parallel.
Figure 26. SP6660 Devices Connected in Parallel to Reduce Output Resistance
SP6660DS/11
SP6660 200mA Charge Pump Inverter or Doubler
16
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