HXN-xh是FS2100芯片：
GENERAL DESCRIPTION
The FS2100A/ FS2100C is high efficiency synchronous, PWM step-up DC/DC converters optimized to provide a high efficient solution to medium power systems. The devices work with a 1.4MHz fixed frequency switching. These features minimize overall solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. Automatic PWM/PFM mode switching at light load saves power and improves efficiency.
The PW5200A/ PW5200C is capable of supplying an output voltage between 2.5V and 5V, the internal synchronous switch is desired to provide high efficiency without Schottky.
FEATURES
Up to 94% Efficiency
Shut-down Current: <1μA
Load Current: up to 500mA
Input Voltage：FS2100A: 1V to 4.4V，FS2100C: 2V to 4.4V
Output Voltage: 2.5V to 5V (up to 5V with Schottky)
Low Switch On Resistance RDS(ON), Internal Switch: 0.35Ω
1.4MHz Fixed Frequency Switching
Automatic PWM/PFM Mode Switching
Low Profile SOT-23-6L Package
APPLICATIONS
Digital cameras and MP3
Palmtop computers / PDAs
Cellular phones
Wireless handsets and DSL modems
PC cards
Portable media players
