ADP123
ADP123
PRODUCTION5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator, Adjustable Output Voltage
- Part Models
- 2
- 1ku List Price
- Starting From $0.48
Viewing:
Overview
- Input voltage supply range:
- 2.3 V to 5.5 V
- 300 mA maximum output current
- Fixed and adjustable output voltage versions
- Very low dropout voltage:
85 mV at 300 mA load
- Low quiescent current:
45 μA at no load - Low shutdown current: <1 μA
- Initial accuracy: ±1% accuracy
- See Data Sheet for additional features
The ADP122 / ADP123 are low quiescent current, low dropout linear regulators. They are designed to operate from an input voltage between 2.3 V and 5.5 V and to provide up to 300 mA of output current. The low 85 mV dropout voltage at a 300 mA load improves efficiency and allows operation over a wide input voltage range.
The low 170 μA of quiescent current at full load makes the ADP122 ideal for battery-operated portable equipment.
The ADP122 is capable of 31 fixed output voltages from 1.75 V to 3.3 V. The ADP123 is the adjustable version of the device and allows the output voltage to be set between 0.8 V and 5.0 V by an external voltage divider.
The ADP122 / ADP123 are specifically designed for stable operation with tiny 1 μF ceramic input and output capacitors to meet the requirements of high performance, space constrained applications.
The ADP122 / ADP123 have an internal soft start that gives a constant start-up time of 350 μs. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP122 / ADP123 are available in a tiny, 5-lead TSOT package and 6-lead LFCSP package for the smallest footprint solution to meet a variety of portable applications.
APPLICATIONS
- Digital camera and audio devices
- Portable and battery-powered equipment
- Automatic meter reading (AMR) meters
- GPS and location management units
- Medical instrumentation
- Point-of-sale equipment
Documentation
Data Sheet 1
User Guide 1
Application Note 2
Frequently Asked Question 1
Brochure 1
Device Drivers 1
Analog Dialogue 1
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 |
|---|---|---|---|
| ADP123ACPZ-R7 | 6-Lead LFCSP (2mm x 2mm w/ EP) | ||
| ADP123AUJZ-R7 | 5-Lead TSOT |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 8, 2022 - 22_0192 Qualification of an Alternate Adhesive Material and Molding Compound for Select LFCSP Packages |
||
| ADP123ACPZ-R7 | PRODUCTION | |
|
Oct 18, 2016 - 16_0036 Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products |
||
| ADP123ACPZ-R7 | PRODUCTION | |
|
Aug 6, 2014 - 13_0244 Assembly and Test Transfer of Select 2x2 and 1.6x1.6 mm Mini-LFCSP Products to STATS ChipPAC China |
||
| ADP123ACPZ-R7 | PRODUCTION | |
|
Jul 23, 2026 - 2026-0080 ASSEMBLY |
||
| ADP123AUJZ-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADP172 | RECOMMENDED FOR NEW DESIGNS | 300 mA, Low Quiescent Current, CMOS Linear Regulator |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- ADP123
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.
Open ToolLTspice® 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
ADP123 Evaluation Board
Resources
Xilinx Zynq®-7000 All Programmable SoC Evaluation Kit