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SP6660DS/11 SP6660 200mA Charge Pump Inverter or Doubler
Copyright 2000 Sipex Corporation
13
For a nominal f
of 5kHz (where f
OSC
=10kHz)
and C2=150
μ
F with an ESR of 0.2
is approximately 90mV with a 100mA load
current. If C2 is raised to 390
μ
F, the ripple drops
to 45mV. The output ripple voltage is calculated
by noting that capacitor C2 supplies the output
current during one-half of the charge pump cycle.
OSC is internally connected to a 15pF capacitor.
An external capacitor can be added to slow the
oscillator. Designers should take care to
minimize stray capacitance. An external
oscillator may also be connected to overdrive
OSC. Refer to the
Oscillator Control
section
for further details.
Figure 22. Typical Operating Circuit for the Positive Voltage Doubler
OSC
OUT
SP6660
+V
+1.5V to +4.25V
C1
1
μ
F to 150
μ
F
5
1
2
7
4
FC
C2
1
μ
F to 150
μ
F
CAP+
CAP-
GND
6
8
3
LV
DOUBLE
OUTPUT
TYPICAL CIRCUIT: VOLTAGE DOUBLER
+V
Positive Voltage Doubler
The
SP6660
can double the output voltage of an
input power supply or battery. From a +4.25V
input, the circuit in
Figure 22
can provide 100mA
with +8.0V at V+. The no-load voltage output at
V+ is 2(V
INL
).
LV may be tied to OUT pin for all input voltages
in the positive voltage doubler mode. Connect
the power-supply positive voltage input to GND
pin. Connect the power-supply ground input to
OUT pin. V+ is the positive voltage output in
this mode.
Designers may overdrive OSC in the positive
voltage doubler mode. Refer to the
Oscillator
Control
section for further details.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6660EN | 200mA Charge Pump Inverter or Doubler |
| SP6660EP | 200mA Charge Pump Inverter or Doubler |
| SP6660EU | 200mA Charge Pump Inverter or Doubler |
| SP6660CP | 200mA Charge Pump Inverter or Doubler |
| SP6660CU | 200mA Charge Pump Inverter or Doubler |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6660EN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:200mA Charge Pump Inverter or Doubler |
| SP6660EN-L | 功能描述:電荷泵 200mA Inverter or Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| SP6660EN-L/TR | 功能描述:電荷泵 200mA Inverter or Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| SP6660EP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:200mA Charge Pump Inverter or Doubler |
| SP6660EP-L | 功能描述:電荷泵 200mA Inverter or Doubler RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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