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Renesas ISL94216AIRZ-T
- Part No.:
- ISL94216AIRZ-T
- Manufacturer:
- Renesas
- Category:
- Battery Management
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
ISL94216AIRZ-T.pdf
- Description:
- ISL94216AIRZ 16-CELL STANDALONE
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
ISL94216AIRZ-T from Renesas Electronics is a 16-cell Battery Front End (BFE) IC for high-voltage battery management systems, performing differential cell voltage monitoring (±5mV accuracy), 16-bit pack current measurement (±0.2%), and internal 8mA/cell balancing. It operates in SHIP mode (<18µA), IDLE mode (200µA), and supports I²C, SPI, and Single Wire Protocol for MCU interfacing in e-bike and energy storage applications.
For engineers reviewing the ISL94216AIRZ-T datasheet, ISL94216AIRZ-T pinout, ISL94216AIRZ-T application, or ISL94216AIRZ-T equivalent, this page delivers verified specifications, thermal-aware QFN-64 package details, GPIO-configurable alert logic, and real-world BMS integration guidance - all grounded in Renesas R16DS0180EU0205 Rev.2.05.
Technical Context
The ISL94216AIRZ-T integrates a 16-bit ADC with differential multiplexer for simultaneous VCELL and IPACK acquisition, plus dedicated fault detection registers for overvoltage, undervoltage, delta-V, short-circuit, and open-wire conditions. Its charge pump enables high-side FET gate drive without external boost circuitry.
System-level operation includes four configurable power modes (SHIP/LOW POWER/IDLE/SCAN), programmable scan timing, and register-mapped cell balancing control via CBn pins. The integrated 3.3V regulator supplies internal logic and supports external NPN-based current sensing with EMITTER/BASE/VDD interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count | 16-cell stack support - directly monitors up to 16 series-connected Li-ion/LiFePO₄ cells with VC0–VC16 inputs. |
| VCELL Accuracy | ±5mV - ensures precise state-of-charge estimation and cell imbalance detection within tight voltage thresholds. |
| IPACK Accuracy | ±0.2% - enables accurate Coulomb counting and load profiling for runtime prediction and protection. |
| Max Operating Voltage | 62V hot-plug rating - withstands transient surges during pack insertion into live systems without latch-up. |
| SHIP Mode Current | <18µA - extends shelf life of sealed battery packs during long-term storage without significant self-discharge. |
| Internal Balancing | 8mA per cell - actively equalizes cell voltages during charging without requiring external FETs or layout overhead. |
| Communication | I²C, SPI, Single Wire - provides flexible MCU interface options for proprietary BMS firmware with minimal pin count. |
Pinout & Package
ISL94216AIRZ-T is housed in a thermally enhanced 64-lead QFN package (9mm × 9mm, 0.5mm pitch) with exposed EPAD for PCB heat dissipation and low-impedance analog ground return.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC16 | Cell voltage inputs | Differential inputs for 16-series cell stack; VC0 = bottom cell negative, VC16 = top cell positive. |
| CB1–CB16 | Cell balancing control | Drain terminals for internal balancing FETs or gate drivers for external balancing MOSFETs. |
| CSP / CSN | Current sense differential pair | Connects across shunt resistor to measure bidirectional pack current with 16-bit resolution. |
| DFET / CFET | FET gate drivers | Drive external NMOS for discharge (DFET) and charge (CFET) path control with integrated charge pump. |
| GPIO0–GPIO3 | Configurable digital I/O | Open-drain outputs or inputs; usable for status LEDs, external FET enable, or system handshake signals. |
| ALRT | Interrupt output | Active-low open-drain alert signaling faults (OV/UV/delta-V/short/open-wire) to host MCU. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3V Regulator | Supplies internal logic and external peripherals; eliminates need for separate LDO in compact BMS designs. |
| Charge Pump for High-Side Drive | Enables direct gate drive of external high-side NMOS without bootstrap capacitor or external charge pump IC. |
| 4-Pin GPIO Port | Configurable as inputs, open-drain outputs, or LED drivers - reduces external component count for status indication. |
| Load/Charge Wakeup Detection | Automatically exits ultra-low-power SHIP mode upon pack connection or load activation - no manual reset required. |
| Open-Wire Fault Detection | Verifies integrity of all cell voltage connections before enabling balancing or protection - prevents false triggers in field use. |
Applications
| Electric Bikes & Scooters | Cordless Power Tools |
|---|---|
Use Scenario: 48V battery pack in pedal-assist e-bike with regenerative braking and real-time SOC estimation. IC Role / Device Role / Timing Role: Primary BFE IC performing cell voltage scanning, pack current monitoring, and automatic cell balancing during charge cycles. Use Value: ±5mV VCELL accuracy enables <1% SOC error over lifetime; 8mA internal balancing reduces pack degradation by maintaining ≤10mV inter-cell delta. |
Use Scenario: 36V lithium-ion battery in brushless cordless drill with high-pulse current demands and thermal shutdown. IC Role / Device Role / Timing Role: Core BMS front-end managing overcurrent protection, temperature-triggered derating, and fast-fault response via ALRT interrupt. Use Value: 62V hot-plug rating survives motor back-EMF transients; ±0.2% IPACK accuracy supports precise torque limiting and cycle-counting. |
| Home Energy Storage | Telecom Backup Systems |
Use Scenario: 42V/16S residential ESS with grid-tied inverter and remote cloud monitoring. IC Role / Device Role / Timing Role: Centralized cell monitor communicating via I²C to system MCU, enabling firmware-upgradable protection thresholds. Use Value: Single Wire Protocol option reduces wiring complexity in multi-module racks; SHIP mode <18µA preserves standby life during grid outages. |
Use Scenario: 24V/7S telecom backup battery in base station with strict uptime requirements and remote diagnostics. IC Role / Device Role / Timing Role: Fault-resilient BFE providing open-wire detection, VTEMP-based thermal derating, and priority fault reporting via ALRT. Use Value: Dedicated AUX0/xT0 and AUX1/xT1 inputs support dual NTC thermistors for top/bottom cell stack monitoring - critical for thermal runaway prevention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery front end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ7695200RSMR | 16-channel, ±2mV VCELL accuracy; integrated 1.8V LDO; no internal balancing FETs - requires external balancing circuitry. | Targeted at automotive-grade AEC-Q100 designs with stricter ASIL-B compliance; higher cost and larger footprint. | Select when highest voltage accuracy and functional safety certification are mandatory; avoid if internal balancing or SHIP-mode current <18µA is required. |
| MAX17853GCM+ | 14-channel (expandable to 16); ±3mV VCELL accuracy; supports daisy-chain architecture; 12mA balancing current. | Optimized for large-scale EV battery packs using modular daisy-chained topology; lacks Single Wire interface. | Choose for scalable multi-module BMS where communication robustness over long cables is prioritized over ultra-low SHIP current. |
Compared with BQ7695200RSMR and MAX17853GCM+, the ISL94216AIRZ-T uniquely combines sub-20µA SHIP mode, integrated 8mA balancing, and triple-protocol flexibility - making it optimal for cost-sensitive, space-constrained portable energy systems requiring rapid wake-on-load and minimal external components.
Availability
ISL94216AIRZ-T is available at Aetrix Electronics and suitable for electric mobility, cordless power tools, and home energy storage applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for ISL94216AIRZ-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 specializing in microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT markets.
The ISL94216AIRZ-T belongs to Renesas' Battery Management portfolio, engineered specifically for high-reliability, low-power, multi-cell lithium-based systems where precision monitoring, fault resilience, and seamless MCU integration are critical.
FAQ
What is the maximum supported battery stack voltage for the ISL94216AIRZ-T?
The ISL94216AIRZ-T supports up to 62V maximum input voltage, validated for hot-plug operation. This allows safe integration into nominal 48V (16S Li-ion) and 42V (14S LiFePO₄) battery packs with margin for transient overvoltage events. The device's VC0–VC16 inputs are rated for continuous operation across the full 0–62V range when configured per Renesas' recommended resistor divider network.
Does the ISL94216AIRZ-T include internal cell balancing capability?
Yes, the ISL94216AIRZ-T features on-die cell balancing transistors delivering 8mA per cell continuously. This internal balancing eliminates the need for external FETs in low-to-moderate imbalance scenarios. For higher balancing currents, CBn pins can drive external NMOS devices - confirmed in Section 6.2 and Register 0x25 of the R16DS0180EU0205 datasheet.
Which communication protocols does the ISL94216AIRZ-T support, and how are they selected?
The ISL94216AIRZ-T supports I²C, SPI, and Single Wire Protocol simultaneously. Protocol selection is determined by static CMS0/CMS1 pin states at power-up (Table 76, page 124). ADDR/CS serves dual function: chip select for SPI and address bit for I²C. MISO/SDA/SINGLE-WIRE pin auto-adapts based on active protocol - no firmware reconfiguration needed after boot.
How does the ISL94216AIRZ-T handle thermal monitoring in battery packs?
The ISL94216AIRZ-T provides three independent thermal monitoring paths: internal die temperature (register 0x5E), plus two external NTC channels via AUX0/xT0 and AUX1/xT1 pins. VTEMP pin supplies a switched 2.5V reference for thermistor biasing. All three channels feed into dedicated fault registers (0x13–0x1A, 0x22–0x23) with user-programmable thresholds and hysteresis - enabling zone-specific thermal derating and shutdown.
What is the purpose of the LDMON pin on the ISL94216AIRZ-T?
The LDMON pin on the ISL94216AIRZ-T monitors analog voltage to detect load presence, short-circuit, or open-circuit conditions on the battery pack output. When DFET is off, LDMON connects internally to DFET pin; when DFET is on, it measures voltage drop across the discharge FET. This enables automatic wake-from-SHIP mode on load connection and real-time short-circuit detection without additional sense resistors.
ISL94216AIRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Battery Balancing
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 16
- Fault Protection:
- Over Current, Over/Under Voltage, Short Circuit
- Interface:
- I2C, SPI
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-QFN (9x9)
ISL94216AIRZ-T FAQ
1.How can I place an order for ISL94216AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL94216AIRZ-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 ISL94216AIRZ-T reliable?
The price and inventory of ISL94216AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL94216AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL94216AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL94216AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL94216AIRZ-T?
ISL94216AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL94216AIRZ-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 ISL94216AIRZ-T?
For technical support, including ISL94216AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL94216AIRZ-T requirements.
6.How does Aetrix verify that ISL94216AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL94216AIRZ-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 ISL94216AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL94216AIRZ-T?
All ISL94216AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL94216AIRZ-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 ISL94216AIRZ-T part is unused and in its original packaging.
Return procedure for ISL94216AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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