ADP3331

NOT RECOMMENDED FOR NEW DESIGNS

High Accuracy, Ultra-Low Quiescent Current LDO; SOT-23

Data Sheet (Rev. B) Product Selection Table

Part Models: 1
1ku List Price: Starting From $1.40

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Overview

High Accuracy over Line and Load: ±0.7% @ 25°C, 1.4% over Temperature
Ultralow Dropout Voltage: 140 mV (Typ) @
200 mA
Can Be Used as a High Current (>1 A) LDO Controller
Requires Only C_O = 0.47 µF for Stability
anyCAP = Stable with Any Type of Capacitor (Including MLCC)
Current and Thermal Limiting

Low Noise
Low Shutdown Current: 10 nA Typical
2.6 V to 12 V Supply Range
1.5 V to 11.75 V Output Range
–40°C to +85°C Ambient Temperature
Range
Ultrasmall Thermally Enhanced
Chip-on-Lead™ SOT-23-6
Lead Package

The ADP3331 is a member of the ADP330x family of precision low dropout anyCAP^™ voltage regulators. The ADP3331 operates with an input voltage range of 2.9 V to 12 V and delivers a load current up to 200 mA. The ADP3331 stands out from the conventional LDO's with a novel architecture and an enhanced process which enables it to offer performance advantages and higher output current than its compeititon. Its patented design requires only a 0.47 µF output capacitor for stability. This device is insensitive to capacitor Equivalent Series Resistance (ESR), and is stable with any good quality capacitor, including ceramic (MLCC) types for space restricted applications. The ADP3331 achieves exceptional accuracy of ± 0.7% at room temperature and ± 1.4% overall accuracy over temperature, line and load variations. The dropout voltage of the ADP3331 is only 140 mV (typical) at 200 mA. This device also includes a safety current limit, thermal overload protection and a shutdown feature. In shutdown mode, the ground current is reduced to less than 2 µA. The ADP3331 has ultralow quiescent current 34 µA (typical) in light load situations. The SOT-23-6 package has been thermally enhanced using Analog Device's proprietary Chip-on-Lead^™ feature to maximize power dissipation.

Part Models: 1
1ku List Price: Starting From $1.40

Documentation

Frequently Asked Question 1

FAQ 09/05/2025

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADP3331ARTZ-REEL7	6-Lead SOT-23	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 8, 2025 - 24_0103 Qualification of Wafer Fabrication Site at Analog Devices, Inc. Camas for CBCMOS2 Products
		PCN24_0103_Form Material_Report Delta Qualification Matrix Qualification Results Summary
ADP3331ARTZ-REEL7	PRODUCTION
Dec 2, 2022 - 22_0253 Addition of UTAC Thailand as an Alternate Assembly Site for SOT23, SC70 and TSOT Packages/Devices
		PCN22_0253_Form Material_Report Detailed Change Description Qualification Results Summary
ADP3331ARTZ-REEL7	PRODUCTION
Feb 4, 2010 - 10_0009 Halogen Free Material Change for SOT_23 Products
		Material_Report PCN10_0009_Form SOT23 Qualification Data
ADP3331ARTZ-REEL7	PRODUCTION	Material_Report PCN10_0009_Form SOT23 Qualification Data

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts	Product Life Cycle	Description
ADP7102	RECOMMENDED FOR NEW DESIGNS	20 V, 300 mA, Low Noise, CMOS LDO

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ADP3331

Overview

Documentation

Data Sheet 1

User Guide 1

Application Note 2