Intersil Corporation has introduced a family of DC/DC boost converters for single-cell Li-Ion powered products incorporating USB ‘on-the-go’ (OTG) capability.
Available with either a 5V fixed output voltage or an adjustable output, the ISL9113 is a fully-integrated synchronous boost converter that delivers current density of 460mA/mm2. Integrated 1.3A rated synchronous MOSFETs can deliver 5V at 500mA from a single-cell Li-ion battery. This capability is often required to power external peripherals attached to a smartphone’s or tablet’s USB port.
1.8MHz switching frequency permits use of tiny, low-profile inductor and capacitors
Low resistance MOSFETs deliver up to 95% efficiency to maximize battery life
20uA quiescent current delivers excellent efficiency under light load conditions
Available in a tiny 0.8mm x 1.36mm WLCSP package or 2mm x 2mm DFN package
Pricing and Availability:
The ISL9113 is available now in a compact 2mm x 2mm 8-lead DFN package and a 0.8mm x 1.36mm 6-bump WLSCP. Pricing starts at $1.39 each in 6,000-piece quantities. The ISL9111 and ISL9111A are available in a 6-lead SOT-23 package with prices starting at $1.20 each in 3,000-piece quantities.