The ISL95908 is a Power Management Integrated Circuit (PMIC) for ultrabook, notebook, and tablet computers powered by 2-cell Li-ion batteries. It integrates control, MOSFET drivers, power MOSFETs, fault protection, and fault monitoring functions for eight highly efficient synchronous buck regulators and VTT LDO. It is offered in a thermally efficient 5.5mm x 5.5mm, 121-bump, 0. 5mm pitch WLCSP package. The PMIC regulators convert system voltage from the battery or adapter into all platform voltages needed for a typical computer system including 5V and 3.3V system regulators, 1.8V/2.5V, 1V, 0.975V, 0.9V for controller-hub, peripheral and core voltages, as well as programmable VDDQ and VTT regulators for DDR3/3U/3L, LPDDR3, and DDR4 voltages. The switching regulators operate at 1MHz and are based on Intersil’s proprietary R4™ Technology, which provides high light-load efficiency, fast transient response, seamless DCM/CCM transitions, and requires no external compensation. The PMIC provides overcurrent, overvoltage and over-temperature fault protections, and undervoltage and over-temperature warnings. A temperature alert signal indicates the PMIC is operating at an elevated temperature and ALERT indicates if any other fault or warning has occurred. The PMIC also offers significant I2C capability and can be configured to provide eight GPIO pins for additional system functionality and each regulator has an independent power-good indicator.

Features

  • Highly integrated power management IC
  • Efficient 1MHz integrated FET switching regulators
  • Internal compensation, no external compensation
  • Computer system platform voltage regulators 5V, 3.3V, 1.8V/2.5V, 1V, 0.975V, 0.9V
  • Programmable VR3 and VTT regulators for memory (DDR3/L/U, LPDDR3, and DDR4)
  • Extensive fault protection
  • Overcurrent protection
  • Over-temperature protection
  • Overvoltage and undervoltage protection
  • Temperature alert signal
  • Independent power-good indicator for each regulator
  • Independent enable signals for each regulator for maximum sequencing flexibility
  • Low power consumption mode for connected standby
  • I2C bus allows system fault monitoring, enable control, and configurable GPIO programming
  • Output voltage offset programming through I2C
  • Configuration pin provides additional system programming options

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active WLCSP-TCURDL Reel 3000
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL95908 Datasheet Datasheet PDF 1.41 MB
ISL95908 Data Short Short Form Datasheet PDF 195 KB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
Other
TB500: Computing Power Reference Design Adaptation Guide Other PDF 351 KB
TB501: Computing Power Regulator Layout Checklist Other PDF 366 KB