The ISL78236 is a dual output, 3A/3A, integrated FET buck regulator for point-of-load power applications. The supply voltage range is from 2. 8V to 6V, allowing for the use of a single Li+ cell, three NiMH cells, or a regulated 3V/5V bus input. It is optimized for regulating output voltages down to 1. 2V. Each channel provides an output current up to 3A, which can be combined to form a single 6A output in current sharing mode. The two channels operate 180° out of phase to reduce input RMS current and EMI. The ISL78236 integrates a pair of low ON-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. It can operate up to 100% duty cycle to maximize operating life as battery voltage drops out. When supplying 3A on each channel, the 100% duty cycle operation limits the dropout voltage to less than 250mV. Other features include internal digital soft-start, independent channel enable for power sequencing, overcurrent protection, and thermal shutdown. The ISL78236 is offered in a 24 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 1. 5cm2 area. The ISL78236 is AEC - Q100 qualified and is rated for the automotive temperature range (-40°C to +105°C).


  • Dual 3A/3A independent outputs
  • 2.5MHz synchronous buck regulator with internal MOSFETs up to 95% efficiency
  • 2% voltage reference accuracy over-temperature
  • 6A current sharing mode operation
  • Internal or external compensation
  • Peak current limiting and hiccup mode short circuit protection
  • Reverse overcurrent protection
  • Over-temperature protection shutdown
  • AEC-Q100 qualified


  • DSP and embedded processor power supply
  • Infotainment system power
  • Automotive point of load power

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 75
Active QFN Reel 6000
Active QFN Reel 250


Title language Type Format File Size Date
Datasheets & Errata
star ISL78236 Datasheet Datasheet PDF 2.40 MB
User Guides & Manuals
ISL78236CRSHEVAL1Z User Guide Manual - Development Tools PDF 950 KB
ISL78236DUALEVAL1Z User Guide Manual - Development Tools PDF 951 KB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB


Title language Type Format File Size Date
ISL78236DUALEVAL1Z Design Files PCB Design Files ZIP 749 KB

memoryBoards & Kits

Part Number Title Type Company
ISL78236CRSHEVAL1Z Automotive High-Efficiency Synchronous Buck Regulator Evaluation Board Evaluation Renesas
ISL78236DUALEVAL1Z Dual 3A Current Sharing 2.5MHz High-Efficiency Synchronous Buck Regulator Evaluation Board Evaluation Renesas