LTC3374A Multi-Output Features

• Core Advantages: High independence, flexible configurability, intelligent power management.

• Each step-down converter (Buck1~8) has an independent VIN pin (2.25V~5.5V), allowing different voltage sources (e.g., 3.3V, 5V, 2.7V) to be simultaneously connected to different channels, simplifying multi-system bus (5V and 3.3V coexistence) design.

• Multiple channels can be paralleled (master-slave mode) to configure 2A, 3A, or 4A (up to 4A sharing a single inductor), covering both high-current core rails and low-current peripheral rails.

• Precision enable (EN) pin threshold allows automatic sequencing via a resistor divider (e.g., 1.2V powers up first, 3.3V powers up later), without I2C or an external MCU.

• The 8 switching clocks start up with a 45° phase-shifted interleaving, reducing input peak current ripple and EMI.

• All channels share a common internal 2MHz clock, which can be synchronized to an external 1MHz~3MHz clock via the SYNC pin or adjusted by an RT resistor.

• Provides PGOOD_ALL (±1% accuracy) and TEMP temperature monitoring outputs, offering real-time indication of output rail status and junction temperature.

• Output voltage range from 0.8V to VIN, compatible with low-voltage core logic power supplies.

• Overall Features: A freely partitionable 8-channel micro power plant, supporting fully independent outputs or channel combining, with hardware-level power-up sequencing control.