Product Overview
The XC6221A332MR-G is a 3.3V high-speed LDO (Low Dropout) regulator from Torex Semiconductor, designed for low-power, battery-operated applications. Featuring an ultra-low quiescent current of just 5µA typical and a dropout voltage of only 120mV at 300mA, this CMOS LDO provides efficient power conversion with minimal power loss. Packaged in a compact USP-4 (SOT-25 equivalent) package, it includes foldback current limit, overcurrent protection, and thermal shutdown for robust operation.
Key Specifications
| Parameter | Value |
| Manufacturer | Torex Semiconductor |
| Output Voltage | 3.3V (fixed) |
| Output Current | 300mA (max) |
| Dropout Voltage | 120mV @ 300mA |
| Input Voltage Range | 1.8V to 6.0V |
| Quiescent Current | 5µA (typ), 8µA (max) |
| Output Voltage Accuracy | ±2% |
| Line Regulation | 0.2%/V (typ) |
| Load Regulation | 50mV (typ @ 1mA-300mA) |
| PSRR | 70dB @ 1kHz |
| Package | USP-4 (SOT-25 / SOT-89-5 equivalent) |
| Operating Temperature | -40°C to +105°C |
Features
- Ultra-low quiescent current: 5µA typical
- High output voltage accuracy: ±2%
- Low dropout voltage: 120mV at 300mA
- High ripple rejection: 70dB at 1kHz
- Built-in overcurrent protection (foldback)
- Built-in thermal shutdown circuit
- Small ceramic capacitor compatible (1µF)
- CE and RoHS compliant
- Lead-free and halogen-free
- Fast transient response
Applications
- Battery-powered portable devices
- Wearable electronics
- Wireless communication devices
- Power management for sensors and modules
- Consumer electronics
- IoT and low-power applications
- Post-regulation for switching power supplies