The ZL2005P is an innovative mixed-signal power conversion and management IC that combines a compact, efficient, synchronous DC-DC buck controller, adaptive drivers and key power and thermal management functions in one IC, providing flexibility and scalability while decreasing board space requirements and design complexity. Zilker Labs' Digital-DC technology enables a unique blend of performance and features not available in either traditional analog or newer digital approaches, resolving the issues associated with providing multiple low-voltage power domains on a single PCB. The ZL2005P is designed to be configured either as a standard ZL2005 or as POLA/DOSA compatible device. All operating features can be configured by simple pin-strap selection, resistor selection or through the on-board serial port. The PMBus™-compliant ZL2005P uses the SMBus™ serial interface for communication with other Digital-DC products or a host controller.


  • Power Conversion
  • Efficient synchronous buck controller
  • 3 V to 14 V input range
  • 0.54 V to 5.5 V output range (with margin)
  • Optional output voltage setting with VADJ pin
  • ± 1% output accuracy
  • Internal 3 A drivers support >40 A power stage
  • Fast load transient response
  • Phase interleaving
  • RoHS compliant (6 x 6 mm) QFN package Power Management
  • Digital soft start/stop
  • Precision delay and ramp-up
  • Voltage tracking, sequencing and margining
  • Voltage/current/temperature monitoring
  • I2C/SMBus communication
  • Output overvoltage and overcurrent protection
  • Internal non-voltatile memory (NVM)
  • PMBus compliant


  • Servers/storage equipment
  • Telecom/datacom equipment
  • Power supplies (memory, DSP, ASIC, FPGA)

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Reel 100
Active QFN Reel 1000

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZL2005P Datasheet Datasheet PDF 2.40 MB
User Guides & Manuals
PMBus Interface Install Guide - Win7 x86 and x64 Manual PDF 693 KB
ZL2005PEV4 User Guide Manual PDF 384 KB
ZLUSBREF01 User Guide Manual PDF 704 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN2018: The ZL_PMBus API Programmer's Guide Application Note PDF 805 KB
AN2017: Non Linear Response Application Note PDF 391 KB
AN2016: Digital-DC Control Loop Compensation Application Note PDF 621 KB
AN2023: Voltage Tracking with the ZL2005 Application Note PDF 262 KB
AN2015: Current Protection and Measurement Application Note PDF 767 KB
AN2013: Zilker Labs PMBus Command Set Application Note PDF 441 KB
AN2024: Clock Sourcing and Phase Spreading Application Note PDF 145 KB
AN2028: Loading Configuration Files in a Manufacturing Environment Application Note PDF 528 KB
AN2014: System Design Using Digital-DC Devices Application Note PDF 589 KB
AN2011: ZL2005 Component Selection Guide Application Note PDF 752 KB
AN2022: Autonomous Sequencing Technology Application Note PDF 232 KB
AN2010: Thermal and Layout Guidelines for Digital-DC Products Application Note PDF 1.43 MB
AN2030: Configuring a Device via the SMBus Application Note PDF 686 KB
AN2026: PowerNavigator User Guide Application Note PDF 1.08 MB
AN2031: Writing Configuration Files for Intersil Digital Power Application Note PDF 1.01 MB
AN2036: ZLHLD Generator User Guide Application Note PDF 213 KB
AN2029: ConfigZL User Guide Application Note PDF 306 KB
AN2027: CompZL User Guide Application Note PDF 559 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCN16089A - Alternate assembly facility of the listed Intersil DFN / QFN packaged products Product Change Notice PDF 124 KB
PCN15017 - This notice is to advise our customers of a minor silicon design revision Product Change Notice PDF 235 KB
PCN11018 - Alternate Manufacturing Sites for Intersil ZL2005*, ZL2006*, ZL2008, ZL2105*, and ZL6100* Products - Jazz Semiconductor Newport Beach, CA and STATS ChipPAC Malaysia Product Change Notice PDF 170 KB
PCN10104 - Alternate Manufacturing Site for the Listed Intersil ZL2005* and ZL2008* Products - STATS ChipPAC Malaysia Product Change Notice PDF 36 KB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
PMBus Conversion Software Tool Library ZIP 54.93 MB
ZLHLD Software v2.9 Library ZIP 119.19 MB
CompZL Software v1.5.1 Library ZIP 59.25 MB
PowerPilot Software GUI Library ZIP 435 KB
USB Drivers for the ZLUSBEVAL1Z (Windows 7) Library ZIP 1.75 MB
USB Drivers for the ZLUSBEVAL1Z (Windows XP/Vista) Library ZIP 166 KB
Digital-DC Frequently Asked Questions (FAQ) Other PDF 194 KB

Boards & Kits

Part Number Title Type Company
ZLUSBEVAL1Z USB to SMBus Adapter and Cable Evaluation Renesas