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The FT511BB is a fixed-output linear voltage regulator manufactured by Fremont Micro Devices Ltd. It provides a fixed output voltage of 1.5V with a maximum output current of 150mA. The device features a maximum input voltage rating of 5.5V and a typical dropout voltage of 0.45V at 100mA load. Quiescent current is specified at 1.6 µA. It includes overcurrent protection and operates within a temperature range of -40°C to +85°C. The component is housed in a SOT-89-3LA surface-mount package.
Verify component status as the FT511BB is listed as obsolete or discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market sources if procurement is required. Ensure that any substitute components meet the original electrical specifications, particularly the 1.5V output and 150mA current rating, to maintain system compatibility.
Select this component when a fixed 1.5V output is required with minimal quiescent current draw. The SOT-89-3LA package suits applications with limited board space. Consider the 5.5V maximum input voltage limit during design. Verify thermal performance under expected load conditions, as the dropout voltage increases with current. Ensure the operating temperature range aligns with the application environment.
The FT511BB belongs to the FT511 series of positive fixed linear regulators from Fremont Micro Devices Ltd. This series is designed for low-power applications where stability and low noise are prioritized. The specific BB suffix denotes the SOT-89-3LA package variant. These regulators are part of the broader PMIC category used for voltage conditioning in consumer and industrial electronics.
Public confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, engineers should evaluate alternative LDO regulators offering identical 1.5V output, 150mA capacity, and compatible pinout or package dimensions.