HX1002裕鼎祥咨询电话：139 2843 4054
HX1002 Description
The HX1002 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 HX1002 suitable for single Li-lon battery-powered applications. Automatic PWM/PFM mode switching saves power at light load. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 230ΩA with no load, and drops to < 1ΩA 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 HX1002 converters are available in the industry standard SOT-23-5 power packages (or upon request).
HX1002 FEATURES
·Up to 95% Efficiency
·Current mode operation for excellent line and load transient response
·Low quiescent current: 230ΩA
·Low Switch on Resistance RDS(ON), Internal Switch: 0.35Ω
·Output voltage：5.5V~0.6V
·Automatic PWM/PFM mode switching
·No Schottky diode required
·1.4MHz fixed frequency switching
·Short-Circuit protection
·Shutdown quiescent current: < 1ΩA
·Low profile SOT-23-5 package (lead-free packaging is now available)
HX1002 APPLICATION
·Digital cameras and MP3
·Palmtop computers / PDAs
·Cellular phones
·Wireless handsets and DSL modems
·PC cards
·Portable media players
