NCP1423 Datasheet | onsemi

NCP1423, SCV1423 Boost Converter - Sync-Rect, PFM, DC-DC, True-Cutoff, Ring-Killer 400 m A NCP1423 is a monolithic micropower high frequency step- up switching converter IC specially designed for battery operated hand- held electronic products. It integrates Synchronous Rectifier for improving efficiency as well as eliminating the external Schottky Diode. High switching frequency (up to 600 k Hz) allows low profile inductor and output capacitor being used. When the IC is disabled, internal conduction path from LX or BAT to OUT is blocked, OUT pin is isolated from the battery. This achieves True- Cutoff. Ring- Killer is also integrated to eliminate the high frequency ringing in discontinuous conduction mode. Low- Battery Detector, Cycle- by- Cycle Current Limit, Overvoltage Protection and Thermal Shutdown provide value- added Features for various battery operated application. With all of these functions ON, the quiescent supply current is only 9.0 m A. This device is available in pact Micro10 package. Features - High Efficiency: 92% for 3.3 V Output@ 400 m A from 2.5 V Input 87% for 1.8 V Output@ 70 m A from 1.2 V Input - High Switching Frequency, up to 600 k Hz (not hitting current limit) - Low Quiescent Current of 9.0 m A - Low Battery Detector - 0.8 V Startup - External Adjustable Output Voltage - ±1.5% Output Voltage Accuracy - Ring- Killer for Discontinuous Conduction Mode - Thermal Shutdown - 1.2 A Cycle- by- Cycle Current Limit - Output Current up to 400 m A @ VOUT = 3.3 V, 200 m A @ VOUT = 1.8 V - Overvoltage Protection - Low Profile and Minimum External Part - Open Drain Low- Battery Detector Output - pact Micro10 Package - SCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC- Q100 Qualified and PPAP Capable - These Devices are Pb- Free and are Ro HS pliant Typical Applications - Wireless Optical Mouse - Wireless...