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GS7660IP Folha de dados(PDF) 1 Page - Vishay Siliconix |
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GS7660IP Folha de dados(HTML) 1 Page - Vishay Siliconix |
1 / 9 page Description The GS7660 is a monolithic CMOS switched capacitor voltage converter, designed to be an improved direct replacement of the popular ICL7660, MAX1044 and LTC1044. They perform supply voltage conversions from positive to negative for an input voltage range of +1.5V to +6.0V to their negative complements of –1.5V to –6.0V. The input voltage can also be doubled (VOUT = 2VIN), halved (VOUT = VIN/2), or multiplied (VOUT = ± n.VIN). Contained on the chip are a series Power Supply regula- tor, Oscillator, control Circuitry and four Power MOS Switches. The oscillator, when unloaded, oscillates at a nominal frequency of 10 kHz, with an Input voltage of 5.0V. This frequency can be lowered by the addition of an external capacitor to the “Osc” terminal or overdriven by an external frequency source. An Oscillator “boost” function is available to increase the oscillator frequency which will optimize performance of certain parameters. The Lv input can be connected to ground to improve low voltage operation (VIN ≤ 3V), or left open for input voltages greater than 3V to reduce power dissipation. The GS7660 provides superior performance over earlier designs by combining low output impedance and low qui- escent current with high efficiency and by eliminating diode voltage drop losses. The only external components required are two low cost electrolytic capacitors. 8 Pin Dip SO-8 Features • Low output impedance ( typical 35 Ω at VIN = 5V ) • Low quiescent current ( typical 36 µA at VIN = 5V) • High power conversion efficiency ( typical 98% ) • Simple and accurate voltage conversion from positive to negative polarities • Improved latch-up protection • No external diodes required Applications • – 5V supply from + 5V logic supply • EIA/TIA – 232E and EIA/TIA – 562 power supplies • Portable telephones • Data acquisition systems • Personal communications equipment • Panel meters • Handheld instruments Typical Application Circuit 10 µF C1 VOUT = --VIN VIN (1.5V to 6V) Required for VIN 3V + + 10 µF C2 GS7660 Negative Voltage Converter 1 2 3 4 5 6 7 8 GS7660 Vishay formerly General Semiconductor Document Number 74819 www.vishay.com 24-May-02 1 New Product Switched-Capacitor Voltage Converter |
Nº de peça semelhante - GS7660IP |
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Descrição semelhante - GS7660IP |
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