莉诚科技

Licheng Technology

网站首页 ※ 中国品牌（Chinese brand） ※ SOUTHCHIP / 上海南芯 ※ SC81340SQFBR
您所在的位置：
  • SC81340SQFBR

  • SC81340SQFBR

    Descriptions
    SC81340S is a high-efficiency synchronous buck converter
    with few external components and is easy to use in compact
    applications. The device operates with input voltages from
    4.5V to 24V with a typical switching frequency of 500kHz. It
    integrates power MOSFETs and can support up to 4A
    continuous output current.
    The device adopts a constant on-time control mode with
    internal compensation, which features excellent load
    transient performance and supports low equivalent series
    resistance output capacitors such as ceramic (MLCC)
    capacitors. It can operate in the 100% duty cycle to offer a
    low input-to-output voltage differential when the VIN equals
    VOUT.
    The device also features low quiescent current and PSM
    mode operation to maximum efficiency at light load. With
    PSM mode and low quiescent current during standby or light
    load, the device can further prolong battery life and is
    suitable for battery-powered applications.
    SC81340S provides protections, including input undervoltage
    protection, cycle-by-cycle peak current limitation,
    and thermal shutdown protection with auto-recovery.
    SC81340S is available in QFN-11(2mmx2mm) Package. 

    • 0.00
      0.00
商品描述

Descriptions
SC81340S is a high-efficiency synchronous buck converter
with few external components and is easy to use in compact
applications. The device operates with input voltages from
4.5V to 24V with a typical switching frequency of 500kHz. It
integrates power MOSFETs and can support up to 4A
continuous output current.
The device adopts a constant on-time control mode with
internal compensation, which features excellent load
transient performance and supports low equivalent series
resistance output capacitors such as ceramic (MLCC)
capacitors. It can operate in the 100% duty cycle to offer a
low input-to-output voltage differential when the VIN equals
VOUT.
The device also features low quiescent current and PSM
mode operation to maximum efficiency at light load. With
PSM mode and low quiescent current during standby or light
load, the device can further prolong battery life and is
suitable for battery-powered applications.
SC81340S provides protections, including input undervoltage
protection, cycle-by-cycle peak current limitation,
and thermal shutdown protection with auto-recovery.
SC81340S is available in QFN-11(2mmx2mm) Package. 

Features 

•4.5~24V Input Voltage Range, 28V sustainable 

• 0.6V Reference with ±1% Accuracy 

• Max 4A Continuous Output Current 

• Power Save Mode 

• Low Quiescent Current 

• Integrated 29mΩ/13mΩ MOSFET 

• Low Dropout Mode with Almost 100% Duty Cycle 

• 500K Switching Frequency 

• COT with Fast Load Transient Performance 

• Internal Soft Start 

• Power Good Pin 

• Cycle-by-Cycle Valley and Peak Current Limit 

• Output Discharge via SW pin 

• Short Circuit Protection with Hiccup Mode 

• Input OVP 

• ULVO, OUTOVP, TSD Protection (Non-Latch) 

• QFN2X2 Package Available 

3 Applications 

• Flat Panel Television and Monitors 

• Set-Top Boxes 

• HUB 

• Portable Devices