ISL8033 is a dual integrated power controller rated for 3A per channel with a 1MHz step-down regulator that is ideal for any low power low-voltage applications. The ISL8033A offers 2. 5MHz operation for smaller more compacted design. The channels are 180° out-of-phase for input RMS current and EMI reduction. It is optimized for generating low output voltages down to 0. 8V each. The supply voltage range is from 2. 85V to 6V, allowing for the use of a single Li+ cell, three NiMH cells or a regulated 5V input. It has a guaranteed minimum output current of 3A each when ISET is connected to VDD. The output current of each output is selectable by setting ISET pin. The ISL8033, ISL8033A includes a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. 100% dutycycle operation allows less than 250mV dropout voltage at 3A. The ISL8033, ISL8033A offers an independent 1ms Power-Good (PG) timer at power-up. When shutdown, ISL8033, ISL8033A discharges the output capacitor. Other features include internal digital soft-start, enable for power sequence, controllable softstop output discharge during disabled, start-up with pre-biased output, 100% maximum duty cycle for lowest dropout, 100% duty cycle operation for smooth transition, less than 8µA logic controlled shutdown current, independent enable, overcurrent protection, and thermal shutdown. The ISL8033, ISL8033A is offered in a 24 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 5. 46cm2 area.


  • Dual 3A High Efficiency Synchronous Buck Regulator with up to 95% Efficiency
  • 2% Output Accuracy Over-Temperature/Load/Line
  • Internal Digital Soft-Start - 1.5ms
  • External Synchronization up to 6MHz (ISL8033)
  • Internal Current Mode Compensation
  • Peak Current Limiting and Hiccup Mode Short Circuit Protection
  • Adjustable Peak Overload Current
  • Negative Current Protection
  • Pb-Free (RoHS Compliant)


  • DC/DC POL Modules
  • µC/µP, FPGA and DSP Power
  • Plug-in DC/DC Modules for Routers and Switchers
  • Test and Measurement Systems
  • Li-ion Battery Power Devices
  • Bar Code Readers


Title language Type Format File Size Date
star ISL8033, ISL8033A Datasheet 日本語 Datasheet PDF 2.12 MB
ISL8033DEMO1Z User Guide Manual - Development Tools PDF 226 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
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products Product Change Notice PDF 326 KB
ISL8033 iSim:PE Model Schematic SXSCH 178 KB


Title language Type Format File Size Date
ISL8033DEMO1Z Design Files PCB Design Files ZIP 294 KB

select_allSoftware & 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

memoryBoards & Kits

Part Number Title Type Company
ISL8033AEVAL1Z Dual 3A Low Quiescent Current High-Efficiency Synchronous Buck Regulator Evaluation Board Evaluation Renesas