High power DC/DC boost converter for space-constrained applications

Operating from an input range of 2.7 to 5.5V, this DC/DC boost converter features an output voltage which can be set from VIN + 0.5V up to 18V. A hysteretic current mode control circuit simplifies system design by eliminating the need for external compensation. A high 2MHz switching frequency enables the use of extremely small and low-profile external components and allows designers to build total solutions that consume less PCB area.

To help minimise leakage current common on boost converters, the AAT1210 features an innovative True Load Disconnect function that isolates the load from the power source when the device is turned off. This feature helps the AAT1210 achieve ultra-low sleep mode current consumption without the use of an external MOSFET. In general, the AAT1210 achieves power efficiency levels up to 90% over a wide load range.

The AAT1210 supplies a fixed output voltage that is set using an external resistor divider. As an option, it also offers dynamic voltage scaling in which the output may be adjusted dynamically across a 2.0x range using AnalogicTech’s patented single-wire S2Cwire™ (Simple Serial Control) interface.
To ensure reliability, the AAT1210 adds a number of safety features including cycle-by-cycle current limit, integrated soft start, short-circuit and over-temperature protection. The AAT1210 is specified over the -40 to +85 degrees C temperature range. It is available in a Pb-free, thermally-enhanced, 16-pin TDFN34 package.