The 25 year old Austriamicrosystems is a leading designer/manufacturer of low power high accuracy analog ICs for customized industry applications. Its latest addition to its list of products is the new inductorless DC-DC boost converter named AS1302 which has the following distinctive features.

It gives low noise, constant frequency and low input/output ripple performance for both light and heavy loads. Due to its high switching frequency it only needs two 220nF flying caps and two 2.2µ bypass capacitors which, along with the small WL-CSP-8 package are responsible for the AS1302s compact size, making it suitable for applications with acute space constraints.

The AS1302 delivers a regulated output which makes it ideal for applications such as 2-3 AA cells alkaline/NiMH or 1 cell Li-Ion battery to 5V boost conversion in portable devices. It gives a remarkable efficiency of 99% in the 1:1 mode, with the efficiency dropping to only 90% in the 1:2 or 2:3 modes. It also provides features of low quiescent current and 10nA shutdown mode where the output is fully disconnected from the input.

The non requirement of big inductors for generating desired voltage is advantageous in reducing the electromagnetic emissions that might have otherwise influenced the application.

Excessive startup current inflow problem is tackled by offering a soft-start feature and other features such as thermal shutdown circuitry and overload protection.
The AS1302 is 1.2x1.2mm WL-CSP 8 bump package suitable for working temperatures in the range -40 to +85°C.

Read more: http://www.austriamicrosystems.com/eng/Products/Power-Management/DC-DC-S...