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reference designLTC3315A

Analog Devices LTC3315A

LTC3315A

Overview

TopologyBuck Converter
Input voltage2.25-5.5 V
Switching frequency3000 kHz
Output 11.8 V / 2 A
Output 21.2 V / 2 A

Description

The LTC®3315A features dual 2A monolithic synchronousstep-down converters operating from a 2.25V to5.5V input supply in one package for space-constrainedapplications with demanding performance requirements.Using constant frequency, peak current mode control atswitching frequencies up to 3MHz with a minimum ontimeas low as 25ns, both bucks achieve high efficiencyand fast transient response in a very small applicationfootprint.

Features

  • Dual Outputs Each with 2A Output Current
  • High Efficiency: 19mΩ NMOS and 75mΩ PMOS
  • Wide Bandwidth, Fast Transient Response
  • Switching Frequency Synchronizable Up to 3MHz
  • VIN Range: 2.25V to 5.5V
  • VOUT Range: 0.5V to VIN
  • VOUT Accuracy: ±1%
  • Low Ripple Burst Mode® Operation
  • Peak Current Mode Control
  • Minimum On-Time: 25ns
  • Safely Tolerates Inductor Saturation in Overload
  • Shutdown Current: 1.2μA
  • Precision 400mV Enable Thresholds
  • Internal Soft-Start and Compensation
  • Power Good Output
  • Low Profile, Thermally Enhanced 12-Lead 2mm × 2mm × 0.74mm LQFN Package

Typical applications

  • Distributed DC Power Systems (POL)
  • Industrial/Automotive/Communications
  • FPGA, ASIC, μP Core Supplies
  • Servers, Telecom Supplies, Optical Networking

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438336010
SPECWE-MAPI SMT Power Inductor, 1 µH, 6.15 A
Simu­lation
Availability
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Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current6.15 A
Saturation Current @ 30%6.5 A
DC Resistance26 mΩ
Self Resonant Frequency67 MHz
Operating Voltage80 V
MountSMT 
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