1FEATURES

2• Input Voltage of 2.8V to 5.3V

• 0.5A Maximum Switch Current

• 0.4Ω Typical Total On-Resistance

• Load Detection

• Enable/Disable

• Switch On Indicator

• Peak Current Limit

• Thermal Shutdown

• 6-bump Thin DSBGA Package

APPLICATIONS

• Handsets, Tablets, Notebooks

• Portable Devices

DESCRIPTION

The LM34904 is a 0.5A PFET switch used to control

the input voltage of electronic devices. It is easily

integrated into system designs that have a 2.8V to

5.3V voltage rail. Besides the 0.4Ω PFET switch, the

LM34904 can be enabled or disabled by a logic

signal. The IC monitors the presence of a downstream electronic device via a dedicated pin to

decide whether to turn on the PFET switch. A power

good signal generated by the IC can be used by

system control to determine the status of the switch.

The LM34904 also provides over-current and over-

temperature protection. The IC comes in a tiny 6-

bump thin DSBGA package.