MAX8794ETB/V+T

Overview

The MAX8794ETB/V+T is a low-voltage DDR linear regulator designed for high-current applications. It sources and sinks up to 3A peak current using internal n-channel MOSFETs. The device delivers an accurate output voltage ranging from 0.5V to 1.5V, powered by a low-voltage input between 1.1V and 3.6V. A separate 3.3V bias supply powers the control circuitry. Key electrical parameters include ±15mV maximum load-regulation error and a typical 2ms power-good delay. It operates within a temperature range of -40°C to +85°C and is housed in a compact 10-pin, 3mm x 3mm TDFN package.

Feature Summary

• Integrates internal n-channel MOSFETs capable of sourcing and sinking up to 3A peak current with built-in current limiting.
• Provides fast load-transient response and supports dynamically adjustable output voltages for active-DDR termination buses.
• Includes thermal-fault protection and a shutdown input to prevent damage and manage power states effectively.

Applications

• Active-DDR termination bus powering
• Low-power chipset voltage regulation
• Graphics processor core voltage adjustment

Procurement Notes

Verify the specific suffix 'V+' against the official Analog Devices datasheet to confirm lead-free compliance and tape-and-reel packaging specifications. Ensure the order matches the exact part number MAX8794ETB/V+T to avoid discrepancies in pinout or electrical characteristics. Cross-reference the manufacturer's latest documentation for any obsolescence notices or recommended design changes before finalizing procurement.

Selection Notes

Select this component when designing systems requiring precise, low-noise voltage regulation for DDR memory interfaces. It is suitable for applications needing dynamic voltage scaling for graphics processors or chipsets. The integrated MOSFETs eliminate the need for external pass transistors, simplifying the bill of materials. Ensure the design accommodates the required 3.3V bias supply for optimal control circuitry performance.

Part Context

The MAX8794 belongs to Maxim Integrated's portfolio of specialized linear regulators tailored for memory and high-performance computing applications. This series focuses on delivering stable power with minimal external component count. The TDFN package allows for space-constrained PCB layouts while maintaining thermal efficiency. It complements other PMIC solutions by addressing specific low-voltage, high-current demands in digital logic circuits.

FAQ

Does the MAX8794 require external capacitors?

Yes, it supports both ceramic and polymer output capacitors for stability.

How does the device indicate regulation status?

It generates a Power-Good (PGOOD) signal that remains low until the output regulates for approximately 2ms.