TC7660SCPA Microchip

TC7660S Super Charge Pump DC-to-DC Voltage Converter Features: Package Types Oscillator boost from 10 kHz to 45 kHz PDIP/CERDIP/SOIC Converts +5V Logic Supply to 5V System Wide Input Voltage Range: +1.5V to +12V + BOOST 1 8 V Efficient Voltage Conversion (99.9%, typical) + 2 7 OSC CAP Excellent Power Efficiency (98%, typical) TC7660S LOW GND 3 6 Low Power Consumption: 80 A (typical) V = 5V IN VOLTAGE (LV) Low Cost and Easy to Use - 4 5 V CAP OUT - Only Two External Capacitors Required Available in 8-Pin Small Outline (SOIC) and 8-Pin PDIP Packages General Description: Improved ESD Protection (10 kV HBM) The TC7660S device is a pin-compatible replacement No External Diode Required for High-Voltage for the industry standard 7660 charge pump voltage Operation converter. It converts a +1.5V to +12V input to a corre- sponding -1.5V to -12V output using only two low-cost Applications: capacitors, eliminating inductors and their associated RS-232 Negative Power Supply cost, size and electromagnetic interference (EMI). Simple Conversion of +5V to 5V Supplies Added features include an extended supply range to + 12V, and a frequency boost pin for higher operating fre- Voltage Multiplication V = n V OUT quency, allowing the use of smaller external capacitors. Negative Supplies for Data Acquisition Systems The on-board oscillator operates at a nominal fre- and Instrumentation quency of 10 kHz. Frequency is increased to 45 kHz + when pin 1 is connected to V . Operation below 10 kHz (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 8-Pin PDIP and 8-Pin Small Outline (SOIC) packages in commercial and extended temperature ranges. 2001-2013 Microchip Technology Inc. DS20001467B-page 1TC7660S Functional Block Diagram + + V CAP 82 1 BOOST Voltage 7 4 RC OSC Level 2 CAP- Oscillator Translator 6 LV 5 V OUT InInteterrnnalal VVooltltageage Regulator Regulator Logic Network TC7660S 3 GND DS20001467B-page 2 2001-2013 Microchip Technology Inc.