Overview
Features and Benefits
- High Performance 5A Linear Regulator with Switching Step-Down Converter for High Efficiency
- Digitally Programmable VOUT: 0.8V to 1.8V
- Input Voltage Range: 6V to 36V
- Very Tight Tolerance Over Temperature, Line, Load and Transient Response
- Low Output Noise: 40μVRMS (10Hz to 100kHz)
- Parallel Multiple Devices for 10A or More
- Accurate Programmable Current Limit to Allow Asymmetric Power Sharing
- Analog Output Margining: ±10% Range
- Synchronization Input
- Stable with Low ESR Ceramic Output Capacitors
- 15mm × 15mm × 4.92mm Surface Mount BGA Package
- SnPb or RoHS Compliant Finish
Product Details
The LTM8028 is a 36VIN, 5A μModule® (power module) regulator, consisting of an UltraFast™ 5A linear regulator preceded by a high efficiency switching regulator. In addition to providing tight output regulation, the linear regulator automatically controls the output voltage of the switcher to provide optimal efficiency and headroom for dynamic response.
The output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. An analog margining function allows the user to adjust system output voltage over a continuous ±10% range, and a single-ended feedback sense line may be used to mitigate IR drops due to parasitic resistance.
The LTM8028 is packaged in a compact (15mm × 15mm × 4.92mm) overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8028 is available with SnPb (BGA) or RoHS compliant terminal finish.
Applications
- FPGA and DSP Supplies
- High Speed I/O
- ASIC and Microprocessor Supplies
- Servers and Storage Devices
Product Categories
Markets and Technologies
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
-
R598 Reliability Data3/26/2018PDF41 K
-
DC1738A - Demo Manual4/29/2013PDF903K
-
SnPb (Tin-Lead) BGA Packages μModule Power Products7/13/2017PDF1M
-
μModule Power Products4/4/2017PDF10M
-
LTM8028 TechClip - Load Regulation3/3/2022
-
LTM8028 TechClip - Power Loss and Thermal3/3/2022
-
LTM8028 TechClip - Output Noise Spectrum3/3/2022
-
LTM8028 TechClips - 36VIN, UltraFast, Low Output Noise 5A μModule Regulator1/24/2018
-
36V Input, Low Output Noise, 5A μModule Regulator for Precision Data Acquisition Systems9/1/2013
-
High Efficiency Switching Power Conversion Combined with Low Noise Linear Regulation in µModule Package7/1/2013 LT Journal
Tools & Simulations
LTspice
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.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Models for the following parts are available in LTspice:
Product Recommendations
LTM8028 Companion Parts
Recommended Related Parts
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
---|---|---|---|---|
LTM8028EY#PBF | Material Declaration | Reliability Data | 114-Lead BGA (15mm x 15mm x 4.92mm) | |
LTM8028IY | Material Declaration | Reliability Data | 114-Lead BGA (15mm x 15mm x 4.92mm) | |
LTM8028IY#PBF | Material Declaration | Reliability Data | 114-Lead BGA (15mm x 15mm x 4.92mm) | |
LTM8028MPY | Material Declaration | Reliability Data | 114-Lead BGA (15mm x 15mm x 4.92mm) | |
LTM8028MPY#PBF | Material Declaration | Reliability Data | 114-Lead BGA (15mm x 15mm x 4.92mm) | |
Wafer Fabrication Data | R598 Reliability Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.