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IC-Hersteller Silicontent Technology

Silicontent Technology SCT2431

3.8V-40V Vin, 3.5A, High Efficiency Synchronous Step-down DCDC Converter with Programmable Soft-start

Details

TopologieAbwärtswandler
Eingangsspannung3.8-40 V
Schaltfrequenz510-630 kHz
Ausgang 13.5 A
IC-Revision1.1

Beschreibung

The SCT2431 is 3.5A synchronous buck converters with wide input voltage, ranging from 3.8V to 40V, which integrates an 80mΩ high-side MOSFET and a 50mΩ low-side MOSFET. The SCT2431, adopting the peak current mode control, supports the Pulse Skipping Modulation (PSM) with typical 25uA low quiescent current which assists the converter on achieving high efficiency at light load or standby condition.The SCT2431 features programmable soft start time with 570kHz switching frequency. The converter allows power conversion from high input voltage to low output voltage with a minimum 100ns on-time of high-side MOSFET. It also supports Low Drop-Out LDO operation at low voltage difference from input to output condition. The SCT2431 is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT2431 features Frequency Spread Spectrum FSS with ±6% jittering span of the 570kHz switching frequency and modulation rate 1/512 of switching frequency to reduce the conducted EMI.

Eigenschaften

  • Wide Input Range: 3.8V-40V
  • Up to 3.5A Continuous Output Current
  • 0.8V ±1% Feedback Reference Voltage
  • Integrated 80mΩ High-Side and 50mΩ Low-Side Power MOSFETs
  • Pulse Skipping Mode (PSM) with 25uA Quiescent Current in Sleep Mode
  • 100ns Minimum On-time
  • Programmable Soft-start Time
  • Frequency Spread Spectrum (FSS) Modulation for EMI Reduction
  • Precision Enable Threshold for Programmable Input Voltage Under-voltage Lock Out Protection (UVLO) Threshold and Hysteresis
  • Low Dropout Mode Operation
  • Derivable Inverting Voltage Regulator
  • Over-voltage and Over-Temperature Protection
  • Available in an ESOP-8 Package

Typische Anwendungen

  • Optical Communication and Networking System
  • Automotive System
  • LCD Display
  • Battery Pack Powered System - Cordless Power Tools, Cordless Home Appliance, Drone, Aero Modeling, GPS Tracker etc., Cigarette Lighter Adapters, Chargers, Industrial and Medical Distributed Power Supplies, USB Type-C Power Delivery, USB Charging

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IRP,40K
(A)
LR
(µH)
ISAT,10%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Muster
744325550SPEC
8 Dateien WE-HCI SMT-Hochstrominduktivität 5.5 12 4.3 4.5 10.3 30 Superflux SMT
Artikel Nr. Daten­blatt Simu­lation
744325550SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IRP,40K
(A)
LR
(µH)
ISAT,10%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Muster