MAX8640YELT82+

Voltage Regulators - DC DC Switching Regulators Overview

The MAX8640YELT82+ is a synchronous step-down DC-DC converter from the MAX8640 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 2.5 V. The device guarantees an output current of 500 mA while maintaining a typical quiescent current of 28 µA. It utilizes a proprietary PWM control scheme with a switching frequency of up to 2 MHz to optimize efficiency and minimize external component size. The converter features internal fast soft-start and synchronous rectification, eliminating the need for an external Schottky diode. It is housed in a compact SC-70-6 package and supports operation over an extended temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Proprietary PWM control scheme optimizes switching frequency for high efficiency with small external components
• Internal synchronous rectification improves efficiency and replaces external Schottky diodes
• Factory-preset output voltages eliminate the need for external feedback components
• Internal fast soft-start eliminates inrush current to reduce input capacitor requirements

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring small form factor power solutions
• Battery-powered devices prioritizing high efficiency and low output ripple
• Systems utilizing space-constrained SC-70 or µDFN packages

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'ELT82' against official manufacturer documentation to confirm the exact output voltage setting and package variant. Ensure compatibility with the required 2.5 V fixed output configuration. Confirm that the SC-70-6 package dimensions align with the target PCB layout constraints. Cross-reference the RoHS compliance status and lead-free specifications as indicated in the product datasheet prior to final procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when design priorities include minimizing board space through tiny passive components enabled by the 2 MHz switching frequency. It is suitable for applications requiring guaranteed 500 mA output current with low static current consumption. Consider the fixed 2.5 V output capability if external feedback resistors are undesirable. Evaluate the thermal performance within the SC-70-6 package against the expected load conditions and ambient temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

The MAX8640YELT82+ belongs to the MAX8640 series of tiny, high-efficiency synchronous step-down converters. This family is designed for applications where small size, high efficiency, and low output ripple are critical. The MAX8640Y variant specifically switches at up to 2 MHz, allowing the use of slightly larger inductors and capacitors compared to the 4 MHz MAX8640Z, while still maintaining a compact footprint. The series integrates all necessary control logic and power switches into a single chip.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The MAX8640Z series offers similar functionality but operates at higher frequencies up to 4 MHz, enabling smaller external components. For pin-compatible alternatives within the same package, verify other MAX8640 variants with matching output voltage settings. Ensure any replacement maintains the 500 mA output current guarantee and compatible input voltage range.