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SS6660CNTR 数据表(PDF) 1 Page - Silicon Standard Corp. |
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SS6660CNTR 数据表(HTML) 1 Page - Silicon Standard Corp. |
1 / 8 page www.SiliconStandard.com 1 of 8 SS6660 Switched-Capacitor Voltage Converter FEATURES Low output impedance (typ. 35 Ω at VIN=5V) Improved direct replacement for 7660 Operation from 1.5V to 6V No external diode required Simple conversion from +5V to -5V Low quiescent current (typ. 36 µA at VIN=5V) High power efficiency (typ. 98%) Boost pin for higher switching frequency Improved SCR latchup protection APPLICATIONS RS-232 Power Supplies Handheld Instruments Data Acquisition Systems Supply Splitter VOUT = ±VIN/2 Operational Amplifier Supplies Panel Meter TYPICAL APPLICATION CIRCUIT µ VIN (1.5V to 6V) Required for VIN ≤ 3V SS6660 µ Negative voltage converter DESCRIPTION The SS6660 is a monolithic CMOS switched- capacitor voltage converter. Designed to be an improved direct replacement for the popular 7660 and LTC1044, the main function of the SS6660 is to convert a positive input voltage in the range of 1.5V to 6V to the corresponding negative output voltage in the range of 11.5V to -6V. The input voltage can also be doubled (VOUT = 2VIN), divided (VOUT = VIN/2), or multiplied (VOUT = ±nVIN) as shown in the application examples. The chip contains a series DC power supply regulator, oscillator, control circuitry and four output power MOSFET switches. The frequency of the oscillator can be lowered by the addition of an external capacitor to the OSC pin, or the oscillator may be over-driven by an external clock. This boost function is available to raise the oscillator frequency to optimize performance in specific applications. The "LV" terminal may be tied to GND to improve low input-voltage (VIN ≤ 3V) operation, or be left floating for input voltages larger than 3V to improve power dissipation. The SS6660 provides performance superior to previous designs by combining low output impedance, low quiescent current with high efficiency and by eliminating losses from diode voltage drops. The only external components required are two low-cost electrolytic capacitors. Rev.2.02 1/29/2004 |
类似零件编号 - SS6660CNTR |
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类似说明 - SS6660CNTR |
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