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reference designLTC3307

Analog Devices LTC3307

5V, 3A Synchronous Step-Down Silent Switcher in 2mm x 2mm LQFN

Overview

TopologyBuck Converter
Input voltage2.25-5.5 V
Switching frequency3000 kHz
Output 11.2 V / 3 A

Description

The LTC®3307A is a very small, high efficiency, low noise, monolithic synchronous 3A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. Using constant frequency, peak current mode control at switching frequencies up to 3MHz and minimum on-time as low as 22ns, this regulator achieves fast transient response with small external components. Silent Switcher architecture minimizes EMI emissions.

Features

  • High Efficiency: 8mΩ NMOS, 31mΩ PMOS
  • Programmable Frequency to 3MHz
  • Tiny Inductor and Capacitors
  • Peak Current Mode Control
  • 22ns Minimum On-Time
  • Wide Bandwidth, Fast Transient Response
  • Silent Switcher™ Architecture
  • Ultralow EMI Emissions
  • Low Ripple Burst Mode® Operation with IQ of 40μA

Typical applications

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

More information

Parts approved by Analog Devices

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
IR(A)
ISAT(A)
RDC(mΩ)
SamplesAvailability & Sample
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744040240016
SPECWE-LQS SMT Power Inductor, 0.16 µH, –
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
Inductance0.16 µH
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Self Resonant Frequency644 MHz
Rated Current3.7 A
Saturation Current7 A
DC Resistance16 mΩ
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74479276124
SPECWE-PMCI Power Molded Chip Inductor, 0.24 µH, 6.9 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PMCI Power Molded Chip Inductor
Inductance0.24 µH
Performance Rated Current6.9 A
Saturation Current @ 10%2.8 A
Saturation Current @ 30%6.7 A
DC Resistance21 mΩ
Self Resonant Frequency280 MHz
Rated Current6.9 A
Saturation Current5.4 A
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74479276147
SPECWE-PMCI Power Molded Chip Inductor, 0.47 µH, 5.4 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PMCI Power Molded Chip Inductor
Inductance0.47 µH
Performance Rated Current5.4 A
Saturation Current @ 10%2.95 A
Saturation Current @ 30%6.3 A
DC Resistance30 mΩ
Self Resonant Frequency165 MHz
Rated Current5.4 A
Saturation Current4.2 A
–
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74479287147
SPECWE-PMCI Power Molded Chip Inductor, 0.47 µH, 5.75 A
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PMCI Power Molded Chip Inductor
Inductance0.47 µH
Performance Rated Current5.75 A
Saturation Current @ 10%3.6 A
Saturation Current @ 30%7.4 A
DC Resistance29 mΩ
Self Resonant Frequency150 MHz
Rated Current7.35 A
Saturation Current5 A
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