IC manufacturers Analog Devices

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Analog Devices LTC3315A

LTC3315A

Overview

TopologyBuck Converter
Input voltage3.3 V
Switching frequency3000 kHz
Output 10.8 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

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionIRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
VOP
(V)
Mount Samples
744383360033SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-MAPI SMT Power Inductor 0.33 5.5 17 140 SMT 8.7 10.5 14 80 SMT
744383360047SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-MAPI SMT Power Inductor 0.47 4.8 22 99 SMT 7.55 9.8 18 80 SMT
74479299147SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-PMCI Power Molded Chip Inductor 0.47 11.05 5.15 9.95 22 90 High Saturation Current 11.05 18 SMT
Order Code Data­sheet Simu­lation
744383360033SPEC
744383360047SPEC
74479299147SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
VersionIRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
VOP
(V)
Mount Samples