MAX640C/D

Voltage Regulators - DC DC Switching Regulators Overview

The MAX640C/D is a switched-capacitor voltage regulator manufactured by Analog Devices Inc./Maxim Integrated. It operates with an input voltage range of 3 V to 5.5 V and features a maximum switching frequency of 2000 kHz. The device supports dual functionality as both a voltage doubler and an inverter, providing flexible power conversion capabilities for single-supply applications. Designed for commercial temperature ranges, it operates between -40 °C and +85 °C. The component is available in an 8-pin package configuration suitable for surface-mount integration.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides simultaneous voltage doubling and inversion capabilities within a single integrated circuit
• Operates efficiently from a single low-voltage supply source without requiring external inductors
• Features a high-frequency switching architecture that minimizes the size of external passive components

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring negative voltage rails
• RS-232 communication interface circuits needing dual polarity supplies
• Single-supply operational amplifier biasing applications

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm specific suffix designations match required electrical characteristics and packaging options. Ensure compliance with RoHS directives if lead-free variants are specified for modern manufacturing processes. Validate thermal performance requirements against the commercial operating temperature range during system integration planning.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when space-constrained designs require both positive boost and negative generation from a single rail. Evaluate the output current requirements against the internal switch resistance limitations inherent to switched-capacitor topologies. Consider the 2000 kHz switching frequency impact on electromagnetic interference filtering needs within the target application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to Maxim's family of switched-capacitor power management solutions designed for compact electronics. It addresses the need for simple, cost-effective voltage translation in systems where inductor-based DC-DC converters would consume excessive board area. The technology leverages capacitor charge transfer principles to achieve efficient voltage transformation at moderate power levels.