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reference designLTC3308A

Analog Devices LTC3308A

5V, 4A Synchronous Step-Down Silent Switcher in 2mm x 2mm LQFN

Overview

TopologyBuck Converter
Input voltage2.2-5.5 V
Output 13.3 V / 4 A

Description

The LTC®3308A is a very small, high efficiency, low noise, monolithic synchronous 4A 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
  • Safely Tolerates Inductor Saturation in Overload
  • VIN Range: 2.25V to 5.5V
  • VOUT Range: 0.5V to VIN
  • VOUT Accuracy: ±1% Over Temperature Range
  • Precision 400mV Enable Threshold
  • Shutdown Current: 1μA
  • Power Good, Internal Compensation and Soft Start
  • Thermally Enhanced 2mm × 2mm LQFN Package
  • AEC-Q100 Qualified for Automotive Applications

Typical applications

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

More information

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Data­sheet
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Product series
L(µH)
IR(A)
ISAT(A)
RDC(mΩ)
fres(MHz)
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744040240016
SPECWE-LQS SMT Power Inductor, 0.16 µH, 3.7 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
Inductance0.16 µH
Rated Current3.7 A
Saturation Current7 A
DC Resistance16 mΩ
Self Resonant Frequency644 MHz
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