TC7662B Datasheet | Microchip Technology

EVALUATION KIT AVAILABLE CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER Features s s s s s Wide Operating Voltage Range: 1.5V to 15V Boost Pin (Pin 1) for Higher Switching Frequency High Power Efficiency is 96% Easy to Use - Requires Only 2 External Non-Critical Passive ponents Improved Direct Replacement for Industry Standard ICL7660 and Other Second Source Devices GENERAL DESCRIPTION The TC7662B is a pin-patible upgrade to the Industry standard TC7660 charge pump voltage converter. It converts a +1.5V to +15V input to a corresponding - 1.5 to - 15V output using only two low-cost capacitors, eliminating inductors and their associated cost, size and EMI. The on-board oscillator operates at a nominal frequency of 10k Hz. Frequency is increased to 35k Hz when pin 1 is connected to V+, allowing the use of smaller external capacitors. Operation below 10k Hz (for lower supply current applications) is also possible by connecting an external capacitor from OSC to ground (with pin 1 open). The TC7662B is available in both 8-pin DIP and 8-pin small outline (SO) packages in mercial and extended temperature ranges. APPLICATIONS s s s s s Simple Conversion of +5V to ±5V Supplies Voltage Multiplication VOUT = ±n VIN Negative Supplies for Data Acquisition Systems and Instrumentation RS232 Power Supplies Supply Splitter, VOUT = ±VS/2 ORDERING INFORMATION Part No. Package 8-Pin SOIC 8-Pin Plastic DIP 8-Pin SOIC 8-Pin Plastic DIP Temperature Range 0°C to +70°C 0°C to +70°C - 40°C to +85°C - 40°C to +85°C PIN CONFIGURATION (DIP AND SOIC) BOOST 1 CAP + 2 8 V+ 7 OSC BOOST 1 CAP + 2 GND 3 CAP - 4 8 V+ 7 OSC TC7662BCOA 6 LOW VOLTAGE (LV) TC7662BEOA 5 VOUT TC7662BCOA TC7662BCPA TC7662BEOA TC7662BEPA GND 3 TC7662BCPA 6 LOW VOLTAGE (LV) TC7662BEPA 5 VOUT CAP - 4 TC7660EV Evaluation Kit for Charge Pump Family FUNCTIONAL BLOCK DIAGRAM V + CAP + 8 BOOST 1 2 RC OSCILLATOR ÷2 VOLTAGE- LEVEL TRANSLATOR -...