RT9073N-33GB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The RT9073N-33GB is a low-dropout (LDO) linear voltage regulator manufactured by Richtek USA Inc. It provides a fixed output voltage of 3.3V with a maximum output current capability of 250mA. The device operates within an input voltage range of 1.2V to 5.5V and features a typical quiescent current of 1µA. It includes an enable function for power management and offers high power supply rejection ratio (PSRR). The component is housed in a ZQFN-4 package and is rated for operation between -40°C and +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low quiescent current design extends battery life in portable applications
• Integrated enable pin allows precise control over power states
• Stable operation with ceramic output capacitors across the full load range

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered handheld devices
• Portable consumer electronics
• IoT sensor nodes requiring low standby current

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'GB' against official Richtek documentation to confirm package type and tape/reel specifications. Ensure the input voltage range supports the 3.3V output requirement. Confirm RoHS compliance status through the manufacturer's declaration before finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.3V rail is needed from inputs as low as 1.2V. The low IQ makes it suitable for always-on circuits where standby power consumption is critical. Compare dropout voltage requirements against the expected load current to ensure regulation stability under varying conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the RT9073 family of low-dropout regulators designed for miniaturized packaging. The series emphasizes low power consumption and wide input voltage ranges, targeting applications where space and battery efficiency are primary constraints. It complements Richtek's broader portfolio of power management solutions for mobile and industrial sectors.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for pin-compatible alternatives within the same LDO family or other manufacturers offering similar 250mA fixed-output regulators. Verify that substitute components match the ZQFN-4 footprint and thermal characteristics to avoid PCB layout modifications.