PJ3406 Description
The PJ3406 is high efficiency synchronous, step-down DC/DC converters working under an input voltage range of 2.5V to 5.5V. This feature makes the PJ3406 suitable for single Li-lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 230µA with no load, and drops to < 1µA in shutdown.The internal synchronous 0.35Ω, 1A switch is desired to increase efficiency without an external Schottky diode. The 1.5 MH·fixed switching frequency allows the
using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint. The PJ3406 regulators are available in the industry standard SOT-23-5 power packages (or upon request).
PJ3406 Features
· Up to 95% Efficiency
· Current mode operation for excellent line and load transient response
· Low quiescent current: 230µA
· Low Switch on Resistance RDS(ON), Internal Switch: 0.35
· Output voltage:5.5V~0.6V
· No Schottky diode required
· Low switch on resistance RDS(ON), Internal switch: 0.35Ω
· 1.5MH·fixed frequency switching
· High switch on current: 1A
· Short-Circuit protection
· Shutdown quiescent current: < 1µA
· Low profile SOT-23-5 package (lead-free packaging is now available)
PJ3406 Application
· Digital cameras and MP3
· Palmtop computers/PDA
· Cellular phones
· Wireless handsets and D
· PC cards
· Portable media players