* Package: SOT-23-5
* DC/DC Converter
* Input voltage: 2.5V ~ 5.5V
* Output voltage:5.5V ~ 0.6V
The 3406 is high efficiency synchronous, PWM step-down DC/DC converters working under an input voltage range of 2.5V to 5.5V. This feature makes the 3406 suitable for single Li-lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 200uA with no load, and drops to < 1uA in shutdown.
The internal synchronous switch is desired to increase efficiency without an external Schottky diode. The 1.4 MHz fixed switching frequency allows the using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint.
The 3406 converters are available in the industry standard SOT-23-5 power packages (or upon request).
Up to 95% Efficiency
Current mode operation for excellent line and load transient response
Low quiescent current: 230uA
Low Switch on Resistance RDS(ON), Internal Switch: 0.35 Ω
Automatic PWM/PFM mode switching
No Schottky diode required.
1.4MHz fixed frequency switching
Shutdown quiescent current:< 1uA
Low profile SOT-23-5 package (lead-free
Digital cameras and MP3
Palmtop computers / PDAs
Wireless handsets and DSL modems
Portable media players