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TCM680

TelCom Semiconductor
Part Number TCM680
Manufacturer TelCom Semiconductor
Description +5V TO 10V VOLTAGE CONVERTER
Published Apr 23, 2005
Detailed Description EVALUATION KIT AVAILABLE 1 TCM680 +5V TO ±10V VOLTAGE CONVERTER FEATURES s s s s s 99% Voltage Conversion Efficiency 8...
Datasheet PDF File TCM680 PDF File

TCM680
TCM680

Overview
EVALUATION KIT AVAILABLE 1 TCM680 +5V TO ±10V VOLTAGE CONVERTER FEATURES s s s s s 99% Voltage Conversion Efficiency 85% Power Conversion Efficiency Wide Voltage Range +2.
0V to +5.
5V Only 4 External Capacitors Required Space Saving 8-Pin SOIC Design GENERAL DESCRIPTION The TCM680 is a dual charge pump voltage converter that develops output voltages of +2VIN and – 2VIN from a single input voltage of +2.
0V to +5.
5V.
Common applications include ±10V from a single +5V logic supply, and ±6V from a +3V lithium battery.
The TCM680 is packaged in a space-saving 8-pin SOIC package and requires only four inexpensive external capacitors.
The charge pumps are clocked by an on-board 8kHz oscillator.
Low output source impedances (typically 150Ω) provides maximum output currents of 10mA for each output.
Typical power conversion efficiency is 85%.
High efficiency, small installed size and low cost make the TCM680 suitable for a wide variety of applications that need both positive and negative power supplies derived from a single input voltage.
2 3 4 5 6 7 APPLICATIONS s s s s s s s ±10V From +5V Logic Supply ±6V From a 3V Lithium Cell Handheld Instruments Portable Cellular Phones LCD Display Bias Generator Panel Meters Operational Amplifier Power Supplies PIN CONFIGURATIONS (DIP AND SOIC) – C1 + C2 – C2 – VOUT 1 2 3 4 TCM680CPA TCM680EPA 8 7 6 5 + VOUT C1 + ORDERING INFORMATION Part No.
TCM680COA TCM680CPA TCM680EOA TCM680EPA TC7660EV Package Temperature 8-Pin SOIC 0°C to +70°C 8-Pin Plastic DIP 0°C to +70°C 8-Pin SOIC – 40°C to +85°C 8-Pin Plastic DIP – 40°C to +85°C Charge Pump Family Evaluation Kit VIN GND C1– + C2 C– 2 1 2 3 4 TCM680COA TCM680EOA 8 7 6 5 + VOUT + C1 VIN GND V– OUT TYPICAL OPERATING CIRCUIT 2.
0V5V +5V + C1 VIN VOUT + 4.
7µF + C4 + VOUT = ( 2 x VIN) + C1 4.
7µF – C1 + C2 TCM680 C2 4.
7µF + – C2 GND – VOUT 4.
7µF + C3 – = (– 2 x V ) VOUT IN GND GND TC660-2 9/4/96 8 4-13 TELCOM SEMICONDUCTOR, INC.
+5V TO ±...


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