HT7660

HOLTEK Semiconductor Inc.
HT7660 CMOS Switched-Capacitor Voltage Converter Features · Simple conversion of VDD to -VDD · No external diode required · Cascade connection (two devices are connected, · Typically with no load voltage conversion, 99.9% effi- VOUT= -2 VDD) ciency · Boost pin for higher switching frequency · Typical power efficiency is 98% · Easy to use · Wide operating voltage range: 3V to 12V · 8-pi...
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  • Корпус: SOP-8
  • Норма упаковки: 10  шт.

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HT7660 CMOS Switched-Capacitor Voltage Converter Features · Simple conversion of VDD to -VDD · No external diode required · Cascade connection (two devices are connected, · Typically with no load voltage conversion, 99.9% effi- VOUT= -2 VDD) ciency · Boost pin for higher switching frequency · Typical power efficiency is 98% · Easy to use · Wide operating voltage range: 3V to 12V · 8-pin DIP/SOP package - Requires only two external capacitors Applications · RS-232 power supply · Operation amplifier supply · On board negative supply for dynamic RAMS · Data acquisition systems · Supply voltage splitter, VO= ± VDD/2 · Positive voltage doubler General Description HT7660 is a monolithic CMOS switched-capacitor voltage converter. HT7660 is designed to complete a voltage conversion from positive to negative. The only required external components are two low cost electrolytic capacitors. an RC oscillator can be lowered by adding an external capacitor between VDD and the OSC pin, or an external clock can be connected to the OSC pin to replace the original oscillator. The LV terminal may be tied to VSS to disable the voltage regulator. By doing this, low voltage operation can be improved. HT7660 includes a voltage regulator, an RC oscillator and four output power MOS switches. The frequency of Block Diagram VDD OSC BOOST RC Oscillator CAP+ Voltage Level Shifter CAP VOUT LV Voltage Regulator Logic Network VSS Rev. 1.11 1 February 23, 2009 PDF
Документация на HT7660 

HT7660 - CMOS Switched-Capacitor Voltage Converter

Дата модификации: 24.04.2013

Размер: 101.5 Кб

10 стр.

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