ME6211C33M5G-N 3.3V LDO Voltage Regulator PMIC SOT-23-5

Specifications

• Output Voltage: 3.3V DC
• Operating Voltage Range (Input): 2V to 6.0V
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV (typical at 100mA) / 260mV (max at 200mA)
• Supply Current (Operating): 60µA (typical)
• Standby Current: 0.1µA (typical)
• Ripple Rejection (PSRR): 70dB @ 1kHz
• Output Noise: 50µVrms (300Hz - 50kHz)
• Package Type: SOT-23-5 (SMD)
• Enable/Disable (CE Pin): Yes
• Operating Temperature Range: -40°C to +150°C

Applications

• Mobile phones
• Cordless phones, radio communication equipment
• Portable games
• Cameras, Video cameras
• Reference voltage sources
• Battery powered equipment

Required Additional Items:

• SOT-23-5 to DIP Adapter Board — Essential if you plan to prototype on a breadboard.
• 1µF 0805 SMD Ceramic Capacitors (Minimum 2x) — Absolutely necessary for input and output stability.
• Soldering Iron & Fine Solder — Required to mount the SMD component to your PCB.

Included in the Box:

• ME6211C33M5G-N IC (Quantity as ordered) — SMD component only, no accessories included.

Frequently Asked Questions (FAQ)

• What is the maximum input voltage for the ME6211C33M5G-N?
  The absolute maximum input voltage is 6.5V, but the recommended operating range is 2.0V to 6.0V.
• What is the exact output voltage?
  This specific model (C33) provides a fixed, stable 3.3V DC output.
• How much current can this regulator supply?
  It can supply a maximum continuous output current of 500mA, provided heat is properly dissipated.
• What is the dropout voltage?
  It features a very low dropout voltage of typically 120mV when drawing 100mA, and 260mV at 200mA.
• Are external capacitors required?
  Yes. You must use at least a 1µF ceramic capacitor on both the input ($V_{IN}$) and output ($V_{OUT}$) pins for stable operation.
• What is the function of the CE pin?
  The CE (Chip Enable) pin turns the regulator on or off. Driving it high turns the regulator on, and driving it low puts it into a low-power standby mode.
• Can I leave the CE pin unconnected (floating)?
  No. A floating CE pin can cause erratic behavior. If you want the regulator to be always on, tie the CE pin directly to the pin.
• Can I use this to power an ESP32 or NRF24L01?
  Yes, it is highly recommended for these modules. It provides the clean, noise-free 3.3V power required by sensitive RF and Wi-Fi chips.
• Can I power this from a standard 5V USB source?
  Absolutely. Stepping down 5V USB power to 3.3V logic is one of the most common use cases for this IC.
• Can I power this from a 3.7V LiPo battery?
  Yes. Because the dropout voltage is so low (120mV), a standard 3.7V LiPo will comfortably output 3.3V through this regulator until the battery is nearly dead.
• What package type is this IC?
  It is a surface-mount SOT-23-5 (5-pin) package.