The ZL2005 is an innovative mixed-signal power management and conversion 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 ZL2005 is designed to be a flexible building block for DC power and can be easily adapted to designs ranging from a single-phase power supply operating from a 3. 3 V input to a multi-phase supply operating from a 12 V input. The ZL2005 eliminates the need for complicated power supply managers as well as numerous external discrete components. All operating features can be configured by simple pin-strap selection, resistor selection or through the on-board serial port. The PMBus™-compliant ZL2005 uses the SMBus™ serial interface for communication with other Digital-DC products or a host controller.


  • Power Management
  • Digital soft start/stop
  • Precision delay and ramp-up
  • Power good/enable
  • Voltage tracking, sequencing and margining
  • Voltage/current/temperature monitoring
  • I2C/SMBus communication
  • Output overvoltage and overcurrent protection
  • PMBus compliant Power Conversion
  • Efficient synchronous buck controller
  • 3 V to 14 V input range
  • 0.6 V to 5.5 V output range
  • ±1% output accuracy
  • Internal 3 A drivers support >30 A power stage
  • Fast load transient response
  • Phase interleaving
  • RoHS compliant (6 x 6 mm) QFN package


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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 50
Active QFN Reel 100
Active QFN Reel 1000

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZL2005 Datasheet Datasheet PDF 1.61 MB
User Guides & Manuals
PMBus Interface Install Guide - Win7 x86 and x64 Manual PDF 693 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
PCN11021 - Data Sheet Specification Change for Intersil Product ZL2005* Product Change Notice PDF 79 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
PCN11007 - Packing Method Change for Intersil ZLxxxx QFN Packaged Products Product Change Notice PDF 131 KB
PCN10048 - Alternate Manufacturing Site for the Listed Intersil Pb-Free QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 73 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
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB
Digital-DC Frequently Asked Questions (FAQ) Other PDF 194 KB