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| 型號： | SP6660EP |
| 英文描述： | 200mA Charge Pump Inverter or Doubler |
| 中文描述： | 200毫安充電泵逆變器或倍增 |
| 文件頁數(shù)： | 12/22頁 |
| 文件大?。?/td> | 284K |
| 代理商： | SP6660EP |
SP6660DS/11 SP6660 200mA Charge Pump Inverter or Doubler
Copyright 2000 Sipex Corporation
12
THEORY OF OPERATION
Negative Voltage Inverter
This is the most common application of the
SP6660
where a +1.5V to +4.25V input is
converted to a -1.5V to -4.25V output. In the
inverting mode, the
SP6660
is typically operated
with LV connected to GND. Since the LV may
be left open, the substitution of the
SP6660
for
the ICL7660 industry standard is simplified.
The circuit for the voltage inverter mode can be
found in
Figure 21
.
This operating circuit uses
only two external capacitors, C1 and C2, for
the internal charge pump. This allows designers
to avoid any EMI concerns with the costly,
space-consuming inductors typically used with
switching regulators.
Figure 21. Typical Operating Circuit for the Voltage Inverter
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
NEGATIVE
VOLTAGE
OUTPUT
TYPICAL CIRCUIT: VOLTAGE INVERTER
+V
The
SP6660
is insensitive to load current
changes. Output Source Resistance vs. Supply
Voltage and Temperature curves are shown in
Figures 14
to
16
.
A typical output source
resistance of 5.2
allows an output voltage of
-4.25V under light load with an input of +4.25V.
This output voltage decreases to only -4.0V
with a load current draw of 100mA.
The peak-to-peak output ripple voltage is
calculated as follows:
V
RIPPLE
=
+ I
OUT
(ESR
C2
)
I
OUT
2(f
PUMP
)(C2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6660EU | 200mA Charge Pump Inverter or Doubler |
| SP6660CP | 200mA Charge Pump Inverter or Doubler |
| SP6660CU | 200mA Charge Pump Inverter or Doubler |
| SP6660 | 200mA Charge Pump Inverter or Doubler |
| SP6661 | High Frequency 200mA Charge Pump Inverter or Doubler |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| SP6660EU | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:200mA Charge Pump Inverter or Doubler |
| SP6660EU-L | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 200mA Inverter or Doubler RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SP6660EU-L/TR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 200mA Inverter or Doubler RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SP6661 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Frequency 200mA Charge Pump Inverter or Doubler |
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