Power & Power Management

Overview

The ISL9538C is a buck-boost Narrow Output Voltage DC (NVDC) charger. The ISL9538C provides NVDC charging, system bus regulation, and protection features for tablets, Ultrabooks, notebooks, power banks, and any USB-C interface platform. The advanced Renesas R3™ technology provides high light-load efficiency and fast transient response. In Charging mode, the ISL9538C accepts 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 an NVDC topology charger, the ISL9538C also regulates the system output to a narrow DC range for stable system bus voltage. System power can be provided from the adapter, battery, or a combination of both. The ISL9538C can operate with only a battery, only an adapter, or with both connected. For Intel IMVP8 compliant systems, the ISL9538C includes PSYS (system power monitor) functionality, which provides an analog signal representing total platform power. The PSYS output connects to a wide range of Renesas IMVP8 core regulators to provide an IMVP8 compliant power domain function. The ISL9538C supports buck, boost, or buck-boost operation to the input port from 2- to 4-cell batteries. The ISL9538C provides SMBus/I2C serial communication that allows programming of many critical parameters to deliver a customized solution.

ISL9538C - Typical Application Circuit
ISL9538C - Typical Application Circuit
  • Buck-boost NVDC charger for 2-, 3- or 4-cell Li-ion batteries
  • Input voltage range: 3.9V to 23.4V (no dead zone)
  • System output voltage: 2.4V to 18.304V
  • Autonomous charging option (automatic completion of charging)
  • Pass-Through mode in forward direction
  • 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 depleted battery
  • Ideal diode control in Turbo mode
  • Two-level adapter current limit available
  • 100% 2-FET buck only mode option
  • Battery Ship mode option
  • SMBus and auto-increment I2C compatible
  • 4mm x 4mm 32 Ld TQFN package

Applications

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

Documentation

Type Title Date
Datasheet - Short-form
ISL9538C Short-Form Datasheet
PDF 83 KB
Brochure
Industrial Power Management Brochure
PDF 5.51 MB 日本語
Datasheet
ISL9538C Datasheet
PDF 2.26 MB
Product Change Notice
PCN22036 - Shipping medium change from Tube to Tray for listed Renesas TDFN, TQFN, DFN and QFN packaged products
PDF 169 KB
Product Change Notice
PCN21057 - Alternate assembly facility of the listed Renesas QFN / TQFN packaged products
PDF 179 KB
Product Change Notice
PCN21043A - Trim change to Renesas product ISL9238C* and ISL9538C*
PDF 297 KB
Application Note
AN1681: Grounding Techniques
PDF 509 KB
Application Note
AN1684: Nonideality of Ground
PDF 397 KB
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Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

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    ISL9538CHRTZ
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