RT9080-18GJ5

RT9080-18GJ5 is a fixed-output buck regulator from RichTek’s RT9080 family. It generates a stable 1.8 V rail from a higher input in a compact package (GJ suffix indicates lead-free, small DFN/QFN package).
Key points:
- Fixed 1.8 V output; integrated high- and low-side MOSFETs for a compact, efficient solution
- Input range roughly 2.5–5.5 V; suitable for battery-powered designs
- MHz-range switching frequency with good transient response
- Features: enable/soft-start, over-current and thermal protection
- Package: small DFN/QFN-8 style
Typical applications: mobile devices, PMIC subsystems, memory/CPU power rails, portable electronics.
Note: For exact current capability, efficiency curves, pinout, and thermal data, consult the latest RT9080 datasheet and packaging information.

RT9080-18GJ5 is a RichTek synchronous buck regulator. Key features include:
- Wide input range up to 18V
- Integrated high-side and low-side MOSFETs for high efficiency
- Current-mode PWM control with fixed switching frequency
- Adjustable output via external feedback resistors
- Enable/shutdown control and soft-start
- Overcurrent/short-circuit protection and thermal shutdown
- UVLO/over-voltage protection
- Low quiescent current for battery/portable use
- Small surface-mount package (typical 8-pin with exposed pad)
Note: exact pinout, voltage ranges, and package options can vary by revision; consult the official datasheet for precise specifications.

- Pin count: 5 pins (SOT-23-5)
- Function: Fixed-output 1.8V low-dropout regulator (LDO) with an enable pin for turning the regulator on/off.

- Manufacturer: Richtek Technology Corporation (Richtek), often branded as RichTek.
- What kind of company: A Taiwanese fabless semiconductor company that designs and sells power management ICs (PMICs) such as voltage regulators, DC-DC converters, LDOs, and battery charging ICs for portable and consumer electronics.

RT9080-18GJ5 is a 1.8V LDO regulator. Suitable applications include:
- Core/low-voltage rails for mobile devices and embedded systems
- Smartphones, tablets, wearables, and IoT sensors
- Powering FPGAs, DSPs, memory, and ASICs
- Consumer electronics and networking equipment
- Industrial and automotive electronics requiring a 1.8V supply
It provides a compact solution for stable 1.8V regulation in compact power-management designs.

SC-70-5 (SOT-23-5) 5-pin package.