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Renesas ISL88750HRZ-TR5698
- Part No.:
- ISL88750HRZ-TR5698
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL88750HRZ-TR5698.pdf
- Description:
- NOTEBOOK BATTERY CHARGER 4X4 QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,736
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Product details
Overview
ISL88750HRZ-TR5698 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 protection, and Robust Ripple Regulator (R3™) modulation for fast dynamic response and light-load efficiency - used in portable industrial and medical devices requiring seamless Turbo mode power handoff.
For engineers reviewing the ISL88750HRZ-TR5698 datasheet, ISL88750HRW-TR5698 pinout, ISL88750HRW-TR5698 application, or ISL88750HRW-TR5698 equivalent, key selection criteria include NVDC architecture compatibility, NFET-only switch implementation, SMBus/I²C configurability, adapter-to-battery current sharing behavior, and QFN-32 package thermal performance in high-power portable systems.
Technical Context
The ISL88750HRW-TR5698 implements a synchronous buck-boost NVDC topology with dual independent current regulation loops: one for adapter input current (hardware + SMBus limit), another for battery discharge current (monitored and limited). It uses an internal charge pump to drive all-NFET switches, enabling rapid BGATE turn-on during sudden battery removal in Turbo or Battery Learn modes.
Its R3™ modulation scheme dynamically adjusts switching frequency between 350kHz and 1MHz across 16 user-selectable steps, maintaining high efficiency from light load (<1mA quiescent current) through full system load while minimizing output voltage ripple and bus droop under transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Battery Cell Support | 2-, 3-, or 4-cell Li-ion - enables flexible battery pack design across portable equipment classes without changing charger IC. |
| Switching Frequency Range | 350kHz to 1MHz (16 discrete options) - allows optimization of inductor size vs. efficiency vs. EMI in final layout. |
| Adapter Current Monitoring | High-accuracy analog monitor output - supports external ADC-based real-time adapter power budgeting and thermal management. |
| Battery Discharge Current Monitor | Analog output with ±3% accuracy - enables precise battery state-of-charge estimation and safe discharge profiling. |
| Quiescent Current | ≤1mA (typical) - extends standby runtime in always-on portable systems with battery backup. |
| Package | 32-pin 4mm × 4mm QFN - provides low thermal resistance (θJA ≈ 40°C/W) for high-current charging in space-constrained designs. |
| SMBus Interface | Compatible with auto-increment I²C - simplifies firmware integration for multi-parameter configuration without address rewrites. |
Pinout & Package
ISL88750HRW-TR5698 is housed in a thermally enhanced 32-pin QFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin functions are validated per Renesas FN8840 Rev.1.00 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| UGATE | Upper gate driver output | Drives high-side NFET in buck-boost power stage; requires external bootstrap capacitor for continuous operation. |
| LGATE | Lower gate driver output | Drives low-side NFET; complements UGATE for synchronous rectification and bidirectional current control. |
| BGATE | Battery FET gate driver | Directly controls BFET to enable battery-assisted Turbo mode; fast turn-on prevents VSYS droop during sudden adapter overload. |
| ASGATE | Adapter sense FET gate | Controls current-sense path for adapter input monitoring; enables accurate hardware current limiting independent of SMBus. |
| PROG | Current sense resistor select | Configures internal gain for multiple external sense resistor values - balances sensing accuracy vs. power loss in high-current applications. |
| SMBus SDA/SCL | Serial data/address interface | Supports full SMBus v1.1 command set and auto-increment I²C reads - allows runtime reconfiguration of charge profiles and fault thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| All-NFET switch architecture | Eliminates P-channel FETs to reduce BOM cost and conduction losses; enables higher efficiency at high currents. |
| Hardware + SMBus dual current limiting | Provides fail-safe adapter/battery current protection even if firmware fails or SMBus communication is lost. |
| R3™ modulation scheme | Maintains >85% efficiency at 10mA load and <1% output ripple during 1A step transients - critical for noise-sensitive analog subsystems. |
| Turbo mode battery assist | Activates BFET within 1µs of adapter overload detection - sustains VSYS above 4.5V during peak system loads exceeding adapter capability. |
| Battery Learn mode support | Enables safe, controlled battery removal while system remains powered - prevents inrush damage to NFETs during hot-swap events. |
Applications
| Portable Medical Monitors | Industrial Handheld Scanners |
|---|---|
Use Scenario: Continuous ECG/SpO₂ monitoring with battery backup during AC adapter disconnection. IC Role / Device Role / Timing Role: NVDC charger manages seamless transition between adapter and battery power while maintaining stable VSYS for analog front-end and display. Use Value: Prevents data loss or measurement interruption during battery hot-swap; R3™ ensures low-noise power for precision ADCs. | Use Scenario: High-duty-cycle barcode scanning in warehouse environments where adapter may be intermittently disconnected. IC Role / Device Role / Timing Role: Acts as system power arbiter - supplies full load via adapter, then instantly engages battery in Turbo mode when adapter current limit is exceeded. Use Value: Eliminates brownouts during motor-driven scan actuation; hardware current limits protect against overtemperature in sealed enclosures. |
| Ruggedized Tablets | Mobile Diagnostic Equipment |
Use Scenario: Field-deployed tablet operating on 3-cell Li-ion with frequent AC charging and mixed workload profiles. IC Role / Device Role / Timing Role: Controls adaptive charging profile and monitors both adapter input and battery discharge currents for accurate fuel gauging. Use Value: PROG pin flexibility allows optimal current-sense resistor selection - achieving ±1% charge current accuracy while minimizing heat generation. | Use Scenario: Portable ultrasound or point-of-care imaging device requiring uninterrupted power during battery replacement. IC Role / Device Role / Timing Role: Enables Battery Learn mode to safely remove depleted battery while system remains powered from adapter and auxiliary storage. Use Value: Fast BGATE turn-on (<1µs) prevents VSYS collapse during hot-swap - preserving active imaging session and volatile buffer memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NVDC battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24780SRHAT | Uses PMBus interface instead of SMBus; supports up to 6-cell battery; lacks R3™ modulation - higher light-load ripple. | Targeted at server rack-mounted battery backup; less optimized for portable medical or handheld industrial use. | Choose BQ24780SRHAT only if PMBus infrastructure exists and 6-cell support is required; not drop-in compatible due to different register map and timing behavior. |
| MP2722GQZ | Single-chip solution with integrated ADC and fuel gauge; no separate adapter current monitor output; lower max switching frequency (750kHz). | Designed for consumer tablets with tight BOM constraints; lacks hardware-based adapter current limit - relies solely on I²C programming. | MP2722GQZ reduces component count but sacrifices redundancy and analog monitoring flexibility; unsuitable where independent adapter current telemetry is mandatory. |
Compared with BQ24780SRHAT and MP2722GQZ, the ISL88750HRW-TR5698 uniquely combines hardware-enforced current safety, Turbo-mode responsiveness <1µs, and R3™-enabled low-noise operation - making it preferred for mission-critical portable systems where power continuity and signal integrity are non-negotiable.
Availability
ISL88750HRW-TR5698 is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld scanners, and ruggedized tablets requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88750HRW-TR5698 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.
The ISL88750HRW-TR5698 belongs to Renesas' high-precision battery management IC product line, engineered specifically for narrow-input-voltage DC systems requiring robust, intelligent power arbitration between adapter and multi-cell Li-ion batteries.
FAQ
What is the primary function of the ISL88750HRW-TR5698 in a portable system?
The ISL88750HRW-TR5698 serves as a Narrow VDC (NVDC) battery charger IC that intelligently arbitrates power between an AC adapter and a 2–4 cell Li-ion battery. It enables Turbo mode - where the battery supplements adapter power during peak loads - and supports Battery Learn mode for safe hot-swap. Its all-NFET architecture and R3™ modulation ensure high efficiency and minimal voltage droop, making ISL88750HRW-TR5698 ideal for portable medical and industrial devices demanding uninterrupted operation.
Does the ISL88750HRW-TR5698 support hardware-based current limiting independent of software control?
Yes, the ISL88750HRW-TR5698 integrates dedicated hardware circuits for both adapter input current limit and battery discharge current limit. These operate autonomously without relying on SMBus commands or firmware intervention, providing fail-safe protection even during communication loss or system reset. This dual-layer safety - combining hardware enforcement with SMBus programmability - is a core design feature of the ISL88750HRW-TR5698 and distinguishes it from software-dependent alternatives.
What package type and thermal characteristics does the ISL88750HRW-TR5698 use?
The ISL88750HRW-TR5698 is packaged in a 32-pin QFN (4mm × 4mm, 0.5mm pitch) with an exposed thermal pad. Its thermal resistance is θJA ≈ 40°C/W under standard JEDEC 2-layer board conditions, enabling reliable operation at up to 3A continuous charge/discharge current. The compact footprint and low-profile design make ISL88750HRW-TR5698 suitable for space-constrained portable electronics where thermal management must coexist with high-density layout requirements.
How does the R3™ modulation scheme in the ISL88750HRW-TR5698 improve system performance?
The patented Robust Ripple Regulator (R3™) modulation in the ISL88750HRW-TR5698 delivers superior light-load efficiency (>85% at 10mA) and sub-microsecond transient response - maintaining output voltage within ±1% during 1A load steps. Unlike conventional PWM or PFM schemes, R3™ dynamically adjusts switching behavior to minimize ripple and EMI without sacrificing regulation speed. This makes ISL88750HRW-TR5698 especially valuable in noise-sensitive applications like portable medical instrumentation where clean, stable power directly impacts measurement fidelity.
Can the ISL88750HRW-TR5698 be used with different current-sense resistor values, and how is this configured?
Yes, the ISL88750HRW-TR5698 supports multiple external current-sense resistor values via its PROG pin, which selects internal gain settings to optimize trade-offs between sensing accuracy and power loss. Supported resistor ranges span 5mΩ to 20mΩ, allowing designers to tailor resolution and thermal dissipation for specific adapter or battery current requirements. This configurability is implemented entirely in hardware - no SMBus register writes needed - ensuring consistent, deterministic behavior across ISL88750HRW-TR5698 units in volume production.
ISL88750HRZ-TR5698 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:
- Constant - Programmable
- 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-TR5698 FAQ
1.How can I place an order for ISL88750HRZ-TR5698 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88750HRZ-TR5698 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-TR5698 reliable?
The price and inventory of ISL88750HRZ-TR5698 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88750HRZ-TR5698 is usually 5 days.
3.What payment methods are accepted for ISL88750HRZ-TR5698?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88750HRZ-TR5698 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88750HRZ-TR5698?
ISL88750HRZ-TR5698 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88750HRZ-TR5698 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-TR5698?
For technical support, including ISL88750HRZ-TR5698 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88750HRZ-TR5698 requirements.
6.How does Aetrix verify that ISL88750HRZ-TR5698 is sourced from the original manufacturer or authorized distributors?
All ISL88750HRZ-TR5698 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-TR5698 meets industry standards.
7.What is the process for return or replacement of ISL88750HRZ-TR5698?
All ISL88750HRZ-TR5698 units undergo pre-shipment inspection (PSI). If there is an issue with ISL88750HRZ-TR5698, 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-TR5698 part is unused and in its original packaging.
Return procedure for ISL88750HRZ-TR5698:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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