The ISL62391 controller generates supply voltage for battery-powered systems. It includes two pulse-width modulation (PWM) controllers, adjustable from 0. 6V to 5. 5V, and a linear regulator (LDO3) that generates a fixed 3. 3V and can deliver up to 100mA. The ISL62391 includes on-board power-up sequencing, a power-good (PGOOD) output, digital soft-start, and internal soft-stop output discharge that prevents negative voltages on shutdown. The patented R3 PWM control scheme provides a low jitter system with fast response to load transients. Light-load efficiency is improved with period-stretching discontinuous conduction mode (DCM) operation. To eliminate noise in audio frequency applications, an ultrasonic DCM mode is included, which limits the minimum switching frequency to 28kHz. The ISL62391, ISL62391C and ISL62392, ISL62392C are identical except for how their overvoltage protection is handled. The ISL62391 utilizes a tri-state overvoltage scheme, whereas the ISL62392 employs a soft-crowbar method. The ISL62391 is available in a 28 Ld 4x4 TQFN package and operates over the extended temperature range (-40°C to +100°C).

Features

  • High Performance R3 Technology
  • Fast Transient Response
  • ±1% Output Voltage Accuracy
  • 2 Fully Programmable Switch-Mode Power Supplies
  • Programmable Switching Frequency
  • Fixed 3.3V LDO Output
  • Internal Soft-Start and Soft-Stop Output Discharge
  • Wide Input Voltage Range: 5.5V to 25V
  • Full and Ultrasonic Pulse-Skipping Mode
  • Power-Good Indicator
  • Overvoltage, Undervoltage and Overcurrent Protection
  • Thermal Monitor and Protection
  • Pb-Free (RoHS Compliant)

Applications

  • Notebook and Sub-Notebook Computers
  • PDAs and Mobile Communication Devices
  • 3-Cell and 4-Cell Li+ Battery-Powered Devices

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFN Tube 75
Availability
Active TQFN Reel 6000
Availability
Active TQFN Tube 75
Availability
Active TQFN Reel 6000
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL62391, ISL62392, ISL62391C, ISL62392C Datasheet Datasheet PDF 1.12 MB
User Guides & Manuals
ISL62391xxEVAL1Z, ISL62392xxEVAL1Z User Guide Manual PDF 968 KB
ISL8200MEVAL2PHZ User Guide Manual PDF 683 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
How Green is Your Cloud? White Paper PDF 295 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
PCNs & PDNs
PCN14036 - Wafer fabrication Site Change for Listed Intersil Products - Palm Bay, Florida Product Change Notice PDF 294 KB
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
PCN13025 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and STATS ChipPAC (SCM) - Kuala Lumpur, Mal Product Change Notice PDF 106 KB
PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump Product Change Notice PDF 173 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB

Boards & Kits

Part Number Title Type Company
ISL62391HIEVAL1Z High-Efficiency Triple-Output System Power Supply Controller for Notebook Computers Evaluation Board Evaluation Renesas
ISL62391LOEVAL1Z High-Efficiency Triple-Output System Power Supply Controller for Notebook Computers Evaluation Board Evaluation Renesas