onsemi NCP1421
NCP1421 is a monolithic micropower high−frequency step−up switching converter IC specially designed for battery−operated hand−held electronic products up to 600 mA loading. It integrates Sync−Rect to improve efficiency and to eliminate the external Schottky Diode. When the device is disabled, the internal conduction path from LX or BAT to OUT is fully blocked and the OUT pin is isolated from the battery.| Part No. | NCP1421 |
|---|---|
| Datasheet | NCP1421 Download |
| Manufacturer |  onsemi |
| Description | Boost Converter |
| Buy | Stock & Price |
FEATURES
● High Efficiency: 94% for 3.3 V Output at 200 mA from 2.5 V Input 88% for 3.3 V Output at 500 mA from 2.5 V Input● High Switching Frequency, up to 1.2 MHz (not hitting current limit)
● Output Current up to 600 mA at VIN = 2.5 V and VOUT = 3.3 V
● True−Cutoff Function Reduces Device Shutdown Current to typically 50 nA
● Anti−Ringing Ring−Killer for Discontinuous Conduction Mode
● High Accuracy Reference Output, 1.20 V $1.5%, can Supply 2.5 mA Loading Current when VOUT > 3.3 V
● Low Quiescent Current of 8.5 mA
● Integrated Low−Battery Detector
● Open Drain Low−Battery Detector Output
● 1.0 V Startup at No Load Guaranteed
● Output Voltage from 1.5 V to 5.0 V Adjustable
● 1.5 A Cycle−by−Cycle Current Limit
● Multi−function Logic−Controlled Shutdown Pin
● On Chip Thermal Shutdown with Hysteresis
● Pb−Free Package is Available Typical
APPLICATIONS
● Personal Digital Assistants (PDA)● Handheld Digital Audio Products
● Camcorders and Digital Still Cameras
● Hand−held Instruments
●...
