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1A Low Noise CMOS LDO Regulator with ENABLE

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The AP2115 is CMOS process low dropout linear regulator with enable function, the regulator delivers a guaranteed 1A (min.) continuous load current. The AP2115 features low power consumption. The AP2115 is available in 1.2V, 1.8V, 2.5V and 3.3V regulator output, and available in excellent output accuracy ±1.5%, it is also available in an excellent load regulation and line regulation performance. The AP2115 is available in standard packages of SOIC-8 and SOT-89-5.


  • Output Voltage Accuracy: ±1.5%
  • Output Current: 1A (Min.)
  • Fold-back Short Current Protection: 50mA
  • Low Dropout Voltage (3.3V): 450mV (Typ.) @ IOUT=1A
  • Stable with 4.7μF Flexible Cap: Ceramic, Tantalum and Aluminum Electrolytic
  • Excellent Line Regulation: 0.02%/V (Typ.), 0.1%/V (Max.) @ IOUT=30mA
  • Excellent Load Regulation: 0.2%/A @ IOUT=1mA to 1A
  • Low Quiescent Current: 60μA (1.2V/1.8V/ 2.5V)
  • Low Output Noise: 30μVRMS
  • PSRR: 68dB @ Freq=1kHz (1.2V/1.8V)
  • OTSD Protection
  • Operation Temperature Range: -40°C to 85°C
  • ESD: MM 400V, HBM 4000V
  • Application(s)

  • LCD Monitor
  • LCD TV
  • STB
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    Output options Fixed
    Iout (A) 1
    Vin (Max) (V) 6
    Vin (Min) (V) 2.5
    Vout (min) 1.2
    Vout (max) 3.3
    Fixed Vout (V) 1.2, 1.8, 2.5, 3.3
    Iq (typ) (µA) 60
    Accuracy 25C 1.50%
    Noise uV RMS 10-100 kHz 30
    VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 0.75
    PSRR (dB) 1kHz 65
    Operating Temperature (Ambient) (°C) -40 to 85 (°C)
    Enable Active H
    Channels 1
    Output Discharge yes
    Iq (max)(µA) 75
    VCTL function no

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    RoHS CofC

    Product Change Notices (PCNs)

    A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

    PCN # Issue Date Implementation Date Subject
    PCN-2568 2022-03-29 2022-03-29 Qualified Additional Assembly & Test (A/T) Sites, Bill of Material, and updated Data Sheets for Package Outline Dimension Change
    PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site