Analog Devices LTC3374

Description

The LTC®3374 is a high efficiency multioutput power supplyIC. The DC/DCs consist of eight synchronous buckconverters (1A each) all powered from independent 2.25Vto 5.5V input supplies.The DC/DCs may be used independently or in parallel toachieve higher currents of up to 4A per output with a sharedinductor. The common buck switching frequency may beprogrammed with an external resistor, synchronized to anexternal oscillator, or set to a default internal 2MHz clock.The operating mode for all DC/DCs may be programmedvia the MODE pin.To reduce input noise the buck converters are phased in90° steps. Precision enable pin thresholds provide reliablepower-up sequencing. The LTC3374 is available in acompact 38-lead 5mm × 7mm QFN package as well as a38-lead TSSOP package.

Features

8-Channel Independent Step-Down DC/DCsMaster-Slave Configurable for Up to 4A per OutputRail with a Single InductorIndependent VIN Supplies for Each DC/DC(2.25V to 5.5V)All DC/DCs Have 0.8V to VIN Output RangePrecision Enable Pin Thresholds for AutonomousSequencing1MHz to 3MHz Programmable/SynchronizableOscillator Frequency (2MHz Default)Die Temperature Monitor OutputThermally-Enhanced 38-Lead QFN (5mm × 7mm)and TSSOP Packages

Typical applications

• Industrial/Automotive/Communications
• General Purpose Multichannel Power Supplies

More information

• Datasheet
• IC product information