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Low Iq, Wide Vin, 3 AMP LDO

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The AZ2185 series is low dropout positive voltage regulators with a maximum dropout of 1.5V at 3A of load current.

The device features low quiescent current, low adj. current and improved load transient performance. This device built in band-gap reference circuit, on-chip thermal shutdown and current limit function

The AZ2185 is available in adjustable version. The adjustable version can set the output voltage with two external resistors.

The AZ2185 series is available in the TO252 (Standard) package.


  • Low Dropout Voltage: Typical 1.3V at 3A
  • Current Limiting and Thermal Protection
  • Output Current: 3A
  • Current Limit: 4.5A
  • Operating Junction Temperature: 0 to +125°C
  • Line Regulation: 0.015%/V (Typ)
  • Load Regulation: 0.1%/A (Typ)
  • Adjust Pin Current: 6μA (Typ)
  • Minimum Load Current: 0.3mA (Typ)
  • Compatible with Low ESR Ceramic Capacitor


  • High Efficiency Linear Regulators
  • Battery Charger
  • Digital Video/Camcorder
  • Post Regulation for Switching Supplies
  • Microprocessor Supply
  • Mother Board Power Supplies
  • DVD-video Player
  • Telecom Equipment
  • Set Top Boxes and Web Boxes Modules' Supply

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Output options Adjustable
Iout (A) 3
Vin (Max) (V) 12
Vin (Min) (V) 2.75
Vout (min) 1.25
Vout (max) 12
Adjustabe VFB (V) 1.25
Iq (typ) (µA) 300
Accuracy 25C 1%
Noise uV RMS 10-100 kHz 150
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 1.5
PSRR (dB) 1kHz 50
Operating Temperature (Ambient) (°C) -40 to 85 (°C)
Channels 1
Output Discharge no
Iq (max)(µA) 1000
VCTL function no

Related Content


Technical Documents

Recommended Soldering Techniques




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-2514 2021-03-09 2021-06-09 Additional Wafer Source JKFAB