XC6219B332MR 3.3V 300mA Linear Voltage Regulator SOT23-5

XC6219B332MR 3.3V 300mA Linear Voltage Regulator SOT23-5 is a high-speed, low-dropout (LDO) CMOS voltage regulator that provides a stable 3.3V output for high-density, battery-powered electronic devices. This specialized component incorporates a built-in low-resistance driver transistor, which allows it to deliver a high output current of up to 300mA while maintaining an exceptionally low dropout voltage. Consequently, it excels in applications where efficiency and voltage stability are paramount. The XC6219 series also features a high ripple rejection rate and a fast-response current limiter circuit. Furthermore, the integrated chip-enable (CE) function permits the user to switch the regulator into a low-power standby mode. Therefore, you can reliably integrate this regulator into portable gadgets to extend battery life and ensure clean power delivery to sensitive microprocessors.

Key Features:

• High Output Current: The device supports a maximum output current of 300mA, fulfilling the power requirements of most modern IoT and mobile peripherals.
• Low Dropout Voltage: It utilizes a CMOS process to achieve a very low dropout voltage, typically 200mV at 100mA, maximizing the usable range of battery power.
• High Power Supply Rejection Ratio (PSRR): Offers a high ripple rejection of 65dB at 1kHz, which ensures a clean DC output even in noisy RF environments.
• Chip Enable (CE) Control: Features a dedicated enable pin that allows for a standby mode, reducing current consumption to less than 0.1μA when the device is inactive.
• Internal Protection: Includes integrated current limiting and thermal shutdown circuitry to protect the device from short circuits and overheating.

Technical Specifications:

• Output Voltage: 3.3 V (Fixed)
• Input Voltage Range: 2.0 V to 6.0 V
• Maximum Output Current: 300 mA
• Dropout Voltage: Typically 200 mV @ 100 mA (400 mV max @ 300 mA)
• Output Voltage Accuracy: ±2% (±1% for high accuracy versions)
• Quiescent Current: 25 μA (Typical)
• Standby Current: Less than 0.1 μA
• Operating Temperature Range: −40°C to +85°C

Mechanical Specifications:

• Package Type: SOT-23-5 (Small Outline Transistor)
• Mounting Style: Surface Mount Device (SMD/SMT)
• Number of Pins: 5 Pins
• Encapsulation: Molded Plastic Case (Green Epoxy)

Dimensions:

• Body Length: ≈ 2.90 mm
• Body Width: ≈ 1.60 mm (Body only) / 2.80 mm (Including leads)
• Body Height: ≈ 1.10 mm
• Pin Pitch: 0.95 mm
• Weight: ≈ 0.015 g

Pinout and Wiring:

• Pin 1 (VIN): Connect to the unregulated input voltage source (up to 6.0V).
• Pin 2 (VSS): Connect to the circuit ground (0V reference).
• Pin 3 (CE): Chip Enable pin. Apply a high logic level to turn the regulator on, or a low level to enter standby.
• Pin 4 (NC/ADJ): No Connection (for fixed versions) or used for external adjustment (for adjustable versions).
• Pin 5 (VOUT): Regulated 3.3V output. Connect a small ceramic capacitor (at least 1.0μF) between this pin and ground for stability.

Datasheet Reference:

• Download Torex XC6219 Series Datasheet

Commonly Used in:

• Mobile Smart Phones: Providing stable voltage rails for internal sensors and camera modules.
• Bluetooth/Wi-Fi Modules: Powering RF transceivers where low noise and high ripple rejection are critical for signal integrity.
• Battery-Powered Instrumentation: Managing power for handheld diagnostic tools and measurement equipment.

Applications:

• Digital Cameras: Regulating power for image processors and internal storage components.
• Smart Home Devices: Powering low-energy microcontrollers in smart locks and environmental sensors.
• Reference Voltage Source: Serving as a stable 3.3V reference for high-resolution Analog-to-Digital Converters (ADCs).

Equivalent Models:

• RT9193-33GB: A popular 3.3V 300mA LDO regulator often used as a direct footprint-compatible replacement.
• MIC5219-3.3YM5: A similar high-performance LDO from Microchip with comparable current and dropout specifications.
• LP2985-33DBVR: A Texas Instruments alternative that provides low-noise regulation in the SOT-23-5 package, however, check the enable pin logic thresholds for specific compatibility.

Package Includes:

• 1 x XC6219B332MR 3.3V 300mA Linear Voltage Regulator SOT23-5