The ISL80030, ISL80030A, ISL80031, and ISL80031A are highly efficient, monolithic, synchronous step-down DC/DC converters that can deliver up to 3A of continuous output current from a 2. 7V to 5. 5V input supply. They use peak current mode control architecture to allow very low duty cycle operation. These devices operate at either a 1MHz or 2MHz switching frequency, thereby providing superior transient response and allowing for the use of small inductors. They also have excellent stability. The ISL80030, ISL80030A, ISL80031, and ISL80031A integrate very low rDS(ON) MOSFETs to maximize efficiency. In addition, because the high-side MOSFET is a PMOS, the need for a Boot capacitor is eliminated, thereby reducing external component count. The devices can operate at 100% duty cycle. The ISL80030 and ISL80030A are configured for PWM pulse width modulation operation and provide a fast transient response, which helps reduce the output noise and RF interference. The ISL80031 and ISL80031A are configured for PFM discontinuous conduction operation and provide high efficiency by reducing switching losses at light loads. These devices are offered in a space saving 8 Ld 2mmx2mm DFN Pb-free package with exposed pad for improved thermal performance. The complete converter occupies less than 64mm2 area.

Features

  • VIN range 2.7V to 5.5V
  • Up to 3A of output current
  • Switching frequency of 1MHz or 2MHz
  • 35μA quiescent current (ISL80031 and ISL80031A)
  • Overcurrent and short-circuit protection
  • Over-temperature/thermal protection
  • Negative current protection
  • Power-good and enable
  • 100% duty cycle
  • Internal soft-start and soft-stop
  • VIN undervoltage lockout and VOUT overvoltage protection
  • Up to 95% peak efficiency

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active DFN Reel 1000
Availability
Active DFN Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL80030, ISL80030A, ISL80031, ISL80031A Datasheet Datasheet PDF 1.36 MB
User Guides & Manuals
ISL8003xDEMO1Z User Guide Manual PDF 574 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
Other
PA17050 - Datasheet specification change for Listed Intersil ISL80030*, ISL80030A*, ISL80031*, ISL80031A* products Product Advisory PDF 85 KB

Boards & Kits

Part Number Title Type Company
ISL80030ADEMO1Z 3A Synchronous Buck Converter Demonstration Board Demonstration Renesas
ISL80030DEMO1Z 3A Synchronous Buck Converter Demonstration Board Demonstration Renesas
ISL80031ADEMO1Z 3A Synchronous Buck Converter Demonstration Board Demonstration Renesas
ISL80031DEMO1Z 3A Synchronous Buck Converter Demonstration Board Demonstration Renesas