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The AP2205 series is a positive voltage regulator IC fabricated by high-voltage EPNP process.

The AP2205 has features of wide input voltage range, high accuracy, high ripple rejection, low dropout voltage, low noise, current limit and ultra-low quiescent current which make it ideal for use in various USB and portable devices.

The IC consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current limit circuit for current protection, and a chip enable circuit, a low power shutdown mode for extended battery life, over current protection, over temperature protection, as well as reversed-battery protection.

The AP2205 has 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 5.0V fixed voltage versions and adjustable voltage version.

The AP2205 is available in space-saving SOT25 and SOT89 packages.


  • Battery-powered Equipment
  • Laptop, Palmtops, Notebook Computers
  • Portable Information Appliances
  • Industrial/Automotive Applications


  • Wide Input Voltage Range: 2.3V to 24V
  • Wide Output Voltage Range: 1.24V to 22V
  • Excellent Ripple Rejection: 60dB@ f = 1kHz
  • Low Dropout Voltage: VDROP = 100mV@ IOUT = 100μA
  • Low Ground Current
  • High Output Voltage Accuracy
  • Compatible with Low ESR Ceramic Capacitor
  • Excellent Line/Load Regulation
  • Thermal Shutdown Function

Product Specifications

Product Parameters

Features Wide Vin
IOUT 0.2 A
VIN (Max) 24 V
VIN (Min) 2.3 V
VOUT Fixed (1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 5.0V), Adjustable (1.24V to 22V) V
IQ 36 µA
PSRR 60 dB
VDROPOUT (Max) 0.1 V
Operating Temperature (Ambient) -40 to 85
Enable Active H
Channels 1

Technical Documents

Recommended Soldering Techniques



Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP2205-33W5-7 Mouser Electronics Inc. 2020 7/7/2020 Buy Now United States
AP2205-33Y-13 Mouser Electronics Inc. 5455 7/7/2020 Buy Now United States
AP2205-33YR-13 Mouser Electronics Inc. 2018 7/7/2020 Buy Now United States
AP2205-50Y-13 Digi-Key Electronics 84 7/6/2020 Buy Now United States
AP2205-50YR-13 Mouser Electronics Inc. 2490 7/7/2020 Buy Now United States
AP2205-50YR-13 Future Electronics - Europe 150 7/6/2020 England
AP2205-W5-7 Mouser Electronics Inc. 17243 7/7/2020 Buy Now United States
AP2205-W5-7 Digi-Key Electronics 8214 7/6/2020 Buy Now United States