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Renesas ISL9241HRTZ
- Part No.:
- ISL9241HRTZ
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
ISL9241HRTZ.pdf
- Description:
- IC BATT CHG LI-ION 2-4CEL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,295
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Product details
Overview
ISL9241HRTZ 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 ISL9241HRTZ datasheet, ISL9241HRTZ pinout, ISL9241HRTZ application, or ISL9241HRTZ 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 ISL9241HRTZ implements dual-mode operation: firmware-controlled transition between Narrow Voltage Direct Charging (NVDC) and Hybrid Power Buck Boost (HPBB), including bypass mode that directly connects adapter to system rail. It uses R3™ technology for high light-load efficiency and supports reverse buck/boost/buck-boost (OTG) to the adapter port.
It integrates an 8-bit ADC for real-time monitoring of voltage, current, and temperature; provides PROCHOT# open-drain output and PSYS analog signal compliant with IMVP8/9 specifications; and enables JEITA-compliant thermal regulation via external NTC.
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 |
| Output Voltage Range | 3.9V to 18.304V - programmable system/battery rail voltage for 2–4-cell Li-ion configurations |
| Charging Topology | Buck-boost with NVDC & HPBB modes - enables dynamic power path selection between adapter, battery, and system load |
| Interface Protocol | SMBus/I²C - allows full configuration of charging parameters, protection thresholds, and mode switching via host controller |
| USB-C PD Features | Fast Role Swap & Programmable Power Supply (PPS) support - enables bidirectional power negotiation and precise voltage/current control in OTG mode |
| Protection Functions | JEITA thermal regulation (NTC-based), Ship mode (ultra-low-power state), overvoltage/overcurrent/fault monitoring - ensures safe battery handling and long-term reliability |
| IMVP Compliance | PSYS analog output + PROCHOT# - delivers platform-level power telemetry and thermal throttling signals compatible with Intel IMVP8/9 core regulators |
Pinout & Package
ISL9241HRTZ is housed in a 4×4 mm, 32-lead TQFN package with wettable flanks, optimized for high-density portable power designs and thermal performance in thin-profile notebooks and tablets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply | Accepts 3.9V–23.4V DC input from adapter or USB-C PD source |
| VSYS | System power rail | Regulated output supplying CPU/GPU/platform loads; supports NVDC/HPBB path control |
| VBAT | Battery connection | Connects to 2–4-cell Li-ion pack; supports charging, discharging, and fuel-gauge interface |
| SCL/SDA | SMBus/I²C interface | Two-wire serial bus for register read/write, fault reporting, and dynamic parameter update |
| PSYS | System power monitor | Analog output proportional to total platform power consumption - feeds IMVP8/9 core regulator feedback |
| PROCHOT# | Thermal throttle signal | Open-drain output asserted during thermal overload to trigger CPU throttling per IMVP spec |
| AMON/BMON | Current sense outputs | Analog monitors for adapter and battery current - enables real-time power budgeting and charge termination |
| BYPSG | Bypass gate control | Enables direct adapter-to-system connection in bypass mode, minimizing conduction loss |
Key Features
| Feature | Design Value |
|---|---|
| All-NFET buck-boost topology | Eliminates need for PFETs or diodes - reduces BOM cost and improves efficiency across load range |
| Firmware-reconfigurable registers | Allows dynamic optimization of compensation networks and operating modes without hardware change |
| Independent forward/reverse compensation | Separate tuning for charging (forward) and OTG (reverse) paths - ensures stability under bidirectional operation |
| Autonomous charging control | On-chip logic manages CC/CV termination, top-off, and safety timers - reduces host MCU firmware burden |
| Supplemental power support (VMIN) | Enables Intel VMIN active protection - maintains minimum system voltage during adapter transients or brownouts |
Applications
| Ultrabook Power Management | Notebook Battery Charging |
|---|---|
Use Scenario: High-efficiency dual-input (adapter + battery) power delivery in sub-15mm clamshell designs with USB-C PD support. IC Role / Device Role / Timing Role: Primary system power manager and battery charger controlling NVDC/HPBB mode transitions and PSYS telemetry. Use Value: Enables seamless adapter-to-battery switchover, extends runtime via optimized light-load R3™ efficiency, and satisfies IMVP8/9 platform requirements. | Use Scenario: Smart charging of 3-cell Li-ion packs in 14-inch notebooks with thermal-aware JEITA compliance. IC Role / Device Role / Timing Role: Configurable buck-boost charger with integrated NTC interface and autonomous end-of-charge logic. Use Value: Reduces host software overhead, supports ship mode for shelf-life preservation, and delivers ±0.5% voltage accuracy over temperature. |
| 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 enabling reverse power delivery from 4-cell battery to USB-C port. Use Value: Achieves <15mV PPS voltage step resolution and <50mA current step resolution per USB-C specification. | Use Scenario: Thin, fanless tablet requiring compact, thermally efficient power architecture with minimal external components. IC Role / Device Role / Timing Role: Single-chip solution integrating battery charging, system regulation, and IMVP-compatible PSYS/PROCHOT# signaling. Use Value: Eliminates discrete power-path MOSFETs and external ADCs - saves >3mm² PCB area and reduces bill-of-materials count by 7+ components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| bq25792RTWR | Supports 1–4-cell charging but lacks PSYS analog output and IMVP compliance; uses I²C only (no SMBus alert response) | Targeted at generic USB-C PD power banks, not Intel platform integration | Choose for cost-sensitive, non-IMVP designs where PSYS telemetry is unnecessary |
| MP2731GQZ | Offers similar NVDC/HPBB modes but no Fast Role Swap or PPS support; uses proprietary register map instead of SMBus standard commands | Used in ARM-based tablets and Chromebooks without Intel IMVP dependencies | Prefer when USB-C PD reverse functionality is not required and SMBus interoperability is not mandated |
Compared with bq25792RTWR and MP2731GQZ, the ISL9241HRTZ uniquely combines IMVP8/9 PSYS/PROCHOT# compliance, SMBus-standardized configuration, and full USB-C PD 3.0 Fast Role Swap + PPS - making it the only option for Intel-based Ultrabooks requiring certified platform power telemetry and bidirectional PD negotiation.
Availability
ISL9241HRTZ 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 lifecycle support, and IMVP-compliant telemetry.
Supply support for ISL9241HRTZ 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 connectivity solutions for automotive, industrial, and computing markets.
The ISL9241HRTZ belongs to Renesas' high-efficiency battery charger product line, designed specifically for Intel IMVP-compliant mobile platforms requiring integrated NVDC/HPBB charging, USB-C PD 3.0 support, and real-time system power telemetry.
FAQ
What charging topologies does the ISL9241HRTZ support?
The ISL9241HRTZ supports three distinct charging topologies: Narrow Voltage Direct Charging (NVDC), Hybrid Power Buck Boost (HPBB), and bypass mode - all firmware-configurable via SMBus. It also enables reverse buck, boost, or buck-boost operation (OTG mode) from 2- to 4-cell batteries to the adapter port. This flexibility allows the ISL9241HRTZ to adapt dynamically to varying input sources and system load conditions while maintaining optimal efficiency across the entire operating range.
Does the ISL9241HRTZ provide IMVP-compliant system power monitoring?
Yes, the ISL9241HRTZ includes a dedicated PSYS analog output that delivers a voltage signal proportional to total platform power consumption, fully compliant with Intel IMVP8 and IMVP9 specifications. It also provides a PROCHOT# open-drain output for thermal throttling coordination. These features enable direct interfacing with Intel core voltage regulators and are essential for certified Ultrabook and notebook platform designs using the ISL9241HRTZ.
How does the ISL9241HRTZ handle USB-C Power Delivery Fast Role Swap?
The ISL9241HRTZ natively supports USB-C PD 3.0 Fast Role Swap (FRS) and Programmable Power Supply (PPS) protocols through its integrated SMBus interface and bidirectional power path control. During FRS, the ISL9241HRTZ rapidly reconfigures its internal NFETs to switch between sink and source roles while maintaining stable VSYS regulation. This capability is implemented in hardware and firmware, allowing the ISL9241HRTZ to meet strict USB-C timing requirements without host intervention.
What package type and thermal characteristics does the ISL9241HRTZ use?
The ISL9241HRTZ is packaged in a 4×4 mm, 32-lead TQFN with wettable flanks, designed for high thermal conductivity and compatibility with automated optical inspection. Its RθJA is 38°C/W (on 4-layer board with 2 oz copper and 1-in² thermal pad), enabling operation up to 85°C ambient in typical notebook layouts. The package supports reflow soldering per J-STD-020 and is RoHS-compliant, making the ISL9241HRTZ suitable for high-volume, thermally constrained portable applications.
Can the ISL9241HRTZ operate without a host microcontroller?
Yes, the ISL9241HRTZ supports autonomous charging operation with built-in CC/CV control, top-off, and safety timers - enabling basic charging functionality without continuous host supervision. However, advanced features like NVDC/HPBB mode switching, PSYS calibration, JEITA profile selection, and USB-C PD negotiation require SMBus communication with a host controller. The ISL9241HRTZ retains full protection and ship mode functionality even in standalone mode.
ISL9241HRTZ 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:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (4x4)
ISL9241HRTZ FAQ
1.How can I place an order for ISL9241HRTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9241HRTZ 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 ISL9241HRTZ reliable?
The price and inventory of ISL9241HRTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9241HRTZ is usually 5 days.
3.What payment methods are accepted for ISL9241HRTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9241HRTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9241HRTZ?
ISL9241HRTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9241HRTZ 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 ISL9241HRTZ?
For technical support, including ISL9241HRTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9241HRTZ requirements.
6.How does Aetrix verify that ISL9241HRTZ is sourced from the original manufacturer or authorized distributors?
All ISL9241HRTZ 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 ISL9241HRTZ meets industry standards.
7.What is the process for return or replacement of ISL9241HRTZ?
All ISL9241HRTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL9241HRTZ, 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 ISL9241HRTZ part is unused and in its original packaging.
Return procedure for ISL9241HRTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL9241HRTZ Tags
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