ON Semiconductor Corp. (Phoenix, AZ) introduced its new NCP1501 voltage regulator, the second device in a series of dual-mode, pulse-width modulation (PWM), buck converters that feature a low dropout (LDO) mode. The new device is suitable for the power management of portable applications, including cellular phones, PDAs, digital cameras, and supplies for digital signal processor cores.
The NCP1501 will supply up to 300mA to the load; in PWM mode, it accepts a synchronization clock signal between 500kHz and 1,000kHz; and the device offers built-in synchronous rectification providing high efficiency (up to 92.5%) for medium to high loads. The NCP1501 features input voltage range of 2.7V to 5.2V (the device is able to operate directly from a one-cell, lithium-ion battery or a three-cell, nickel-metal hydride battery); a shutdown pin and digitally programmable voltage selection that enables designers to set the output voltage to 1.05V, 1.35V, 1.57V or 1.8V; and a quiescent current of 0.2µA.
The NCP1501 is offered in a space-saving 3mm x 5mm Micro-8 package. It is priced at $1.10 per unit in 4,000-unit quantities.
