ADP1708

PRODUCTION

1 A, Low Dropout, CMOS Linear Regulator

Data Sheet (Rev. C) Product Selection Table

Part Models: 2
1ku List Price: Starting From $1.32

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Overview

Maximum output current: 1 A
Input voltage range: 2.5 V to 5.5 V
Low shutdown current: <1 μA
Low dropout voltage: 345 mV @ 1 A load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2.5%

16 fixed output voltage options with soft start: 0.75 V to 3.3 V (ADP1706)
16 fixed output voltage options with tracking 0.75 V to 3.3 V (ADP1707)
Adjustable output voltage option: 0.8 V to 5.0 V (ADP1708)
Stable with small 4.7 μF ceramic output capacitor
Excellent load/line transient response
Current limit and thermal overload protection

The ADP1706/ADP1707/ADP1708 are CMOS, low dropout linear regulators that operate from 2.5 V to 5.5 V and provide up to 1 A of output current. Using an advanced proprietary architecture, they provide high power supply rejection and achieve excellent line and load transient response with a small 4.7 μF ceramic output capacitor.

The ADP1706/ADP1707 are available in 16 fixed output volt-age options. The ADP1708 is available in an adjustable version, which allows output voltages that range from 0.8 V to 5.0 V via an external divider. The ADP1706 allows an external soft start capacitor to be connected to program the start-up time; the ADP1707 and ADP1708 contain internal soft start capacitors that give a typical start-up time of 100 μs. The ADP1707 includes a tracking feature that allows the output to follow an external voltage rail or reference.

The ADP1706/ADP1707/ADP1708 are available in an 8-lead, exposed paddle SOIC package and an 8-lead, 3 mm × 3 mm exposed paddle LFCSP, making them not only very compact solutions but also providing excellent thermal performance for applications requiring up to 1 A of output current in a small, low profile footprint.

Applications

Notebook computers
Memory components
Telecommunications equipment
Network equipment
DSP/FPGA/microprocessor supplies
Instrumentation equipment/data acquisition systems

Part Models: 2
1ku List Price: Starting From $1.32

Documentation

Data Sheet 1

ADP1706/ADP1707/ADP1708: 1 A, Low Dropout, CMOS Linear Regulator Data Sheet (Rev.C) 06/01/2007

User Guide 1

EVAL-ADP1706/ADP1707/ADP1708 User Guide 02/15/2015

Application Note 1

AN-1072: How to Successfully Apply Low Dropout Regulators 04/27/2010

Technical Articles 1

Powering High Speed Analog-to-Digital Converters with Switching Power Supplies 02/01/2010

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
ADP1708ACPZ-R7	8-Lead LFCSP (3mm x 3mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP1708ARDZ-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 13, 2014 - 14_0038 Conversion of 3x3mm body Size LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to Amkor Philippines.
		PCN14_0038_Form Material_Report Detailed Change Description Package Outline Drawing Qualification Report Summary
ADP1708ACPZ-R7	PRODUCTION
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.
		PCN04_0080_Form Material_Report Reliability Report Reliability Report
ADP1708ACPZ-R7	PRODUCTION
ADP1708ARDZ-R7	PRODUCTION
Jun 3, 2025 - 25_0152 ADP1706/ADP1707/ADP1708 Package Outline Drawing and Data Sheet Revision
		PCN25_0152_Form Material_Report Package Outline Drawing
ADP1708ARDZ-R7	PRODUCTION	PCN25_0152_Form Material_Report Package Outline Drawing
Nov 23, 2010 - 10_0004 Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor
		PCN10_0004_Form Material_Report ADI0012 Reliability Report
ADP1708ARDZ-R7	PRODUCTION

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

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
LT1965	RECOMMENDED FOR NEW DESIGNS	1.1A, Low Noise, Low Dropout Linear Regulator
LT3080	RECOMMENDED FOR NEW DESIGNS	Adjustable 1.1A Single Resistor Low Dropout Regulator

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

ADP1708

ADI Linear Regulator Design Tool and Parametric Search

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

ADP1708 Evaluation Board

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Product Details

These evaluation boards are used to demonstrate the functionality of the ADP1708 linear regulators.

Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage supply, a voltmeter, a current meter, and load resistors.

Resources

EVAL-ADP1706/ADP1707/ADP1708 User Guide
2/15/2015

Reference Designs

Figure 1. CN0582 Simplified System Block Diagram

USB 3.0 Quad-Channel IEPE Vibration Sensor Measurement System

View Detailed Reference Design

Features and Benefits

4-Channels of Analog Input
IEPE, 4-20mA Sensor Compatible
Frequency Generator Output

Part Used

Design & Integration Tools

CN0582 Design Files
11.22 M

Videos

VIDEO Â· 2023-03-07 01:00

CN0582: USB 3.0 Quad-Channel IEPE Vibration Sensor Measurement System

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