SOT-23 Switching Regulator with Integrated 1A Switch Delivers High Current Outputs in a Small Footprint

摘要

Linear Technology's LT~(~R)1930 is the industry's highest power SOT-23 switching regulator. The device contains an internal 1A, 36V switch and is pin compatible with both the low power LT1613 and the micropower LT1615. The LT1930 provides a simple upgrade path for users of these parts who need more power for new designs. In addition to portable applications requiring higher output currents, the device also fits well in nonbattery-operated equipment. Multiple output power supplies can now use a separate regulator for each output voltage, replacing cumbersome quasi-regulated approaches using a single regulator and custom transformers. The LT1930 utilizes a constant frequency, internally compensated, current mode PWM architecture that results in low, predictable output noise that is easy to filter. Its 1.2MHz switching frequency allows the use of tiny, low cost capacitors and low profile inductors. With an input voltage range of 2.6V to 16V, the LT1930 is a good fit for a variety of applications.