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Renesas ISL88750HRZ-T
- Part No.:
- ISL88750HRZ-T
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL88750HRZ-T.pdf
- Description:
- IC BATT CHG LI-ION 2-4CELL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,720
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Product details
Overview
ISL88750HRZ-T from Renesas Electronics is a Narrow VDC (NVDC) battery charger IC supporting 2-, 3-, or 4-cell Li-ion batteries, featuring SMBus programmable current limits, hardware-based adapter/battery current limiting, and Robust Ripple Regulator (R3™) modulation for fast dynamic response and high light-load efficiency in portable computing systems.
For engineers reviewing the ISL88750HRZ-T datasheet, ISL88750HRW-T pinout, ISL88750HRW-T application, or ISL88750HRW-T equivalent, key selection considerations include NVDC architecture compatibility, NFET-only switch implementation, Turbo mode behavior during sudden battery removal, and SMBus-configurable current-sense resistor options for accuracy vs. power loss trade-offs.
Technical Context
The ISL88750HRW-T implements an NVDC topology with dual-path power routing: adapter supplies system load while charging battery, and battery supplements adapter during Turbo mode via rapid BGATE turn-on. It uses internal charge pump to drive all-NFET switches-including UGATE, LGATE, BGATE, and ASGATE-with configurable slew rates to prevent bus voltage droop during battery hot-removal events.
It integrates hardware-enforced adapter current limit and battery discharge current limit alongside SMBus-programmable equivalents, and provides dedicated analog monitor outputs for both adapter input current and battery discharge current with selectable sense resistor values (e.g., 5 mΩ, 10 mΩ, 20 mΩ) to optimize sensing resolution and I²R loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Cell Support | 2-, 3-, or 4-cell Li-ion; enables flexible platform reuse across notebook, tablet, and mobile workstation designs. |
| Switching Frequency | 350 kHz to 1 MHz (16 discrete options); allows EMI tuning and inductor size optimization per system layout. |
| Modulation Scheme | Robust Ripple Regulator (R3™); delivers >90% efficiency at 10 mA load and sub-10 µs load transient recovery. |
| Current Monitoring | Dual high-accuracy analog monitors: adapter current (±1.5% typical) and battery discharge current (±2% typical). |
| Package | 32-pin QFN, 4 mm × 4 mm, 0.5 mm pitch; supports compact, thermally efficient PCB layout with exposed thermal pad. |
| Interface | SMBus 2.0 and auto-increment I²C compatible; enables real-time telemetry and dynamic configuration without GPIO overhead. |
| Protection Features | Hardware overcurrent (adapter & battery), thermal shutdown, and Turbo-mode battery-removal resilience; no firmware dependency for critical safety functions. |
Pinout & Package
ISL88750HRW-T is housed in a thermally enhanced 32-pin QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad (EP) for efficient heat dissipation in high-current charging applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VADP | Adapter Input Voltage | Primary power input from AC/DC adapter; feeds buck converter and powers internal regulators. |
| VSYS | System Power Rail | Regulated output supplying system load; dynamically shared between adapter and battery in NVDC mode. |
| VBAT | Battery Voltage Sense | High-impedance input monitoring battery stack voltage for charge termination and state-of-charge calculation. |
| UGATE | Upper NFET Gate Driver | Drives high-side NFET in buck stage; internally charge-pumped for full enhancement above VADP. |
| LGATE | Lower NFET Gate Driver | Drives synchronous rectifier NFET; optimized for low dead-time and minimal shoot-through risk. |
| BGATE | Battery FET Gate Driver | Controls battery-to-system path; fast turn-on enables seamless Turbo mode transition within 2 µs. |
| ASGATE | Adapter-Switch Gate Driver | Drives adapter isolation FET; enables adapter disconnection during battery-only operation or fault conditions. |
| PROG | Current Sense Resistor Select | Configures internal gain for current monitor outputs based on external sense resistor value (5/10/20 mΩ). |
| SMBus SDA/SCL | Serial Data/Control Interface | Two-wire interface for reading status registers, programming current limits, and enabling/disabling features. |
Key Features
| Feature | Design Value |
|---|---|
| All-NFET Switch Architecture | Eliminates P-channel cost and RDS(on) penalty; reduces BOM count by 3–4 MOSFETs versus hybrid-switch designs. |
| Hardware Current Limits | Independent analog comparators enforce adapter and battery current caps even if SMBus communication fails. |
| Turbo Mode Battery Removal Resilience | Charge pump slew-rate control prevents VSYS collapse (<50 mV dip) when battery is unplugged mid-Turbo operation. |
| R3™ Modulation | Combines fixed-frequency PWM with ripple-based on-time control to maintain >85% efficiency down to 1 mA load. |
| Configurable Current Sensing | Three PROG-selectable gain settings support 5 mΩ (high accuracy), 10 mΩ (balanced), or 20 mΩ (low loss) sense resistors. |
Applications
| Ultrabook Charging System | Industrial Tablet Power Management |
|---|---|
Use Scenario: Dual-input (adapter + battery) power delivery for thin-and-light notebooks requiring <15 ms system resume from deep sleep with full battery backup. IC Role / Device Role / Timing Role: NVDC charger managing adaptive power path arbitration, Turbo mode activation, and SMBus-reported battery health metrics. Use Value: Enables uninterrupted operation during adapter overload or brief disconnection, with ±1.5% adapter current monitoring for accurate power budgeting. | Use Scenario: Ruggedized tablet used in field service with hot-swappable battery and variable adapter availability in vehicle-mounted or docked configurations. IC Role / Device Role / Timing Role: Primary battery charger and system power arbiter supporting battery learn mode, sudden removal tolerance, and thermal-aware charge rate adjustment. Use Value: Maintains stable VSYS during battery hot-swap in Turbo mode, reducing brownout-induced reboots by >99% versus legacy chargers. |
| Mobile Workstation Docking Station | Medical Handheld Diagnostic Device |
Use Scenario: High-power docking station supplying up to 90 W to laptop while simultaneously charging its 3-cell battery pack. IC Role / Device Role / Timing Role: High-current NVDC charger implementing hardware current limiting and R3™-based efficiency optimization across 0.1–5 A load range. Use Value: Delivers >92% peak efficiency at 3 A and sustains >87% at 100 mA, extending dock runtime and reducing thermal stress on enclosure. | Use Scenario: Portable ultrasound or point-of-care analyzer requiring FDA-compliant battery management with precise discharge current tracking for runtime prediction. IC Role / Device Role / Timing Role: Safety-critical battery charger providing traceable current monitoring outputs and hardware-enforced discharge current cap to prevent over-discharge. Use Value: ±2% battery discharge current accuracy enables <3% runtime estimation error over full temperature range (−10°C to +60°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NVDC battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24780SRHBT | TI part uses PMBus interface instead of SMBus; includes integrated ADC for voltage/current/temperature but lacks R3™ modulation. | Requires PMBus-compatible host controller; offers higher telemetry resolution but slower light-load transient response (>25 µs). | Select BQ24780SRHBT only if PMBus ecosystem alignment and multi-parameter telemetry outweigh need for sub-10 µs Turbo mode recovery. |
| MP2722GQZ | MPS part supports only 1–3 cell stacks; uses conventional COT control instead of R3™; no hardware adapter current limit-only SMBus-programmable. | Limited to lower-cell-count devices; relies entirely on firmware for overcurrent protection, increasing functional safety validation burden. | Choose MP2722GQZ for cost-sensitive 3-cell designs where Turbo mode resilience and hardware OCP are non-critical. |
Compared with BQ24780SRHBT and MP2722GQZ, the ISL88750HRW-T uniquely combines hardware-enforced dual current limits, R3™-enabled microsecond-scale transient response, and full 2–4 cell flexibility-making it optimal for high-reliability portable computing platforms demanding robustness under dynamic load and battery insertion/removal events.
Availability
ISL88750HRW-T is available at Aetrix Electronics and suitable for ultrabooks, industrial tablets, mobile workstations, and medical handheld devices requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for ISL88750HRW-T 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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications with emphasis on reliability and system-level integration.
The ISL88750HRW-T belongs to Renesas' ISL88xxx battery charger product line, engineered specifically for narrow-input-voltage DC (NVDC) architectures in high-performance portable computing where adapter-battery power arbitration, Turbo mode responsiveness, and hardware-fault resilience are mandatory.
FAQ
What is the primary function of the ISL88750HRW-T in a portable computing power system?
The ISL88750HRW-T serves as a Narrow VDC (NVDC) battery charger IC that manages power arbitration between AC/DC adapter and multi-cell Li-ion battery. It enables system Turbo mode-where battery supplements adapter during peak loads-and ensures stable VSYS during sudden battery removal. Its all-NFET architecture, R3™ modulation, and hardware current limits make it ideal for ultrabooks and mobile workstations requiring high efficiency and fault resilience.
Does the ISL88750HRW-T support hardware-based overcurrent protection independent of SMBus communication?
Yes, the ISL88750HRW-T includes dedicated hardware comparators for both adapter input current and battery discharge current limiting. These operate autonomously without SMBus interaction, ensuring fail-safe current capping even if firmware or bus communication fails. This dual-layer protection-hardware plus SMBus-programmable-is confirmed in the FN8840 datasheet short and applies specifically to the ISL88750HRW-T variant.
How does the ISL88750HRW-T handle battery hot-removal during Turbo mode operation?
The ISL88750HRW-T uses a charge pump with configurable slew rate on BGATE to rapidly enable the battery FET during Turbo mode entry, and actively controls turn-off timing to suppress VSYS droop during hot-removal. Test data in the ISL88750 documentation confirms <50 mV dip on VSYS within 2 µs of battery disconnect-enabling uninterrupted system operation in ultrabooks and tablets where users frequently swap batteries without powering down.
What package type and thermal characteristics does the ISL88750HRW-T use?
The ISL88750HRW-T is packaged in a 32-pin QFN (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad (EP). Its thermal resistance θJA is 36°C/W (typical on 2-layer board), and θJP is 5.5°C/W, enabling reliable operation up to 5 A continuous charge current with standard PCB copper pour. This package is explicitly specified for the ISL88750HRW-T in the FN8840 Rev. 1.00 datasheet short.
Can the ISL88750HRW-T be used with 2-cell, 3-cell, and 4-cell Li-ion battery configurations?
Yes, the ISL88750HRW-T natively supports 2-, 3-, and 4-cell Li-ion battery stacks as stated in the official Renesas documentation. Its voltage regulation loop, current sensing range, and gate drive capability are validated across this full cell-count range. No external component changes are required to switch between configurations-only SMBus register settings and appropriate external FET selection per cell count.
ISL88750HRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 2 ~ 4
- Current - Charging:
- -
- Programmable Features:
- -
- Fault Protection:
- -
- Charge Current - Max:
- -
- Battery Pack Voltage:
- -
- Voltage - Supply (Max):
- 22V
- Interface:
- SMBus
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (4x4)
ISL88750HRZ-T FAQ
1.How can I place an order for ISL88750HRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88750HRZ-T 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 ISL88750HRZ-T reliable?
The price and inventory of ISL88750HRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88750HRZ-T is usually 5 days.
3.What payment methods are accepted for ISL88750HRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88750HRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88750HRZ-T?
ISL88750HRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88750HRZ-T 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 ISL88750HRZ-T?
For technical support, including ISL88750HRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88750HRZ-T requirements.
6.How does Aetrix verify that ISL88750HRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL88750HRZ-T 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 ISL88750HRZ-T meets industry standards.
7.What is the process for return or replacement of ISL88750HRZ-T?
All ISL88750HRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88750HRZ-T, 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 ISL88750HRZ-T part is unused and in its original packaging.
Return procedure for ISL88750HRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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