Switching Power Supply Switching Power Supply

DC-DC Buck Converter

DC-DC Buck Converter
SCT2432CQSTER Pre-release
3.8V-40V Vin, 2A, High Efficiency Synchronous Step-down DCDC Converter with Internal Compensation
SCT2432CQSTER
  • Product Introduction
  • Technical data
  • Parameter comparison

Product Features

FEATURES:

• Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade 1: -40°C to 125°C
Ambient Operating Temperature Range
• Wide Input Range: 3.8V-40V
• Up to 3A Continuous Output Current
• 0.8V ±1.5% Feedback Reference Voltage
• Integrated 160mΩ High-Side and 80mΩ Low-Side Power MOSFETs
• Pulse Skipping Mode (PSM) with 25uA Quiescent Current in Sleep Mode
• 80ns Minimum On-time
• Programmable Soft-start Time
• Adjustable Frequency 300KHz to 1.2MHz
• External Clock Synchronization
• 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-8L Package
 
DESCRIPTION:
 
The SCT2432CQ is 3A synchronous buck converters with wide input voltage, ranging from 3.8V to 40V, which integrates an 160mΩ high-side MOSFET and an 80mΩ low-side MOSFET. The SCT2432CQ, 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 SCT2432CQ features programmable the soft-start time together with the programmable switching frequency from 300 kHz to 1.2 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The converter supports external clock synchronization with a
frequency band from 300kHz to 1.2MHz. The SCT2432CQ allows power conversion from high input voltage to low output voltage with a minimum 80ns ontime of high-side MOSFET. The SCT2432CQ is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT2432CQ features Frequency Spread Spectrum FSS with ±6% jittering span of the switching frequency and modulation rate 1/512 of switching frequency to reduce the conducted EMI. The SCT2432CQ offers cycle-by-cycle current limit and hiccup over current protection, thermal shutdown protection, output over-voltage protection and input voltage under-voltage protection. The device is available in an 8-pin thermally enhanced SOP-8 package.


APPLICATIONS:

• Automotive System
• Industrial and Medical Distributed Power Supplies
• Optical Communication and Networking System

Package information

SCT2432CQSTER
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Technical data

Title Time Download
SCT2432CQ Datasheet Rev 0.81 2026-06-12 Download

Parameter comparison

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40V DC-DC Buck Converter DC-DC Buck Converter
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40V DC-DC Buck Converter DC-DC Buck Converter
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