XC6221B502MR-G

XC6221B502MR-G is Torex Semiconductor’s fixed-output low-dropout (LDO) voltage regulator. In the XC6221 family, the B502 variant provides a fixed 5.0 V output. It is designed for compact, battery-powered and space-constrained applications, delivering a stable supply to microcontrollers, sensors, and other analog/digital ICs from a modest input voltage.
Key points:
- Fixed 5.0 V output in a small 5-pin package (suitable for compact PCB layouts).
- Optimized for low quiescent current and convenient power management in portable electronics.
- Includes typical protection features common to LDOs (short-circuit/overload protection, thermal shutdown, etc.).
Suffix MR-G indicates the packaging/lot style (e.g., tape-and-reel). For exact electrical specs (input voltage range, max load current, dropout, quiescent current, dynamic performance) and package details, refer to the XC6221B502MR-G datasheet from Torex or authorized distributors.

Here are the key features of the XC6221B502MR-G:
- Fixed output: 5.0 V (502)
- Output current: up to 500 mA
- Low dropout voltage for battery operation
- Ultra-low quiescent current
- Built-in current limit and thermal shutdown protection
- Stable with ceramic output capacitors (Cout typically 2.2 µF or larger; ESR within spec)
- RoHS-compliant (lead-free) package
- Compact, surface-mount package (MR-G series) suitable for small boards
- Wide operating temperature range: typically -40°C to +125°C
Note: Exact package, input range, and additional pin features (e.g., enable) may vary by variant; consult the datasheet for precise specs.

- Pin count: 5 pins
- Function: Fixed-output low-dropout (LDO) regulator (5.0 V) with enable, in a SOT-23-5 package.

- Manufacturer: Torex Semiconductor Ltd.
- What kind of company: A Japanese semiconductor company that designs and sells analog and power-management ICs for portable electronics.

Applications of XC6221B502MR-G:
- Space- and power-constrained, battery-powered devices
- Power rails for microcontrollers, memories, and peripheral ICs
- IoT nodes, wearables, portable meters, and sensor modules
- Wireless modules and RF front-ends (Bluetooth, Zigbee, Wi‑Fi)
- Displays, LED drivers, and indicator circuits
- USB accessories and small chargers needing a stable fixed output rail
Notes: use as a compact, low-noise fixed-voltage regulator in consumer electronics and embedded systems.

SC-70-5 (SOT-23-5) 5-pin package, Pb-free (-G).