Datenblatt-Suchmaschine für elektronische Bauteile |
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TC660EOA Datenblatt(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC660EOA Datenblatt(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 8 page 4-5 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 TC660 100mA CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER FEATURES s Pin Compatible with TC7660 s High Output Current ..................................... 100mA s Converts (+1.5V to 5.5V) to (– 1.5V to – 5.5V) s Power Efficiency @100mA ......................... 88% typ s Low Power Consumption ................ 200 µA @ 5 VIN s Low Cost and Easy to Use — Only Two External Capacitors Required s Selectable Oscillator Frequency ....... 10kHz/90kHz s ESD Protection ................................................... 4kV APPLICATIONS s Laptop Computers s µP Based Controllers s Process Instrumentation s Automotive Instruments GENERAL DESCRIPTION The TC660 DC-to-DC voltage converter generates a negative voltage supply, that can support a 100mA maxi- mum load, from a positive voltage input of 1.5V to 5.5V. Only two external capacitors are required. Power supply voltage is stored on an undedicated capacitor then inverted and transferred to an output reser- voir capacitor. The on-board oscillator normally runs at a frequency of 10kHz with V + at 5V. This frequency can be lowered by the addition of an external capacitor from OSC (pin 7) to ground, or raised to 90kHz by connecting the frequency control pin (FC) to V +, in order to optimize capaci- tor size, quiescent current, and output voltage ripple frequency. Operation using input voltage between 1.5V and 3.0V is accommodated by grounding the LV input (pin 6). Operation at higher input voltages (3.0V to 5.5V) is accom- plished by leaving LV open. The TC660 open circuit output voltage is within 0.1% of the input voltage with the output open-circuited. Power conversion efficiency is 98% when output load is between 2mA and 5mA. 1 2 3 4 8 7 6 5 TC660CPA TC660EPA FC CAP + GND CAP – VOUT LV OSC + V 1 2 3 4 8 7 6 5 TC660COA TC660EOA FC CAP + GND CAP – VOUT LV OSC + V TC660 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 FC FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATION (DIP and SOIC) ORDERING INFORMATION Part No. Package Temp. Range TC660COA 8-Pin SOIC 0 °C to +70°C TC660CPA 8-Pin Plastic DIP 0 °C to +70°C TC660EOA 8-Pin SOIC – 40 °C to +85°C TC660EPA 8-Pin Plastic DIP – 40 °C to +85°C TC7660EV Evaluation Kit for Charge Pump Family TC660-2 9/10/96 EVALUATION KIT AVAILABLE |
Ähnliche Teilenummer - TC660EOA |
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Ähnliche Beschreibung - TC660EOA |
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