Descriptions
SC81380 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
4V to 24V with a typical switching frequency of 700kHz. It
integrates power MOSFETs and can support up to 8A
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.
SC81380 provides protections, including input under-
voltage protection, cycle-by-cycle peak current limitation,
and thermal shutdown protection with auto-recovery.
SC81380

Features
• 4~24V Input Voltage Range
• 0.6V Reference with ±1% Accuracy
• Max 8A Continuous Output Current
• Power Save Mode
• Low Quiescent Current
• Integrated 26mΩ/10mΩ MOSFET
• Low Dropout Mode with Almost 100% Duty Cycle
• 700K 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

Features

• 4~24V Input Voltage Range

• 0.6V Reference with ±1% Accuracy

• Max 8A Continuous Output Current

• Power Save Mode

• Low Quiescent Current

• Integrated 26mΩ/10mΩ MOSFET

• Low Dropout Mode with Almost 100% Duty Cycle

• 700K 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

Applications
• Flat Panel Television and Monitors
• Set-Top Boxes
• HUB
• Portable Devices

Applications

• Flat Panel Television and Monitors

• Set-Top Boxes

• HUB

• Portable Devices