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Product Detailed Parameters
- Description：IC BATT CHG LI-ION 2-4CEL 32TQFN
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Battery Chemistry：Lithium Ion/Polymer
- Voltage - Supply (Max)：23.4V
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad
- Supplier Device Package：32-TQFN (4x4)
- Number of Cells：2 ~ 4
- Current - Charging：Constant - Programmable
- Programmable Features：Current
- Fault Protection：Over Current, Over Temperature
- Charge Current - Max：-
- Battery Pack Voltage：2.4V ~ 18.304V
- Interface：I2C, SMBus
- Grade：-
- Qualification：-
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Overview
The ISL9238CHRTZ-T7A is a digital configurable buck-boost battery charger IC designed for portable devices. It supports lithium-ion and lithium-polymer batteries with 2 to 4 cells in series. The device operates from an input voltage range of 3.2 V to 23.4 V and provides a regulated output voltage adjustable from 2.4 V to 18.304 V in 8 mV steps. Key electrical parameters include a charge current limit accuracy of ±2% and a charging voltage accuracy of -1.1% to +0.5%. It features programmable trickle charge currents ranging from 64 mA to 512 mA.
Feature Summary
- Integrates SMBus interface for digital configuration and system monitoring.
- Supports Narrow Voltage Direct Charge (NVDC) and hybrid power modes for efficient power path management.
- Includes comprehensive fault protection mechanisms against overcurrent, overtemperature, and overvoltage conditions.
Applications
- Tablets
- Ultrabooks
- Notebooks
- Power banks
- USB-C portable devices
Procurement Notes
Verify the complete part number including the suffix '-T7A' to ensure correct tape-and-reel packaging. Confirm that the specific variant matches the required thermal performance and pinout for the target PCB layout. Cross-reference the datasheet revision date to ensure compatibility with current design specifications and firmware tools.
Selection Notes
Select this component for applications requiring precise digital control over charging profiles via SMBus. It is suitable for designs needing flexible input voltage ranges up to 23.4 V. Ensure the system architecture supports the necessary I2C/SMBus communication lines for configuration and status reporting during operation.
Part Context
This component belongs to the ISL9238 series of battery chargers from Renesas Electronics. It is commonly evaluated using reference designs such as the RTK-251-SinkCharger-ISL9238C, which integrates USB Power Delivery controllers. The series is optimized for modern portable computing platforms requiring high efficiency and compact form factors.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing firmware and hardware layouts if considering alternative chargers from the same family or different manufacturers.
