The ISL9238 is a buck-boost Narrow Output Voltage DC (NVDC) charger. The ISL9238 provides the NVDC charging, system bus regulation and protection features for tablet, Ultrabook, notebook, power bank, and any USB-C interface platform. The advanced Renesas R3™ Technology provides high light-load efficiency and fast transient response. In Charging mode, the ISL9238 takes input power from a wide range of DC power sources (such as conventional AC/DC charger adapters, USB PD ports, and travel adapters) and safely charges battery packs with up to 4-series cell Li-ion batteries. As a NVDC topology charger, it also regulates the system output to a narrow DC range for stable system bus voltage. The system power can be provided from the adapter, battery, or a combination of both. The ISL9238 can operate with only a battery, only an adapter, or both connected. For Intel IMVP8 compliant systems the ISL9238 includes System Power monitor (PSYS) functionality, which provides an analog signal representing total platform power. The PSYS output connects to a wide range of IMVP8 core regulators to provide an IMVP8 compliant power domain function. The ISL9238 supports reverse buck, boost, or buck-boost operation to input port from 2- to 4-cell batteries. The ISL9238 has serial communication using SMBus/I2C that allows programming of many critical parameters to deliver a customized solution.

Features

  • Buck-boost NVDC charger for 1-, 2-, 3-, or 4-cell Li-ion batteries
  • Input voltage range 3.2V to 23.4V (no dead zone)
  • System output voltage 2.4V to 18.304V
  • Autonomous charging option (automatic end of charging)
  • System power monitor PSYS output, IMVP compliant
  • Up to 1MHz switching frequency
  • Adapter current and battery current monitor (AMON/BMON)
  • PROCHOT# open-drain output, IMVP compliant
  • Allows trickle charging of a depleted battery
  • Ideal diode control in Turbo mode
  • Reverse buck, boost, and buck-boost operation from battery
  • Two-level adapter current limit available
  • Battery Ship mode option
  • SMBus and auto-increment I2C compatible
  • 4mm x 4mm 32 Ld TQFN package

Applications

  • 1 to 4-cell tablets
  • Ultrabooks
  • Notebooks
  • Power banks
  • Any USB-C interface portable device requiring batteries

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFN Tube 75
Availability
Active TQFN Reel 6000
Availability
Active TQFN Reel 250
Availability
Active TQFN Reel 1000
Availability
Active TQFN Tube 75
Availability
Active TQFN Reel 6000
Availability

descriptionDocumentation

Title language Type Format File Size Date
Datasheets & Errata
star ISL9238 Data Short Datasheet - Short-form PDF 201 KB
ISL9238 Datasheet Datasheet PDF 2.23 MB
User Guides & Manuals
ISL9238EVAL1Z User Guide Manual - Development Tools PDF 1.78 MB
Application Notes & White Papers
Five Easy Steps to Create a Multi-Load Power Solution White Paper PDF 846 KB
Understanding USB-C Buck-Boost Battery Charging 简体中文 White Paper PDF 439 KB
Inside a New Architecture for USB Type-C Applications White Paper PDF 320 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCNs & PDNs
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products Product Change Notice PDF 327 KB
PCN21005 - Alternate assembly facility of the listed Renesas DFN / QFN / TDFN / TQFN packaged products Product Change Notice PDF 158 KB
PCN18012 - Product Improvement - Design and Datasheet Change for the Listed ISL9238*, ISL9538HRTZ* and ISL88738HRTZ* Products Product Change Notice PDF 280 KB
PCN17048A - Datasheet Change for the Listed Intersil Charger Products - Cancelled Product Change Notice PDF 226 KB
PCN17048 - Datasheet Change for the Listed Intersil Charger Products Product Change Notice PDF 222 KB
PA17043 - Product Improvement - Design and Datasheet Change for the Listed Intersil ISL9238* Products Product Advisory PDF 358 KB

file_downloadDownloads

Title language Type Format File Size Date
Software
ISL9238, ISL9238A Software Library ZIP 516.35 MB
Hardware
ISL9238EVAL1Z Design Files PCB Design Files ZIP 1.90 MB

memoryBoards & Kits

Part Number Title Type Company
ISL9238EVAL1Z Buck-Boost Narrow VDC Battery Charger with SMBus Interface and USB OTG Evaluation Board Evaluation Renesas