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.