AAT4674 Power Supply Selector Switch

The AAT4674-1 is a member of Skyworks' Application Specific Power Management SmartSwitch™ family. This device is a dual input single output power supply selector switche designed to operate from batteries, or any other power supply with an input voltage up to 6V. The AAT4674-1 connects the supply voltage on IN1 to OUT, or IN2 to OUT, through a very low RDS(ON) power MOSFET that minimizes voltage drops and power dissipation. The enable (EN) and select (SEL) pin voltages control the operational state of the internal power MOSFET switches. Once enabled, the SEL pin will switch between the IN1 and IN2 inputs. If both input voltages are below the UVLO, then the AAT467-1 output floats. If one of the input voltages is above the UVLO threshold then that input voltage that is above the UVLO threshold is passed through to the output. The two power switches are current limited and the current limit thresholds can be programmed through the resistors on IIN1 and IIN2 pins respectively. The AAT4674-1 is available in the thermally enhanced, space-saving Pb-free 12-pin TSOPJW package. The 4674- 1 is specified for operation over the -40°C to +85°C temperature range.

技术特性

Input Voltage Supply Range: 2.5V to 6V
High Level of Integration:
Reverse Blocking Diode
Current Sensing
Programmable Current Limit
Single Control Pin Switching
Break-Before-Make Switch-Over
Minimum Output Voltage Drop During Change-Over
Shutdown Current < 1μA
Thermal Protection
TSOPJW-12 Package

订购信息 Ordering Information

AAT4674

应用领域 APPLICATION

Bluetooth™ Headsets
Cell Phones
Digital Still Cameras
MP3 Players
Personal Data Assistants (PDAs)
Set Top Boxes

AAT4674 典型应用

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AAT4674 数据资料DataSheet下载:pdf	Rev.V2	2 页