The ISL8002B is a highly efficient, monolithic, synchronous step-down DC/DC converter that can deliver up to 2A of continuous output current from a 2. 7V to 5. 5V input supply. It uses peak current mode control architecture to allow very low duty cycle operation. ISL8002B operates at a 2MHz switching frequency, thereby providing superior transient response and allowing for the use of a small inductor. ISL8002B also has excellent stability. The ISL8002B integrates very low rDS(ON) MOSFETs in order to maximize efficiency. In addition, since the high-side MOSFET is a PMOS, the need for a boot capacitor is eliminated, thereby reducing external component count. The device can be configured for either PFM (discontinuous conduction) or PWM (continuous conduction) operation at light load. PFM provides high efficiency by reducing switching losses at light loads and PWM for fast transient response, which helps reduce the output noise and RF interference. The device is offered in a space saving 8 Ld 2mmx2mm TDFN Pb-free package with exposed pad for improved thermal performance. The complete converter occupies less than 64mm2 area.


  • VIN range 2.7V to 5.5V
  • IOUT maximum is 2A
  • External soft-start programmable
  • Output tracking and sequencing
  • Switching frequency is 2MHz
  • Selectable PFM or PWM operation option
  • Overcurrent and short-circuit protection
  • Over-temperature/thermal protection
  • VIN undervoltage lockout and VOUT overvoltage protection
  • Up to 95% peak efficiency

tuneProduct Options

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


Title language Type Format File Size Date
Datasheets & Errata
star ISL8002B Datasheet Datasheet PDF 1.87 MB
User Guides & Manuals
ISL8002BDEMO1Z User Guide Manual - Development Tools PDF 751 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
How to Configure the Tracking and Power Sequencing of FPGAs White Paper PDF 526 KB
AN9208: High Frequency Power Converters Application Note PDF 592 KB
AN1965: Effectively Using the Intersil Small Form Factor Power Management Evaluation Boards Application Note PDF 2.35 MB
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
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products Product Change Notice PDF 327 KB


Title language Type Format File Size Date
ISL8002BDEMO1Z Design Files PCB Design Files ZIP 541 KB

memoryBoards & Kits

Part Number Title Type Company
ISL8002BDEMO1Z Compact Synchronous Buck Regulator Demonstration Board Demonstration Renesas