WL2803E18-5/TR

The WL2803E18-5/TR is a 3.3V low-dropout (LDO) voltage regulator from Diodes Incorporated. It provides a fixed 1.8V output with a 500mA current capacity and a low dropout voltage, making it ideal for power-sensitive applications.
Key features:
- Input voltage range: 2.3V to 5.5V
- Low quiescent current: ~75µA (typical)
- High PSRR (Power Supply Rejection Ratio): ~70dB at 1kHz
- Thermal and overcurrent protection
- Small SOT-25 package (suitable for space-constrained designs)
Common applications include portable electronics, IoT devices, and battery-powered systems requiring stable voltage regulation. The TR suffix indicates tape-and-reel packaging for automated assembly.
For detailed specs, refer to the datasheet.

The WL2803E18-5/TR is a 5-pin voltage regulator IC with the following functions:
1. Input (VIN) – Receives the input voltage (typically up to 18V).
2. Ground (GND) – Reference for the circuit.
3. Enable (EN) – Controls the regulator's on/off state (active high).
4. Output (VOUT) – Provides a regulated 5V output.
5. Bypass (BP) – Optional capacitor connection for noise reduction.
This low-dropout (LDO) regulator is designed for stable 5V output with low quiescent current, suitable for battery-powered and portable devices.

The WL2803E18-5/TR is a surface-mount (SMD) LED package, specifically a PLCC-4 (Plastic Leaded Chip Carrier) type. It features a compact design with four leads, suitable for automated assembly. The "TR" indicates it comes on a tape and reel for high-volume production. Typical applications include backlighting and indicators.