LTC3314
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3314

5V, Dual 4A/Dual-Phase 8A Step-Down DC/DC Regulator in 2.2mm × 2.7mm WLCSP

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 1
1ku List Price Starting From $3.01
Features
  • Dual 4A Outputs
  • Configurable as Single Output, 2-Phase 8A Buck
  • High Efficiency: 12mΩ High-Side and 8mΩ Low-Side
  • ±1% Maximum Total DC Output Error
  • Wide Bandwidth, Fast Transient Response
  • VIN Range: 2.25V to 5.5V
  • VOUT Range: 0.5V to VIN
  • Programmable Frequency to 3MHz
  • Low Ripple Burst Mode® Operation with Low IQ
  • Shutdown Current: 1.4μA
  • 35ns Minimum On-Time
  • Internal Compensation
  • Precision Enable, Power Good for Power Sequencing
  • Tiny 30-Lead, 2.2mm × 2.7mm WLCSP Package
Additional Details
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The LTC3314A features dual monolithic synchronous 4A step-down converters in a 2.2mm × 2.7mm package for space saving applications with demanding performance requirements. Using a constant frequency, peak current mode architecture at switching frequencies up to 3MHz, both bucks achieve high efficiency and fast transient response with small external components. The LTC3314A can also be configured as a single output, 2-phase 8A step-down converter.

The LTC3314A operates in forced continuous or pulse-skipping mode for low noise, or in Burst Mode operation for high efficiency at light loads. The common switching frequency is set to a default 2MHz, programmed with an external resistor, or synchronized to an external oscillator via the MODE/SYNC pin. To reduce input ripple current, the dual converters switch 180 degrees out of phase.

With an input range of 2.25V to 5.5V the LTC3314A regulates to outputs as low as 500mV. Other features include precision enable thresholds, PGOOD signals, output overvoltage protection, thermal shutdown, and output short-circuit protection. The device is available in a 30-lead, 2.2mm × 2.7mm WLCSP package.

APPLICATIONS

  • Servers, Telecom Power Supplies, Optical Networking
  • Distributed DC Power Systems (POL)
  • FPGA, ASIC, μP Core Supplies
  • Industrial/Automotive/Communications
Part Models 1
1ku List Price Starting From $3.01

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3314AACBZ-R7
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

DC3204A

LTC3314A | 3.3V to 1.2V and 1.8V at 4A, 2MHz Dual Step-Down DC/DC Regulators

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DC3204A

LTC3314A | 3.3V to 1.2V and 1.8V at 4A, 2MHz Dual Step-Down DC/DC Regulators

LTC3314A | 3.3V to 1.2V and 1.8V at 4A, 2MHz Dual Step-Down DC/DC Regulators

Product Detail

Demo circuit 3204A features the LTC3314A, 5V, dual 4A/dual-phase 8A step-down DC/DC regulator IC. This demo circuit is configured as a 2MHz, 3.3V input buck regulator with dual 4A output at 1.2V and 1.8V.

The LTC3314A features dual monolithic synchronous 4A step-down power stages in a 30-ball, 2.2mm × 2.7mm WLCSP package for space saving applications with demanding performance requirements. Both bucks achieve high efficiency and fast transient response with small external components. The LTC3314A can also be configured as a single output, dual-phase 8A step-down converter. Please refer to DC3205A as a single output dual-phase application example. The LTC3314A data sheet gives a complete description of its operation and application information. The data sheet must be read in conjunction with the demo manual when evaluating or modifying this demo circuit.

DC3204A supports three operation modes, including pulse-skipping, forced continuous and Burst Mode® operation. The clock frequency and the operation mode are shared by both regulators. User can select desired operation mode with JP3 jumper. Setting JP3 to FC/SYNC position also allows the LTC3314A to sync to a clock frequency from 1MHz to 3MHz, operating in forced continuous mode.

An EMI filter is included in this demo circuit for noise sensitive applications. To power with EMI filter, please apply input voltage via VIN EMI terminal.

reference details image

DC3205A

LTC3314A | 3.3V to 1V 8A, 2MHz Dual-Phase Low Ripple Step-Down DC/DC Regulator

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DC3205A

LTC3314A | 3.3V to 1V 8A, 2MHz Dual-Phase Low Ripple Step-Down DC/DC Regulator

LTC3314A | 3.3V to 1V 8A, 2MHz Dual-Phase Low Ripple Step-Down DC/DC Regulator

Product Detail

Demo circuit 3205A features the LTC3314A, 5V, dual 4A/dual-phase 8A step-down DC/DC regulator IC. This demo circuit is configured as a 2-phase, 2MHz, 3.3V input, single 1V output, 8A buck regulator. The top switches are 180-degree out of phase to reduce the output ripple.

The LTC3314A features dual monolithic synchronous 4A step-down power stages in a 30-ball, 2.2mm × 2.7mm WLCSP package for space saving applications with demanding performance requirements. Both bucks achieve high efficiency and fast transient response with small external components. The LTC3314A can also be configured as a dual output, 4A per output, step-down converter. Please refer to DC3204A as a dual output application example. The LTC3314A data sheet gives a complete description of its operation and application information. The data sheet must be read in conjunction with the demo manual when evaluating or modifying this demo circuit.

DC3205A supports three operation modes, including pulse-skipping, forced continuous and Burst Mode® operation. The clock frequency and the operation mode are shared by both regulators. User can select desired operation mode with JP1 jumper. Setting JP1 to FC/SYNC position also allows the LTC3314A to sync to a clock frequency from 1MHz to 3MHz, operating in forced continuous mode.

An EMI filter is included in this demo circuit for noise sensitive applications. To power with EMI filter, please apply input voltage via VIN EMI terminal.

Tools & Simulations

Tools & Simulations 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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