Integrated Power Management Solution Targets USB Peripherals

The new CMPWR160 IC provides an integrated power management solution targeting universal serial bus (USB) peripherals and other hot-insertion equipment. The device combines a low-dropout regulator (LDO) with a power-on-reset (POR) pulse generator. To meet the specifications requirements of both USB 1.0 and 2.0, the IC draws a quiescent current of just 35µA, while delivering up to 500 mA of load current at a fixed 3.3V output. The LDO is implemented using the company's SmartOR technology to provide a glitch-free regulated output. A shutdown feature can force the regulator to be powered down on demand while drawing only 7µA of current. When in shutdown mode, the POR circuitry will remain active, making the device suitable for systems that contain back-up or alternative power sources.
Typical applications for the device are self- or bus-powered peripherals such as keyboards, digital cameras, storage devices, audio speakers, microphones, and joysticks. Pricing for the CMPWR160 is set at $0.84 each/10,000.