ISL62392C: High-Efficiency, Triple-Output System Power Supply Controller for Notebook Computers

The ISL62392C 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 ISL62392C 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 identicalexcept for how their overvoltage protection is handled. The ISL62391C utilizes a tri-state overvoltage scheme, whereas the ISL62392C employs a soft-crowbar method.

The ISL62392C is available in a 28 Ld 4x4 TQFN package and operates over the extended temperature range
(-40°C to +100°C).

Key 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
Typical Diagram
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL62391, ISL62392, ISL62391C, ISL62392C DatasheetPDF25 Aug 2015609 KB
White Papers
TitleTypeUpdatedSizeOther Languages
Five Easy Steps to Create a Multi-Load Power SolutionPDF30 Jan 2017502 KB
How Green is Your Cloud?PDF05 May 2015275 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL62392CHRTZ28 Ld TQFN0.037283260RoHS
ISL62392CHRTZ-T28 Ld TQFN T+R0.037283260RoHS
ISL62392CIRTZ28 Ld TQFN0.037283260RoHS
ISL62392CIRTZ-T28 Ld TQFN T+R0.037283260RoHS
ISL62391, ISL62392, ISL62391C, ISL62392C Datasheet 25 Aug 2015
28 Ld TQFN T+R ISL62392C
ISL62392C
Five Easy Steps to Create a Multi-Load Power Solution 30 Jan 2017
How Green is Your Cloud? 05 May 2015