SP6828 Datasheet, PDF (15/17 Pages) Sipex Corporation – +3V Low Power Voltage Inverters

+V_IN
IN
2
IN
2
IN
2
RL
C1+
5
SP6828
C1
GND
SP6829
4
C1+
5
SP6828
C1
GND
SP6829
4
C1+
5
SP6828
C1
GND
SP6829
4
C1- ₃
“1”
1 ^OUT
C1- ₃
“2”
1 ^OUT
C1- ₃
“n”
1 ^OUT
V_OUT
V_OUT = -V_IN
R_TOT =
R_OUT
n
where
V_OUT = output voltage,
V_IN = input voltage,
R_TOT = total resistance of the devices connected in parallel,
R_OUT = the output resistance of a single device, and
n = the total number of devices connected in parallel.
Figure 26. SP6828/6829 Devices Connected in Parallel to Reduce Total Output Resistance
C2 x n
+V_IN
IN
2
IN
2
C1+
5
SP6828
C1+
5
SP6828
C1
GND
SP6829
4
C1
GND
SP6829
4
C1
“1”
C1- ₃
5 ^OUT
C1- ₃
“2”
1 ^OUT
C2
C2
V_OUT = -n x V_IN
where V_OUT = output voltage,
V_IN = input voltage, and
n = the total number of devices connected.
Figure 27. SP6828/6829 Devices Cascaded to Increase Output Voltage
C1+
3
GND
4
C1- ₅
SP6828
SP6829
“n”
IN
2
1 ^OUT
V_OUT
C2
SIPEX PART
NUMBER
MANUFACTURER
PART NUMBER
CAPACITANCE /
VOLTAGE
MAX ESR
@ 100kHz
SP6828
AVX
TPSC106*025
10µF / 25V
0.5Ω
SP6828
SPRAGUE
593D106X035
10µF / 35V
0.3Ω
SP6828
KEMET
T494C106*020
10µF / 20V
0.5Ω
SP6828
SANYO-OSCON 94SC106X0016C
10µF / 16V
0.15Ω
SP6829
KEMET
T494B335*020
3.3µF / 20V
1.5Ω
SP6829
SPRAGUE
595D335X0035
3.3µF / 35V
2.0Ω
SP6829
SANYO-OSCON 94SC335X0016A
3.3µF / 16V
0.35Ω
Table 1. Suggested Low ESR Tantalum Capacitors
PACKAGE
SM Case C
SM Case D
SM Case C
Radial Case C
SM Case B
SM Case C
Radial Case A
SP6828DS/11
SP6828/6829 +3V Low Power Voltage Inverter
15
© Copyright 2000 Sipex Corporation