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Renesas ISL9238HRTZ-TR5542
- Part No.:
- ISL9238HRTZ-TR5542
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
ISL9238HRTZ-TR5542.pdf
- Description:
- NOTEBOOK BATTERY CHARGER 4X4 TQF
- Quantity:
- Payment:
- Shipping:
Inventory:1,269
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Product details
Overview
ISL9238HRTZ-TR5542 from Renesas Electronics is a buck-boost Narrow VDC (NVDC) battery charger IC for 1–4-cell Li-ion systems, supporting input voltage range 3.2V–23.4V, system output regulation 2.4V–18.304V, and up to 1MHz switching frequency. It delivers autonomous charging, PSYS power monitoring for IMVP8 platforms, and reverse buck/boost/buck-boost operation from battery.
For engineers reviewing the ISL9238HRTZ-TR5542 datasheet, ISL9238HRTZ-TR5542 pinout, ISL9238HRTZ-TR5542 application, or ISL9238HRTZ-TR5542 equivalent, key selection considerations include NVDC topology support, SMBus/I²C programmability, PSYS analog output compliance with IMVP8, and dual current monitoring (AMON/BMON) for adapter and battery paths.
Technical Context
The ISL9238HRTZ-TR5542 implements Renesas R3™ Technology for high light-load efficiency and fast transient response in NVDC architectures. It operates across three power sources-adapter-only, battery-only, or hybrid-and supports autonomous charge termination with trickle charging for depleted batteries.
Its integrated PSYS output provides an analog signal proportional to total platform power, directly compatible with IMVP8 core regulators. The device also features PROCHOT# open-drain output and ideal diode control in Turbo mode for thermal management and system-level power coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Buck-boost NVDC charger supporting seamless transition between adapter and battery power sources |
| Input Voltage Range | 3.2V to 23.4V - enables compatibility with USB PD ports, AC/DC adapters, and travel adapters without dead zones |
| System Output Range | 2.4V to 18.304V - provides stable bus voltage for 1–4-cell Li-ion portable platforms |
| Switching Frequency | Up to 1MHz - allows use of smaller external inductors and capacitors for compact PCB layout |
| Communication Interface | SMBus and auto-increment I²C - enables real-time programming of charge parameters and status reporting |
| Current Monitoring | Separate AMON (adapter) and BMON (battery) outputs - supports independent power path diagnostics and telemetry |
| PSYS Output | Analog signal representing total platform power - directly interfaces with IMVP8-compliant core regulators |
Pinout & Package
ISL9238HRTZ-TR5542 is housed in a 4×4 mm, 32-lead TQFN package with exposed thermal pad (Renesas package code HRTZ). Pin functions are validated per Figure 1 and Table 1 of FN8877 Rev.9.00.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DCIN | Primary input supply | Accepts wide-range DC input (3.2V–23.4V); feeds buck-boost power stage |
| VBAT | Battery connection | Connects to 1–4-series Li-ion battery pack; supports reverse operation modes |
| VSYS | System output rail | Regulated narrow-range output (2.4V–18.304V); powers SoC, memory, peripherals |
| PSYS | Platform power monitor | Analog output proportional to total system power; required for IMVP8 compliance |
| PROCHOT# | Thermal alert signal | Open-drain output asserted during thermal throttling; compatible with Intel IMVP8 platforms |
| SCL/SDA | SMBus/I²C interface | Two-wire serial interface for configuration, telemetry, and fault reporting |
| AMON/BMON | Current sense monitors | Separate analog outputs for adapter and battery current measurement |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous charging | Enables automatic end-of-charge detection and trickle charging for deeply depleted batteries without host intervention |
| NVDC system regulation | Maintains stable VSYS voltage regardless of input source or battery state, eliminating brownouts during source transitions |
| Ideal diode control in Turbo mode | Reduces conduction loss and improves efficiency during high-current battery discharge scenarios |
| Two-level adapter current limit | Allows dynamic current limiting based on thermal or system load conditions to prevent adapter overload |
| Battery Ship mode | Ultra-low quiescent current state (<1μA) to minimize battery self-discharge during long-term storage |
Applications
| Tablet Power Management | Ultrabook Battery Charging |
|---|---|
Use Scenario: High-efficiency charging and system power delivery in thin-and-light tablets with USB-C PD input and 2–3 cell Li-ion packs. IC Role / Device Role / Timing Role: Primary NVDC charger and system bus regulator managing power arbitration between USB-C PD port and battery. Use Value: Eliminates need for separate system PMIC by integrating PSYS monitoring, PROCHOT#, and dual current sensing in one IC. | Use Scenario: Dual-source (adapter + battery) power management in IMVP8-compliant Ultrabooks with dynamic power budgeting. IC Role / Device Role / Timing Role: IMVP8-compliant platform power monitor and adaptive charger enabling coordinated thermal/power throttling. Use Value: PSYS analog output directly interfaces with core VRMs, reducing BOM count and simplifying IMVP8 implementation. |
| USB-C Power Bank | Notebook Docking Station |
Use Scenario: Bi-directional power handling in portable power banks supporting USB-C PD input and output. IC Role / Device Role / Timing Role: Reverse buck/boost/buck-boost controller enabling regulated output from 3–4 cell battery to USB-C sink. Use Value: Supports OTG functionality via OTGEN/CMIN pins and maintains tight output regulation under variable load and SOC. | Use Scenario: Centralized power management in multi-port docking stations supplying power to notebook and peripherals. IC Role / Device Role / Timing Role: System bus regulator and adapter current limiter coordinating power distribution across multiple downstream rails. Use Value: Two-level adapter current limit prevents overloading upstream PD sources while maintaining stable VSYS for connected devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost NVDC charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25790RTWR | Supports USB PD 3.0 programmable power supply (PPS); lacks PSYS analog output; uses different SMBus register map | Targeted at USB-C PD 3.0 host devices requiring PPS negotiation; not IMVP8-compliant | Select when USB PD 3.0 PPS support is required over IMVP8 platform integration |
| MP2731GQZ | Integrated ADC for battery voltage/temperature; no PSYS or PROCHOT#; lower max switching frequency (750kHz) | Optimized for cost-sensitive portable devices without IMVP8 or thermal throttling requirements | Select when PSYS/PROCHOT# are unnecessary and higher integration of battery telemetry is preferred |
Compared with BQ25790RTWR and MP2731GQZ, the ISL9238HRTZ-TR5542 uniquely combines IMVP8-compliant PSYS/PROCHOT# signaling, autonomous NVDC regulation, and reverse power delivery in a single 4×4mm TQFN package-making it optimal for Intel-based Ultrabooks and tablets requiring strict platform power coordination.
Availability
ISL9238HRTZ-TR5542 is available at Aetrix Electronics and suitable for tablet, Ultrabook, and USB-C power bank designs requiring stable component supply, IMVP8 compliance, and bi-directional power management.
Supply support for ISL9238HRTZ-TR5542 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor manufacturer headquartered in Tokyo, Japan, specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and computing markets.
The ISL9238HRTZ-TR5542 belongs to Renesas' battery management IC product line, designed specifically for high-efficiency, multi-source NVDC charging and IMVP8-compliant platform power monitoring in premium portable computing devices.
FAQ
What is the function of the PSYS pin on the ISL9238HRTZ-TR5542?
The PSYS pin on the ISL9238HRTZ-TR5542 provides an analog voltage output proportional to total platform power consumption. This signal is directly compatible with IMVP8-compliant core voltage regulators and enables real-time power budgeting and thermal coordination. The ISL9238HRTZ-TR5542 generates PSYS using internal current and voltage sensing, eliminating need for external power monitors in Intel-based designs.
Does the ISL9238HRTZ-TR5542 support USB On-The-Go (OTG) functionality?
Yes, the ISL9238HRTZ-TR5542 supports USB OTG through dedicated pins OTGEN/CMIN and OTGPG/CMOUT, enabling reverse buck, boost, or buck-boost operation from battery to USB-C port. This allows the ISL9238HRTZ-TR5542 to regulate output voltage tightly during OTG mode, supporting power delivery to peripherals even as battery state-of-charge declines.
What package type and thermal characteristics does the ISL9238HRTZ-TR5542 use?
The ISL9238HRTZ-TR5542 uses a 4×4 mm, 32-lead TQFN package (Renesas code HRTZ) with exposed thermal pad for enhanced heat dissipation. Its RθJA is 35°C/W under standard JEDEC 2-layer board conditions. The ISL9238HRTZ-TR5542 integrates thermal foldback and PROCHOT# assertion to protect against overheating during sustained high-power operation.
How does the ISL9238HRTZ-TR5542 handle battery charging termination?
The ISL9238HRTZ-TR5542 supports autonomous charging termination using configurable thresholds for charge current taper, battery voltage, and temperature. It also enables trickle charging for batteries below 2.5V, allowing safe recovery of deeply depleted cells. The ISL9238HRTZ-TR5542 implements these functions internally without requiring host processor supervision.
Can the ISL9238HRTZ-TR5542 operate with only a battery connected and no adapter?
Yes, the ISL9238HRTZ-TR5542 supports battery-only operation, delivering regulated VSYS from 1–4-cell Li-ion packs via reverse buck, boost, or buck-boost conversion. In this mode, the ISL9238HRTZ-TR5542 maintains system rail stability while providing AMON/BMON telemetry and PSYS monitoring-enabling full platform functionality during adapter disconnection.
ISL9238HRTZ-TR5542 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 4
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- Over Current, Over Temperature
- Charge Current - Max:
- -
- Battery Pack Voltage:
- 2.4V ~ 18.304V
- Voltage - Supply (Max):
- 23.4V
- Interface:
- -
- Operating Temperature:
- -10°C ~ 100°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (4x4)
ISL9238HRTZ-TR5542 FAQ
1.How can I place an order for ISL9238HRTZ-TR5542 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9238HRTZ-TR5542 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL9238HRTZ-TR5542 reliable?
The price and inventory of ISL9238HRTZ-TR5542 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9238HRTZ-TR5542 is usually 5 days.
3.What payment methods are accepted for ISL9238HRTZ-TR5542?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9238HRTZ-TR5542 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9238HRTZ-TR5542?
ISL9238HRTZ-TR5542 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9238HRTZ-TR5542 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL9238HRTZ-TR5542?
For technical support, including ISL9238HRTZ-TR5542 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9238HRTZ-TR5542 requirements.
6.How does Aetrix verify that ISL9238HRTZ-TR5542 is sourced from the original manufacturer or authorized distributors?
All ISL9238HRTZ-TR5542 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL9238HRTZ-TR5542 meets industry standards.
7.What is the process for return or replacement of ISL9238HRTZ-TR5542?
All ISL9238HRTZ-TR5542 units undergo pre-shipment inspection (PSI). If there is an issue with ISL9238HRTZ-TR5542, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL9238HRTZ-TR5542 part is unused and in its original packaging.
Return procedure for ISL9238HRTZ-TR5542:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL9238HRTZ-TR5542 Tags
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