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參數資料
| 型號： | HT7660 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | CMOS Switched-Capacitor Voltage Converter(CMOS可變電容變壓器) |
| 中文描述： | CMOS開關電容電壓轉換器（的CMOS可變電容變壓器） |
| 文件頁數： | 1/9頁 |
| 文件大小： | 98K |
| 代理商： | HT7660 |
HT7660
CMOS Switched-Capacitor Voltage Converter
Block Diagram
1
November 30, 1999
Features
Simple conversion of V
DD
to V
DD
Cascade connection (two devices are
connected, V
OUT
= 2 V
DD
)
Boost pin for higher switching frequency
Easy to use
Requires only two external capacitors
No external diode required
Typically with no load voltage conversion,
99.9% efficiency
Typical power efficiency is 98%
Wide operating voltage range: 3V to 12V
Applications
RS-232 power supply
On board negative supply for dynamic
RAMS
Supply voltage splitter, V
O
=
V
DD
/2
Operation amplifier supply
Data acquisition systems
Positive voltage doubler
General Description
HT7660isamonolithicCMOSswitched-capaci-
tor voltage converter. HT7660 is designed to
complete a voltage conversion from positive to
negative. The only required external compo-
nentsaretwolowcostelectrolyticcapacitors.
HT7660 includes a voltage regulator, an RC os-
cillator and four output power MOS switches.
The frequency of an RC oscillator can be low-
ered by adding an external capacitor between
V
DD
and the OSC pin, or an external clock can
beconnectedtotheOSCpintoreplacetheorigi-
nal oscillator. The LV terminal may be tied to
VSS to disable the voltage regulator. By doing
this, low voltage operation can be improved.
Voltage
Regulator
Voltage
Level Shifter
RC
Oscillator
Logic
Network
OSC
BOOST
LV
VSS
VDD
CAP+
CAP
VOUT
相關PDF資料 |
PDF描述 |
|---|---|
| HT7700 | Key & Touch Linear Dimmer |
| HT7700A | Key & Touch Linear Dimmer |
| HT7700B | Key & Touch Linear Dimmer |
| HT7700C | Key & Touch Linear Dimmer |
| HT7700D | Key & Touch Linear Dimmer |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT7660(8DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC-to-DC Voltage Converter |
| HT7660(8SOIC) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC-to-DC Voltage Converter |
| HT7660_03 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:CMOS Switched-Capacitor Voltage Converter |
| HT7700 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Key & Touch Linear Dimmer |
| HT7700A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Key & Touch Linear Dimmer |
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