SQ27403中文资料High Efficiency Fast Response, 3.5A, 40V Input Synchronous Step Down Regulator数据手册Silergy规格书

描述 Description

The SQ27403 develops a high efficiency synchronous step-down DC/DC converter capable of delivering 3.5A load current. The SQ27403 operates over a wide input voltage range from 4.2V to 40V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

The SQ27403 adopts peak current control scheme. The switching frequency is adjustable from 300kHz to 2.2MHz using an external resistor. The device also features ultra low quiescent operating to achieve high efficiency under light load. And the internal soft-start limits inrush current during power on.

特性 Features

• Low RDS(ON) for Internal Switches (Top/Bottom): 115/80mΩ
• 4.2-40V Input Voltage Range
• Internal Compensation
• Internal 1ms Soft-start Limits the Inrush Current
• Adjustable Switching Frequency Range: 300kHz to 2.2MHz
• 3.5A Output Current Capability
• ±1% 0.6V Reference
• Cycle-by-cycle Peak Current Limitation
• Short Circuit Protection
• Thermal Shutdown and Auto Recovery
• RoHS Compliant and Halogen Free
• Compact Package: SO8E

应用 Application

• Automotive
• Industrial
• High-Voltage DC/DC Converters