AAT1232

AAT1232 24V 100mA Step-Up Converter General Description The AAT1232 is a high frequency, high efficiency boost converter capable of 24V maximum output voltage. The internal power switch can deliver 100mA load current. It is the ideal power solution to power OLED, LCD, and CCD applications operating from a single cell lithium-ion battery. The high switching frequency (up to 2MHz) provides fast response to load transients with small external components. The fully integrated control IC simplifies the design while reducing the total PCB footprint. The AAT1232 offers a true load disconnect feature which isolates the load from the power source when EN/SET is pulled low. This eliminates leakage current and maintains zero voltage at the output while disabled. The output voltage can be dynamically set by activating one of two reference levels (FB1 or FB2) through the SEL logic pin. Optionally, AnalogicTech’s Simple Serial Control™ (S2Cwire™) interface provides dynamic programmability across a wide output voltage range through the EN/SET pin. The AAT1232 is available in a Pb-free, thermallyenhanced 16-pin 3x4mm TDFN low-profile package or a Pb-free 12-pin TSOPJW package. Features • • • • • SwitchReg™ • • • • • • • • • • VIN Range: 2.7V to 5.5V Maximum Output: 24V @ 100mA True Load Disconnect Dynamic Voltage Control Options Hysteretic Control — No External Compensation Components — Excellent Load Transient Response — High Efficiency at Light Load Up to 2MHz Switching Frequency Ultra-Small Inductor and Capacitors Integrated Low RDS(ON) MOSFET Switches Up to 85% Efficiency