SGM2557数据手册SGMICRO中文资料规格书

描述 Description

The SGM2557 is a dual-channel power distribution switch. The switch operates from a wide range of 2.7V to 5.5V supply voltage, and is controlled by the ENx pin. It can be used in USB power distribution applications.

A 90mΩ low RON N-MOSFET is integrated. The small size and quiescent current make the device very suitable for space limited, battery-powered applications.

A number of protection features are provided in the device including soft-start, current limit and thermal shutdown. The internal reverse-voltage function will protect devices on the input side of the switch. Fault conditions are indicated by the FAULTx pin. Transient faults are filtered internally.

When a fault is detected, the device will go into auto-retry mode.

The SGM2557 is available in Green SOIC-8 and TDFN-3×3-8L packages. It is rated over the -40℃ to +85℃ temperature range.

特性 Features

• Input Voltage Range: 2.7V to 5.5V
• High-side MOSFET Switch
• On-Resistance: 90mΩ (TYP)
• 1.1A Current Limit
• Quiescent Current: 28μA (Dual-Channel)
• 1.8V Logic-Controlled Inputs
• Full Set of ProtectionsSoft-StartUnder-Voltage Lockout for VINNo Reversed Leakage CurrentShort-Circuit ProtectionThermally Isolated ChannelsFault Indication with 4ms Filter
• Available in Green SOIC-8 and TDFN-3×3-8L Packages

应用 Application

• Hot-Plug Power Supply
• Motherboard USB Power Switch
• Accessories
• Portable Medical Equipment