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reference designSC81480Q | Demoboard SC81480Q_EVM

Southchip SC81480Q | Demoboard SC81480Q_EVM

36V/8A, Automotive Low IQ Buck Converter

Overview

TopologyBuck Converter
Input voltage3-36 V
Switching frequency200-2200 kHz
Output 15 V / 8 A
IC revisionV1.0.0

Description

The SC81480Q is a synchronous Buck converter family with a wide input voltage from 3V to 36V. The SC81480Q regulates the output voltage at customized voltage by setting the divider resistors. It provides up to 8A of highly efficient output current with current mode control with fast loop response. The SC81480Q is specifically designed for automotive applications. The device incorporates spread spectrum, QFN package, symmetrical pinout to optimize the EMI performance. Up to 2.2MHz switching frequency could help avoid noise sensitive frequency. The SC81480Q employs peak current mode control scheme. The switching frequency could be synchronized to an external clock. The SC81480Q offers output over-voltage protection, cycle-by-cycle peak current limit, output short circuit protection, and thermal shutdown protection. The SC81480Q is available in 14-pin 4mm X 3.5mm QFN package.

Features

  • AEC-Q100 qualified for automotive applications:
  • Temperature grade 1: TA range: -40°C to 125 °C
  • 3.5V to 36V start up input voltage, support 3.0V falling VIN
  • 2.5µA sleep mode quiescent current
  • 200kHz to 2200kHz adjustable frequency, synchronized to external clock
  • Adjustable output voltage through FB pin
  • Frequency spread spectrum for low EMI
  • Symmetric VIN pinout for low EMI
  • Selectable option for PFM or FPWM mode
  • Output OCL / SCP / OVP / TSD protection
  • Pin-to-Pin compatible with
  • SC81440Q (Automotive, 36V/4A, adjustable FSW)
  • SC81460Q (Automotive, 36V/6A, adjustable FSW)
  • SC81440 (Industrial, 36V/4A, adjustable FSW)
  • SC81460 (Industrial, 36V/6A, adjustable FSW)
  • SC81480 (Industrial, 36V/8A, adjustable FSW)

Typical applications

  • Automotive infotainment and cluster, Automotive head unit, Automotive ADAS

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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74439358047
SPECWE-XHMI SMT Power Inductor, 4.7 µH, 13.35 A
Simu­lation
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-XHMI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current13.35 A
Saturation Current @ 30%16.65 A
DC Resistance8.65 mΩ
DC Resistance9.51 mΩ
Self Resonant Frequency22 MHz
MountSMT 
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