Onsemi NCP1593B

Description

The NCP1593 is a fixed 1 MHz, high−output−current, synchronous PWM converter that integrates a low−resistance, high−side P−channel MOSFET and a low−side N−channel MOSFET. The NCP1593 utilizes internally compensated current mode control to provide good transient response, ease of implementation and excellent loop stability. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.6 V and is able to supply up to 3 A of load current.The NCP1593 includes an internally fixed switching frequency (FSW), and an internal soft−start to limit inrush current. Other features include cycle−by−cycle current limiting, 100% duty cycle operation, short− circuit protection, power saving mode and thermal shutdown.

Features

• Wide Input Voltage Range: from 4.0 V to 5.5 V
• Internal 90 m High−Side P−Channel MOSFET and 60ΩmLow−Side N−Channel MOSFET
• Fixed 1 MHz Switching Frequency
• Cycle−by−Cycle Current Limiting
• Hiccup Mode Short−Circuit Protection
• Overtemperature Protection
• Internal Soft−Start
• Start−up with Pre−Biased Output Load
• Adjustable Output Voltage Down to 0.6 V
• Diode Emulation During Light Load
• 100% Duty Cycle Operation to Extend the Battery Life
• These are Pb−Free Devices

Typical applications

• USB Modems
• Cable Modems
• LCD Monitors and TVs
• DVD Drives and HDD
• Telecom/Networking/Datacom Equipment
• Set−Top Boxes

More information

• Datasheet
• IC product information