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TCM828ECT713

TCM828ECT713 Description

The TCM828ECT713 from Microchip Technology is a compact, fixed-output charge pump DC-DC switching regulator designed for low-power voltage inversion or doubling applications. Operating within a 1.5V to 5.5V input range, it delivers up to 25mA of output current with a ratiometric function, ensuring stable performance across varying input conditions. Its 12kHz switching frequency and non-synchronous rectification topology make it suitable for noise-sensitive designs. Packaged in a SOT-23 form factor and available in Tape & Reel (TR), this obsolete but reliable IC remains a viable choice for legacy or low-complexity systems requiring minimal external components.

TCM828ECT713 Features

• Wide Input Range: Supports 1.5V–5.5V, ideal for battery-powered devices (e.g., 1-cell Li-ion or 3xAA systems).
• Flexible Output Configuration: Generates positive or negative voltages, enabling versatile use in biasing or signal conditioning.
• Low Component Count: Charge pump topology eliminates inductors, reducing board space and cost.
• Ratiometric Operation: Output scales with input, simplifying calibration in sensor interfaces.
• Robust Compliance: ROHS3 and REACH unaffected, with MSL 1 suitability for extended storage.
• Low Noise: 12kHz switching minimizes EMI, critical for analog or mixed-signal circuits.

TCM828ECT713 Applications

• Portable Electronics: Voltage inversion for LCD bias or op-amp supplies in handheld devices.
• Sensor Interfaces: Ratiometric output for strain gauges, pressure sensors, or bridge circuits.
• Legacy Systems: Cost-effective replacement or maintenance of older designs requiring ±5V rails.
• Low-Power Analog Circuits: Biasing for audio amplifiers, data converters, or signal chains.

Conclusion of TCM828ECT713

While marked obsolete, the TCM828ECT713 offers a balance of simplicity, efficiency, and flexibility for low-current DC-DC conversion. Its inductorless design, wide input range, and dual-output capability make it a pragmatic choice for space-constrained or noise-sensitive applications. Engineers seeking a drop-in solution for voltage inversion or ratiometric power delivery in legacy or low-complexity systems will find this IC a reliable option, despite its discontinued status. For new designs, consider modern alternatives with higher efficiency or advanced features.