ET5H233F

The ET5H233F from ETEK MICROELECTRONICS is a fixed 3.3V low dropout regulator capable of delivering 300mA. It features an ultra-low quiescent current of 4.5µA, making it ideal for battery-powered applications. The SOT-89-3 package provides good thermal performance, while the dropout voltage of 1.3V at full load ensures efficient operation. With 60dB PSRR at 1kHz, it delivers clean power for sensitive electronics. Ultra-Low Quiescent Current (4.5µA): Extends battery life in standby and always-on applications. 300mA Output Current: Supports a wide range of loads from sensors to microcontrollers. Low Dropout (1.3V @ 300mA): Maintains regulation even with low input headroom. SOT-89-3 Package: Enhanced thermal dissipation for higher power applications. 60dB PSRR at 1kHz: Reduces low-frequency noise from power supplies. Battery-Powered WearablesThe ultra-low 4.5µA quiescent current extends battery life in wearables like smartwatches and fitness trackers, where standby power is critical.Energy Harvesting SystemsWith 300mA capability and low IQ, it suits energy harvesting modules that need efficient regulation from solar or thermal sources.Portable InstrumentationThe SOT-89-3 package offers good thermal dissipation for handheld multimeters or data loggers requiring a stable 3.3V rail.Wireless Sensor NodesIts low dropout of 1.3V at 300mA allows operation from a 4.5V battery down to 3.3V, ensuring reliable RF transmission.Home Automation ControllersIdeal for powering microcontrollers and Zigbee modules in smart home devices, with PSRR of 60dB at 1kHz to reject mains hum.Medical Monitoring PatchesThe low quiescent current and compact package make it suitable for disposable health patches that require long-term operation. Product attributes Property Value Manufacturer ETEK MICROELECTRONICS Product Series ET5H2XX Packaging Tape & Reel (TR) | Output Configuration Positive Output Type Fixed Number of Regulators 1 Voltage - Input (Max) 36V Voltage - Output (Min/Fixed) 3.3V Voltage - Output (Max) - Voltage Dropout (Max) 1.3V @ 300mA Current - Output 300mA Current - Quiescent (Iq) 4.5 µA Current - Supply (Max) - PSRR 60dB (1kHz) Control Features Enable Protection Features Over Current, Over Temperature Operating Temperature -40°C ~ 85°C (TA) Grade - Qualification - Mounting Type Surface Mount Package / Case TO-243AA Supplier Device Package SOT-89-3 ROHS Q: What is the output voltage of the ET5H233F? A: It is a fixed output regulator with 3.3V output. Q: What is the maximum output current? A: It can supply up to 300mA. Q: What is the input voltage range? A: The input voltage is 3.3V (typical). Q: What is the dropout voltage? A: Dropout is 1.3V at 300mA load. Q: What is the quiescent current? A: Ultra-low quiescent current of 4.5µA. Q: What package is available? A: SOT-89-3 package.