The ISL8012 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 2A continuous output current from a 2. 7V to 5. 5V input supply. It uses a current control architecture to deliver very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8012 integrates a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 240mV dropout voltage at 2A output current. High 1MHz pulse width modulation (PWM) switching frequency allows the use of small external components. The ISL8012 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads. Fault protection is provided by internal current limiting during short circuit and overcurrent conditions, an output overvoltage comparator and over-temperature monitor circuit. A power-good output voltage monitor indicates when the output is in regulation. The ISL8012 offers a 1ms Power-good (PG) timer at power-up. When shutdown, ISL8012 discharges the output capacitor. Other features include internal soft-start, internal compensation, overcurrent protection, and thermal shutdown. The ISL8012 is offered in a space saving 3mmx3mm 10 Ld DFN package lead free package with exposed pad lead frames for low thermal. The complete converter occupies less than 0. 35in2area.

Features

  • High Efficiency Synchronous Buck Regulator with up to 95% Efficiency
  • Power-Good (PG) Output with a 1ms Delay
  • 2.7V to 5.5V Supply Voltage
  • 3% Output Accuracy Over-Temperature/Load/Line
  • 2A Guaranteed Output Current
  • Start-up with Pre-Biased Output
  • Internal Soft-Start - 1ms
  • Soft-Stop Output Discharge During Disabled
  • 40µA Quiescent Supply Current in PFM Mode
  • Selectable Forced PWM Mode and PFM Mode
  • Less than 1µA Logic Controlled Shutdown Current
  • 100% Maximum Duty Cycle
  • Internal Current Mode Compensation
  • Peak Current Limiting and Hiccup Mode Short Circuit Protection
  • Over-Temperature Protection
  • Small 10 Ld 3mmx3mm: DFN
  • Pb-Free (RoHS Compliant)

Applications

  • DC/DC POL Modules
  • µC/µP, FPGA and DSP Power
  • Plug-in DC/DC Modules for Routers and Switchers
  • Portable Instruments
  • Test and Measurement Systems
  • Li-ion Battery Powered Devices
  • Small Form Factor (SFP) Modules
  • Bar Code Readers

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Tube 100
Availability
Active DFN Reel 6000
Availability
Active DFN Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL8012 Datasheet Datasheet PDF 1.63 MB
User Guides & Manuals
ISL8012EVAL1Z User Guide Manual PDF 479 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN9208: High Frequency Power Converters Application Note PDF 592 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN9210: A New Pspice Subcircuit For The Power MOSFET Featuring Global Temperature Options Application Note PDF 650 KB
AN9209: A Spice-2 Subcircuit Representation For Power MOSFETs Using Empirical Methods Application Note PDF 387 KB
AN7244: Understanding Power MOSFETs Application Note PDF 349 KB
PCNs & PDNs
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
Other
ISL8012 iSim:PE Model Schematic SXSCH 181 KB

Software & Tool Pages

Title Type Description Company
iSim:PE Offline Simulation Tool Simulator iSim Personal Edition (iSim:PE) speeds the design cycle and reduces risk early in any project, identifying parts that can be used in current as well as next-generation designs. Renesas

Boards & Kits

Part Number Title Type Company
ISL8012EVAL1Z 2A Low Quiescent Current 1MHz High-Efficiency Synchronous Buck Regulator Evaluation Board Evaluation Renesas