RT9081AGQZA

The RT9081AGQZA is a low-dropout (LDO) linear regulator from Richtek, designed for stable voltage regulation in compact electronic devices.
### Key Features:
- Input Voltage Range: 2.5V to 5.5V
- Output Voltage: Adjustable (0.8V to 5V) or fixed options
- Output Current: Up to 300mA
- Low Dropout Voltage: ~160mV at 300mA
- High PSRR: 70dB at 1kHz (enhances noise rejection)
- Ultra-Low Quiescent Current: 40µA (ideal for battery-powered apps)
- Protections: Overcurrent, thermal shutdown, and reverse current blocking
- Package: SOT-23-5 (small footprint)
### Applications:
- Portable devices (smartphones, wearables)
- IoT sensors, embedded systems
- Power-sensitive consumer electronics
The RT9081AGQZA offers high efficiency, low noise, and robust protection, making it suitable for space-constrained designs requiring reliable power management.

The RT9081AGQZA is a 300mA LDO regulator. Equivalent alternatives include:
- MIC5205-3.3YM5 (Microchip)
- AP2112K-3.3TRG1 (Diodes Inc.)
- TPS76933DBVT (TI)
- MCP1700T-3302E/TT (Microchip)
These are 3.3V fixed-output LDOs with similar current ratings. Verify pin compatibility and specs for your application. For adjustable versions, consider RT9193 or AP2210.

The RT9081AGQZA is a low-dropout (LDO) linear regulator with the following key features:
- Input Voltage Range: 2.2V to 5.5V
- Output Voltage: Adjustable (0.8V to 5.0V) or fixed options
- Output Current: Up to 300mA
- Ultra-Low Dropout: 150mV (typical at 300mA)
- Low Quiescent Current: 40µA (typical)
- High PSRR: 70dB at 1kHz
- Fast Transient Response
- Protections: Overcurrent, thermal shutdown, reverse current
- Package: DFN-6 (1x1mm) (ultra-compact)
- Applications: Portable devices, IoT, wearables, and battery-powered systems
It offers stable performance with small ceramic capacitors and is ideal for space-constrained designs.

The RT9081AGQZA is a 5-pin LDO voltage regulator in a DFN-5 (1x1) package.
Pin Functions:
1. VIN – Input voltage (1.5V to 5.5V).
2. GND – Ground connection.
3. EN – Enable pin (active high).
4. BYP – Bypass capacitor connection for noise reduction.
5. VOUT – Regulated output voltage (adjustable/fixed options).
Key Features:
- 300mA output current.
- Low dropout voltage.
- Stable with ceramic capacitors.

The RT9081AGQZA is available in a DFN-8 (2x2) package. This compact, lead-free package measures 2mm x 2mm with a height of 0.75mm, suitable for space-constrained applications. It features an exposed thermal pad for improved heat dissipation.