1. General Information & Variants:

️· Device: AP2112 LDO Regulator
️· Variants: Three output voltage options are presented:
- AP2112-1.8: Output voltage of 1.8V
- AP2112-2.6: Output voltage of 2.6V
- AP2112-3.3: Output voltage of 3.3V
️· Datasheet Revision: Rev. 2.2
️· Date: June 2017

2. Common Electrical Characteristics (Applies to all variants - summarized from the tables):

️· Output Voltage Accuracy: Output voltage is guaranteed within ±1.5% over operating conditions. (Implied from the "VOUT" columns of the tables)
️· Quiescent Current (IQ): Typically 55µA. Maximum is 80µA.
️· Shutdown Current (ISTD): Typically 0.01µA, maximum 1.0µA.
️· Power Supply Rejection Ratio (PSRR): 65dB at 100Hz. (This is a good level of noise rejection).
️· Output Voltage Temperature Coefficient: ±100 ppm/°C (This indicates how much the output voltage changes with temperature).
️· Short Circuit Current (ISHORT): 50mA.
️· Output Noise Voltage (VNOISE): 50µVRMS.
️· Enable (EN) Voltage:
- VIH (Enable High Voltage): 1.5V to 6.0V
- VIL (Enable Low Voltage): 0V to 0.4V
️· Startup Time (tS): 20µs.
️· EN Pull-Down Resistor (RPD): 3.0MΩ.
️· VOUT Discharge Resistor (RDCHG): 60Ω.
️· Thermal Shutdown Temperature (TOTSD): +160°C.
️· Thermal Shutdown Hysteresis (THYOTSD): +25°C.

3. Package Thermal Resistance (θJC):

The datasheet provides thermal resistance values for different packages:

️· SOT-25: 96°C/W
️· SO-8: 75°C/W
️· SOT89-5: 47°C/W
(Lower θJC means better heat dissipation capability)

4. Key Takeaways:

️· The AP2112 is a low-power LDO regulator with good PSRR and fast startup.
️· It offers different output voltage options to suit various applications.
️· The datasheet provides thorough electrical characteristics and package thermal data for design consideration.
️· It's designed for efficient operation with low quiescent current and shutdown current.