MAX5088

19-3944; Rev 1; 5/06 KIT ATION EVALU LE B A IL A AV www.DataSheet4U.com 2.2MHz, 2A Buck Converters with an Integrated High-Side Switch Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ 4.5V to 5.5V or 5.5V to 23V Input Voltage Range Output Voltage Adjustable Down to 0.6V 2A Output Current Synchronous Rectifier Driver Output (MAX5089) for Higher Efficiency Resistor-Programmable Switching Frequency from 200kHz to 2.2MHz External Synchronization and Enable (On/Off) Inputs Clock Output for Driving Second Converter 180° Out-Of-Phase (MAX5089) Integrated 150mΩ High-Side n-Channel Power MOSFET Power-On Reset Output (MAX5088)/Power-Good Output (MAX5089) Short-Circuit Protection Thermal-Shutdown Protection Thermally Enhanced 16-Pin TQFN Package Dissipates 2.7W General Description The MAX5088/MAX5089 high-frequency, DC-DC converters with an integrated n-channel power MOSFET provide up to 2A of load current. The MAX5088 includes an internal power MOSFET to enable the design of a nonsynchronous buck topology power supply. The MAX5089 is for the design of a synchronous buck topology power supply. These devices operate from a 4.5V to 5.5V or 5.5V to 23V input voltage and a 200kHz to 2.2MHz resistor-programmable switching frequency. The voltage-mode architecture with a peak switch current-limit scheme provides stable operation up to a 2.2MHz switching frequency. The MAX5088 includes a clock output for driving a second DC-DC converter 180° out-of-phase and a power-on-reset (RESET) output. The MAX5089 inc...