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TC7660SEJA Folha de dados(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC7660SEJA Folha de dados(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 8 page 4-69 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 FEATURES s Oscillator boost from 10kHz to 45kHz s Converts +5V Logic Supply to ±5V System s Wide Input Voltage Range .................... 1.5V to 12V s Efficient Voltage Conversion ......................... 99.9% s Excellent Power Efficiency ............................... 98% s Low Power Supply .............................. 80 µA @ 5 VIN s Low Cost and Easy to Use — Only Two External Capacitors Required s Available in Small Outline (SOIC) Package s Improved ESD Protection ..................... Up to 10kV s No External Diode Required for High Voltage Operation GENERAL DESCRIPTION The TC7660S is a pin-compatible upgrade to the Indus- try 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. TC7660S FUNCTIONAL BLOCK DIAGRAM TC7660S GND INTERNAL VOLTAGE REGULATOR RC OSCILLATOR VOLTAGE– LEVEL TRANSLATOR ÷ 2 V + CAP + 82 7 6 OSC LV 3 LOGIC NETWORK VOUT 5 CAP – 4 1 BOOST SUPER CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER PIN CONFIGURATION (DIP and SOIC) 1 2 3 4 8 7 6 5 TC7660SCPA TC7660SEJA TC7660SEPA TC7660SCOA TC7660SEOA Boost CAP + GND CAP – Boost CAP + GND CAP – VOUT LOW VOLTAGE (LV) OSC + V VOUT LOW VOLTAGE (LV) OSC + V 1 2 3 4 8 7 6 5 TC7660S-14 9/16/96 EVALUATION KIT AVAILABLE ORDERING INFORMATION Temperature Part No. Package Range TC7660SCOA 8-Pin SOIC 0 °C to +70°C TC7660SCPA 8-Pin Plastic DIP 0 °C to +70°C TC7660SEJA 8-Pin CerDIP – 40 °C to +85°C TC7660SEOA 8-Pin SOIC – 40 °C to +85°C TC7660SEPA 8-Pin Plastic DIP – 40 °C to +85°C TC7660SMJA 8-Pin CerDIP – 55 °C to +125°C TC7660EV Evaluation Kit for Charge Pump Family |
Nº de peça semelhante - TC7660SEJA |
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Descrição semelhante - TC7660SEJA |
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