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MFG:VISHAY  Package Cooled:SO-8  D/C:02+  

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Part Number: GS7660

 

MFG: VISHAY

Package Cooled: SO-8

D/C: 02+

Description: The GS7660 is a monolithic CMOS switched capacitor voltage converter, designed to be an improved direct replaceme...


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GS7660 General 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 regulator, 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.

GS7660 Maximum Ratings

Parameter Symbol Value Unit
Supply Voltage (VIN to GND) VIN 6.0 V
Input Voltage (Pin 1, 6 and 7) VIN 0.3V VIN (VIN, +0.3V) V
LV Input Current LV1 20 µA
Output Short Circuit Duration   Continuous  
Operating Junction Temperature Range TJ 40 to +125 °C
Storage Temperature Range TS 65 to +150 °C
Continuous Power Dissipation
Plastic Dip (Derate 7.9mW/°C above 70°C) SO-8 (Derate 6mW/°C above 70°C) 		PD 630
480		 mW

GS7660 Features

• Low output impedance ( typical 35Ω at VIN = 5V )
• Low quiescent current ( typical 36µA 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

GS7660 Typical Application

• 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

GS7660 Connection Diagram

GS7660 Connection Diagram

GS7660 datasheet

GS7660
PDF/DataSheet Download

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