The Diodes Incorporated AP2210K-3.3TRG1 is a compact 300mA ultra-low-dropout linear regulator (ULDO/LDO) designed to provide a stable 3.3V fixed output for battery-powered and noise-sensitive electronic systems.
The AP2210 features a typical dropout voltage of only 250mV at 300mA, helping maintain regulation when the input voltage is close to the required output voltage. It provides up to 300mA output current and offers ±1% output-voltage accuracy at 25°C.
Low-noise operation and strong power-supply ripple rejection make the device well suited for RF and sensitive analog circuitry. The regulator provides approximately 75dB PSRR at 100Hz under the specified test conditions, helping suppress noise and ripple from the input power source.
The device also includes a logic-compatible Enable input, allowing the regulator to be switched into a low-power shutdown state. Shutdown current is specified at up to 1µA, helping extend battery life in portable and standby applications.
Integrated protection functions include over-current protection, thermal protection and reverse-current protection, improving system reliability under abnormal operating conditions. The AP2210 family supports an input operating range up to 13.2V; for reliable regulation and good PSRR, the datasheet recommends maintaining sufficient input-to-output voltage headroom.
The AP2210K-3.3TRG1 specifically uses the SOT-23-5 package and provides a dedicated BYP pin for low-noise operation. The TRG1 suffix denotes tape-and-reel packaging with a Green, lead-free configuration.
Key Features
- Manufacturer: Diodes Incorporated
- Part Number: AP2210K-3.3TRG1
- Product Type: ULDO / LDO Linear Regulator
- Output Type: Fixed
- Output Voltage: 3.3V
- Maximum Output Current: 300mA
- Typical Dropout Voltage: 250mV @ 300mA
- Output Accuracy: ±1% at 25°C
- PSRR: 75dB @ 100Hz
- Typical Quiescent Current: 100µA
- Maximum Quiescent Current: 180µA
- Maximum Shutdown Current: 1µA
- Recommended Input Range: Up to 13.2V
- Logic-Controlled Enable
- Low-Power Shutdown Mode
- BYP Pin for Low-Noise Operation
- Over-Current Protection
- Thermal Protection
- Reverse-Current Protection
- Excellent ESR Stability
- Package: SOT-23-5 / SOT-25
- Mounting Type: Surface Mount
- Packaging: Tape & Reel
- Standard Reel Quantity: 3000 pcs
- Operating Ambient Temperature: -40°C to +85°C
- Green / Lead-Free
- RoHS Compliant
- Product Status: Active
Typical Applications
- Battery-Powered Equipment
- RF Electronics
- Wireless Communication Devices
- Mobile and Portable Electronics
- Consumer Electronics
- PC Motherboards
- Handheld Devices
- Low-Noise Power Supplies
- MCU and Logic Power Rails
- Embedded Systems
The AP2210K-3.3TRG1 is suitable for designs requiring a compact 3.3V 300mA low-noise LDO with low dropout voltage, shutdown control and integrated protection.
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