The ISL8026, ISL8026A are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver 6A of continuous output current from a 2. 5V to 5. 5V input supply. The devices use current mode control architecture to deliver a very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8026, ISL8026A integrate a very low ON-resistance P-Channel (36mΩ) high-side FET and N-Channel (13mΩ) low-side FET to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 180mV dropout voltage at 6A output current. The operation frequency of the Pulse-width Modulator (PWM) is adjustable from 500kHz to 4MHz. The default switching frequency, which is set by connecting the FS pin high, is 1MHz for the ISL8026 and 2MHz for the ISL8026A. The ISL8026, ISL8026A can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference, while discontinuous mode provides higher efficiency by reducing switching losses at light loads. Fault protection is provided by internal hiccup mode current limiting during short-circuit and overcurrent conditions. Other protection, such as overvoltage and over-temperature, are also integrated into the device. A power-good output voltage monitor indicates when the output is in regulation. The ISL8026, ISL8026A offer a 1ms Power-good (PG) timer at power-up. When in shutdown, the ISL8026, ISL8026A discharge the output capacitor through an internal soft-stop switch. Other features include internal fixed or adjustable soft-start and internal/external compensation. The ISL8026, ISL8026A are offered in a space saving 16 Ld 3x3 Pb-free TQFN package with an exposed pad for improved thermal performance and 0. 8mm maximum height. The complete converter occupies less than 0. 22 in2 area.

Features

  • 2.5V to 5.5V input voltage range
  • Very low ON-resistance FET's - P-channel 36mΩ and N-channel 13mΩ typical values
  • High efficiency synchronous buck regulator with up to 95% efficiency
  • 1% reference accuracy over load/line/temperature (-40°C to +85°C)
  • Internal soft-start: 1ms or adjustable
  • Soft-stop output discharge during disable
  • Adjustable frequency from 500kHz to 4MHz - default at 1MHz (ISL8026) or 2MHz (ISL8026A)
  • External synchronization up to 4MHz
  • Over-temperature, overcurrent, overvoltage and negative overcurrent protection

Product Options

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

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL8026, ISL8026A Datasheet Datasheet PDF 1.47 MB
User Guides & Manuals
ISL8026xEVAL3Z User Guide Manual PDF 861 KB
Application Notes & White Papers
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
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB

Downloads

Title language Type Format File Size Date
Other
ISL8026EVAL3Z Design Files Design File ZIP 706 KB

Boards & Kits

Part Number Title Type Company
ISL8026AEVAL3Z Compact Synchronous Buck Regulator Evaluation Board Evaluation Renesas
ISL8026EVAL3Z Compact Synchronous Buck Regulator Evaluation Board Evaluation Renesas
VERSALDEMO1Z Xilinx Versal ACAP Demonstration Board Demonstration Renesas