General Description
The TC7662A is a pin-compatible upgrade to the industry standard TC7660 charge pump voltage converter. It converts a +3V to +18V input to a corresponding -3V to -18V output using only two low cost capacitors, eliminating inductors and their associated cost, size and EMI. In addition to a wider power supply input range (3V to 18V versus 1.5V to 10V for the TC7660), the TC7662A can source output currents as high as 40mA. The on-board oscillator operates at a nominal frequency of 12kHz. Operation below 12kHz (for lower supply current applications) is also possible by connecting an external capacitor from OSC to ground.

FEATUREs
• Wide Operating Range
   - 3V to 18V
• Increased Output Current (40mA)
• Pin Compatible with ICL7662/SI7661/TC7660/LTC1044
• No External Diodes Required
• Low Output Impedance @ IL = 20mA
   - 40Ω Typ.
• No Low-Voltage Terminal Required
• CMOS Construction
• Available in 8-Pin PDIP and 8-Pin CERDIP Packages

APPLICATIONs
• Laptop Computers
• Disk Drives
• Process Instrumentation
• μP-based Controllers