IC manufacturers Analog Devices

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Analog Devices LT8336

40V, 2.5A, Low IQ Synchronous Step-Up Silent Switcher

Overview

TopologyBoost Converter
Input voltage8-16 V
Switching frequency300-3000 kHz
Output 124 V / 1.2 A
Output 224 V / 0.6 A

Description

The LT8336 is a low IQ, synchronous step-up DC/DC converter. It features Silent Switcher architecture and optional spread spectrum frequency modulation to minimize EMI emissions while delivering high efficiencies at high switching frequencies.The wide input/output voltage range, low VIN pin quiescent current in Burst Mode operation, and 100% duty cycle capability for the synchronous MOSFET in passthrough operation (VIN ≥ VOUT), make the LT8336 ideally suited for general purpose step-up and automotive preboost applications.The LT8336 integrates 40V, 2.5A power switches, operating at a fixed switching frequency programmable between 300kHz and 3MHz and synchronizable to an external clock. Pulse-skipping or Burst Mode operation can be selected, with or without spread-spectrum frequency modulation, to optimize efficiency and EMI performance.The LT8336 features output soft-start, an output power good flag and output overvoltage lockout.

Features

  • Silent Switcher® Architecture
  • Ultralow EMI Emissions
  • Optional Spread Spectrum Frequency Modulation
  • Integrated 40V, 2.5A Power Switches
  • Wide Input/Output Voltage Range: 2.7V to 40V
  • Low VIN Pin Quiescent Current:
  • 0.3µA in Shutdown
  • 4µA in Burst Mode® Operation
  • 15µA in Pass Through (VIN > VOUT)
  • 100% Duty Cycle Capability for Synchronous MOSFET
  • Adjustable and Synchronizable: 300kHz to 3MHz
  • Pulse-Skipping or Burst Mode Operation at Light Load
  • Output Soft-Start and Power Good Monitor
  • Internal Compensation
  • Accurate 1V Enable Pin Threshold
  • Small 16-Lead (3mm × 3mm) LQFN Package
  • AEC-Q100 Qualification in Progress

Typical applications

  • Automotive and Industrial Power Supplies / General Purpose Step-Up

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
fres
(MHz)
VersionZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(mΩ)
Type Samples
74479299147SPEC
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 90 High Saturation Current 3600 22
742792040SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 1.5 SMT 600 700 150 MHz 2000 150 High Current
Order Code Data­sheet Simu­lation
74479299147SPEC
742792040SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
fres
(MHz)
VersionZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(mΩ)
Type Samples