SGM40658数据手册SGMICRO中文资料规格书

描述 Description

The SGM40657/8 over-voltage protection devices feature a low 20mΩ (TYP) RON internal FET and protect low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to +120V. When the input voltage exceeds the over-voltage threshold, the internal FET is turned off to prevent damage to the protected downstream components. The over-voltage protection threshold can be adjusted with optional external resistors to any voltage between 4V and 20V. If the OVLO input is below the external OVLO select voltage, the SGM40657/8 automatically choose the internal trip thresholds. The internal over-voltage thresholds (VIN_OVLO) are preset to be 6.82V/5.95V typical (SGM40657/8). The devices feature an open-drain ACOK output indicating a stable supply between minimum supply voltage and VOVLO. The SGM40657/8 are also protected against over-current events by an internal thermal shutdown. The SGM40657/8 are available in Green 12-Ball CSP package and operate over an ambient temperature range of -40℃ to +85℃.

特性 Features

● Protect High-Power Portable Devices
 Wide Operating Input Voltage Protection from 2.5V to 28V
 Integrated 20mΩ (TYP) N-Channel MOSFET Switch
● Flexible Over-Voltage Protection Design
 Adjustable Over-Voltage Protection Trip Level
 Wide Adjustable OVLO Threshold Range from 4V to 20V
 Internal Preset OVLO Thresholds:
6.82V (SGM40657)
5.95V (SGM40658)
● Additional Protection Features Increase System Reliability
 Surge Immunity up to +120V
 Soft-Start to Minimize In-Rush Current
 Internal 15ms Startup Debounce
 Thermal Shutdown Protection
● Enable Function
● -40℃ to +85℃ Operating Temperature Range
● Available in Green WLCSP-1.31×1.84-12B Package

应用 Application

Smart Phones
Tablet PCs
Mobile Internet Devices