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Renesas ISL9241IRTZ
- Part No.:
- ISL9241IRTZ
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
ISL9241IRTZ.pdf
- Description:
- IC BATT CHG LI-ION 2-4CEL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,038
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Product details
Overview
ISL9241IRTZ from Renesas Electronics is a digitally configurable buck-boost battery charger IC supporting NVDC and HPBB charging modes for 2–4-cell Li-ion batteries, with 3.9V–23.4V input range, 3.9V–18.304V system/battery output, SMBus/I²C interface, and USB-C Power Delivery (PD) Fast Role Swap and PPS support - used in Ultrabook and notebook power management.
For engineers reviewing the ISL9241IRTZ datasheet, ISL9241IRTZ pinout, ISL9241IRTZ application, or ISL9241IRTZ equivalent, key selection considerations include its all-NFET architecture, PSYS analog output for IMVP8/9 compliance, autonomous charging control, AMON/BMON current monitoring, and OTG reverse buck-boost capability from 2- to 4-cell batteries.
Technical Context
The ISL9241IRTZ implements dual-mode operation: Narrow Voltage Direct Charging (NVDC) for optimal battery charging efficiency and Hybrid Power Buck Boost (HPBB) for high-efficiency system power delivery with bypass capability. Its firmware-controlled mode switching enables dynamic adaptation to adapter/battery source availability.
It integrates an 8-bit ADC for real-time monitoring of voltage, current, and temperature; supports PROCHOT# signaling and PSYS analog output for IMVP8/9-compliant core regulators; and provides independent compensation networks for forward (charging) and reverse (OTG) operation to maintain stability across bidirectional power flow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.9V to 23.4V - supports wide-input DC sources including USB-C PD ports and travel adapters without dead-zone gaps. |
| Output Voltage Range | 3.9V to 18.304V - programmable system/battery rail voltage covering 2–4-cell Li-ion configurations. |
| Charging Topology | Buck-boost with NVDC & HPBB modes - enables simultaneous system power delivery and battery charging with adaptive path selection. |
| Interface | SMBus/I²C - allows full configuration of charging parameters, protection thresholds, and mode control via host microcontroller. |
| Protection Features | JEITA-compliant NTC monitoring, Ship Mode (ultra-low-power state), overvoltage/overcurrent/thermal protection - ensures safe battery handling per industry standards. |
| USB-C PD Support | Fast Role Swap and Programmable Power Supply (PPS) - enables bidirectional power negotiation and precise voltage/current control for USB-C ecosystems. |
| PSYS Output | Analog signal representing total platform power - directly interfaces with IMVP8/9 core regulators for dynamic voltage/frequency scaling. |
Pinout & Package
Package: 4×4 mm, 32-lead TQFN (Thin Quad Flat No-lead) with exposed thermal pad - optimized for high-density portable computing PCB layouts and thermal performance in thin form factors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply | Accepts 3.9V–23.4V DC input from adapter or USB-C PD port; feeds internal buck-boost power stage. |
| VSYS | System power rail | Regulated output supplying CPU/GPU/platform logic; dynamically sourced from adapter, battery, or both. |
| VBAT | Battery connection | Connects to 2–4-cell Li-ion pack; supports charging, discharging, and ship mode control. |
| SCL/SDA | SMBus/I²C interface | Two-wire digital bus for configuration, telemetry readback, and firmware updates. |
| PSYS | System power monitor | Analog output proportional to total platform power consumption; required for IMVP8/9 compliance. |
| PROCHOT# | Thermal throttling signal | Open-drain output asserted during thermal or power limit events; compatible with Intel thermal management protocols. |
| AMON/BMON | Current monitor outputs | Analog signals representing adapter and battery current magnitudes for system-level power budgeting. |
| BYPSG | Bypass gate control | Enables direct adapter-to-system connection in bypass mode, minimizing conversion loss. |
Key Features
| Feature | Design Value |
|---|---|
| All-NFET buck-boost architecture | Eliminates need for PFETs or external Schottky diodes, reducing BOM cost and improving efficiency in both charge and discharge directions. |
| Firmware-configurable NVDC/HPBB modes | Enables runtime optimization between battery charging priority (NVDC) and system efficiency (HPBB), adapting to real-time power source conditions. |
| Independent forward/reverse compensation | Ensures stable loop response during bidirectional operation - critical for reliable USB-C PD OTG and Fast Role Swap transitions. |
| Integrated 8-bit ADC | Monitors VIN, VBAT, VSYS, AMON, BMON, and NTC inputs without external components, simplifying system sensing architecture. |
| JEITA-compliant thermal charging control | Uses external NTC thermistor to enforce temperature-based charge current/voltage limits per JEITA standard for Li-ion safety. |
Applications
| Ultrabook Power Management | Notebook Battery Charging |
|---|---|
Use Scenario: High-efficiency dual-source power delivery in sub-15mm clamshell designs with USB-C PD input and 3-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary system power regulator and battery charger managing adapter-battery arbitration, PSYS feedback, and PROCHOT# signaling. Use Value: Enables IMVP8/9 compliance, eliminates discrete power-path MOSFETs, and reduces thermal footprint via HPBB bypass mode. | Use Scenario: Adaptive charging for 4-cell Li-ion battery packs in 15.6" notebooks with variable AC adapter and USB-C PD inputs. IC Role / Device Role / Timing Role: Configurable buck-boost charger supporting NVDC for fast charging and HPBB for low-noise system rail regulation. Use Value: Delivers >90% peak efficiency across 5W–65W load range and supports JEITA thermal profiles for extended battery life. |
| USB-C Power Bank | Tablet System Power |
Use Scenario: Bidirectional USB-C PD power bank supporting PPS output and Fast Role Swap for laptop charging. IC Role / Device Role / Timing Role: OTG-capable buck-boost controller providing regulated 5–20V output from 2–4-cell battery with precise PPS voltage stepping. Use Value: Meets USB-IF PPS specification with ±10mV voltage accuracy and supports role swap within 100ms. | Use Scenario: Thin-profile tablet requiring compact, thermally efficient power management with single-chip adapter/battery arbitration. IC Role / Device Role / Timing Role: Integrated system power manager delivering VSYS from either USB-C PD port or 2-cell battery with autonomous ship mode entry. Use Value: Reduces solution size by 35% vs. discrete buck + boost + linear regulator approach and enables <1μA ship mode quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| bq25792RTWR | TI part uses integrated FETs with lower max input (20V) and no PSYS analog output; supports USB-C PD but lacks IMVP compliance. | Targeted at general portable devices without IMVP platform requirements; no PROCHOT# or PSYS interface. | Select when IMVP8/9 integration is unnecessary and cost-sensitive design favors TI ecosystem tooling. |
| MP2731GQZ-0000-P | MPS part offers 30V input, but only supports NVDC (no HPBB/bypass mode); lacks PSYS and PROCHOT# outputs. | Best suited for battery-first applications where system power must always be derived from battery, not adapter bypass. | Choose when bypass functionality and IMVP platform signaling are not required, and higher input voltage margin is critical. |
Compared with bq25792RTWR and MP2731GQZ-0000-P, the ISL9241IRTZ uniquely combines IMVP8/9 PSYS/PROCHOT# compliance, firmware-switchable NVDC/HPBB modes, and USB-C PD PPS support - making it the only option for Intel-compliant Ultrabook platforms requiring dynamic power-path arbitration and bidirectional USB-C PD.
Availability
ISL9241IRTZ is available at Aetrix Electronics and suitable for Ultrabook power management, notebook battery charging, and USB-C PD power bank designs requiring stable component supply, long-term lifecycle support, and IMVP-compliant system integration.
Supply support for ISL9241IRTZ 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 is a global semiconductor leader specializing in microcontrollers, analog, power management, and timing solutions for automotive, industrial, and computing markets.
The ISL9241IRTZ belongs to Renesas' advanced battery charger IC product line, designed specifically for high-efficiency, multi-source power management in Intel IMVP-compliant portable computing platforms.
FAQ
What charging topologies does the ISL9241IRTZ support?
The ISL9241IRTZ supports both Narrow Voltage Direct Charging (NVDC) and Hybrid Power Buck Boost (HPBB) topologies, with firmware-controlled mode switching. It also enables bypass mode for direct adapter-to-system power delivery. These modes allow dynamic optimization between battery charging speed and system efficiency depending on input source and load conditions. The ISL9241IRTZ implements all-NFET architecture for both forward and reverse operation, eliminating external diodes or PFETs.
Does the ISL9241IRTZ support USB-C Power Delivery features?
Yes, the ISL9241IRTZ supports USB-C Power Delivery Fast Role Swap and Programmable Power Supply (PPS) functionality. It enables bidirectional power flow - charging the battery from a USB-C PD source or delivering regulated PPS output from the battery during OTG operation. The ISL9241IRTZ meets USB-IF PPS voltage accuracy requirements and uses independent compensation networks to ensure stability during role transitions. This makes the ISL9241IRTZ suitable for USB-C PD power banks and dual-role portable systems.
How does the ISL9241IRTZ integrate with Intel IMVP platforms?
The ISL9241IRTZ integrates directly with Intel IMVP8/9 platforms via its PSYS analog output and PROCHOT# open-drain signal. The PSYS pin delivers a voltage proportional to total platform power consumption, enabling dynamic voltage and frequency scaling in core regulators. PROCHOT# asserts during thermal or power-limit events to throttle CPU activity. Both signals are electrically and functionally compliant with IMVP specifications, allowing the ISL9241IRTZ to serve as the primary system power manager in certified Ultrabook and notebook designs.
What package type and thermal characteristics does the ISL9241IRTZ use?
The ISL9241IRTZ uses a 4×4 mm, 32-lead TQFN package with an exposed thermal pad. This package supports high power density and efficient heat dissipation in space-constrained portable applications. Its thermal resistance (θJA) is specified at 35°C/W under standard JEDEC 2-layer board conditions. The IC includes internal thermal shutdown and supports JEITA-compliant charging via external NTC thermistor, ensuring safe operation across ambient temperatures from –20°C to +70°C.
Can the ISL9241IRTZ operate with only a battery or only an adapter connected?
Yes, the ISL9241IRTZ operates in three distinct power-source configurations: adapter-only, battery-only, or both simultaneously. In adapter-only mode, it regulates VSYS and charges the battery. In battery-only mode, it delivers regulated system power and supports OTG reverse operation. When both sources are present, it intelligently arbitrates between them using NVDC or HPBB logic. This flexibility is enabled by internal reconfigurable registers and firmware-controlled state machines, making the ISL9241IRTZ ideal for portable devices with variable power availability.
ISL9241IRTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 2 ~ 4
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer
- Fault Protection:
- Over Current, Over Temperature, Over Voltage
- Charge Current - Max:
- -
- Battery Pack Voltage:
- 3.9 V ~ 18.304 V
- Voltage - Supply (Max):
- 23.4V
- Interface:
- I2C, SMBus
- Operating Temperature:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (4x4)
ISL9241IRTZ FAQ
1.How can I place an order for ISL9241IRTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9241IRTZ 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 ISL9241IRTZ reliable?
The price and inventory of ISL9241IRTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9241IRTZ is usually 5 days.
3.What payment methods are accepted for ISL9241IRTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9241IRTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9241IRTZ?
ISL9241IRTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9241IRTZ 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 ISL9241IRTZ?
For technical support, including ISL9241IRTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9241IRTZ requirements.
6.How does Aetrix verify that ISL9241IRTZ is sourced from the original manufacturer or authorized distributors?
All ISL9241IRTZ 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 ISL9241IRTZ meets industry standards.
7.What is the process for return or replacement of ISL9241IRTZ?
All ISL9241IRTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL9241IRTZ, 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 ISL9241IRTZ part is unused and in its original packaging.
Return procedure for ISL9241IRTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL9241IRTZ Tags
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