FEATURES
ㅁ Oscillator boost from 10kHz to 45kHz
ㅁ Converts +5V Logic Supply to ±5V System
ㅁ Wide Input Voltage Range .................... 1.5V to 12V
ㅁ Efficient Voltage Conversion ......................... 99.9%
ㅁ Excellent Power Efficiency ...............................98%
ㅁ Low Power Supply ..............................80µA @ 5 VIN
ㅁ Low Cost and Easy to Use
  - Only Two External Capacitors Required
ㅁ Available in Small Outline (SOIC) Package
ㅁ Improved ESD Protection ..................... Up to 10kV
ㅁ No External Diode Required for High Voltage Operation

GENERAL DESCRIPTION
The TC7660S is a pin-compatible upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +12V input to a corresponding -1.5V to -12V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and EMI. Added features include an extended supply range to 12V, and a frequency boost pin for higher operating frequency, allowing the use of smaller external capacitors. The on-board oscillator operates at a nominal frequency of 10kHz. Frequency is increased to 45kHz when pin 1 is connected to V+. Operation below 10kHz (for lower supply current applications) is possible by connecting an external capacitor from OSC to ground (with pin 1 open). The TC7660S is available in both 8-pin DIP and 8-pin small outline (SOIC) packages in commercial and extended temperature ranges.

TC7660SCOA TC7660SCPA TC7660SEJA TC7660SEOA TC7660SEPA TC7660SMJA TC7660EV

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ㅁ INPUT VOLTAGEUP TO 40V
ㅁ OUTPUT VOLTAGEADJUSTABLE FROM 2 TO 37V
ㅁ POSITIVEOR NEGATIVE SUPPLY OPERATION
ㅁ SERIES, SHUNT, SWITCHING OR FLOATING OPERATION
ㅁ OUTPUT CURRENT TO 150mAWITHOUT EXTERNAL PASS TRANSISTOR
ㅁ ADJUSTABLE CURRENT LIMITING

DESCRIPTION
The LM723 is a monolithic integrated programmable voltage regulator, assembled in 14-lead dual in-line plastic and SO-14 micropackage. The circuit provides internal current limiting. When the output current excedes 150mA an external NPN or PNP pass element may be used. Provisions are made for adjustable current limiting and remote shut-down.

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