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Renesas ISL94216IRZ
- Part No.:
- ISL94216IRZ
- Manufacturer:
- Renesas
- Category:
- Battery Management
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
ISL94216IRZ.pdf
- Description:
- IC BATT MON MULTI-CHEM 16C 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:348
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Product details
Overview
ISL94216IRZ from Renesas Electronics is a 16-cell Battery Front End (BFE) IC for high-voltage battery management systems, performing precision cell voltage monitoring (±5mV), pack current sensing (±0.2%), and integrated 8mA/cell balancing. It operates across 12–55V battery packs and supports I²C, SPI, and Single-Wire interfaces in e-bike, power tool, and energy storage applications.
For engineers reviewing the ISL94216IRZ datasheet, ISL94216IRZ pinout, ISL94216IRZ application, or ISL94216IRZ equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative parts - all grounded in FN8936 Rev.3.03 and Renesas' official ordering information.
Technical Context
The ISL94216IRZ integrates a differential multiplexer and 16-bit ADC to scan up to 16 series-connected cells, measuring VCELL, IPACK, internal temperature, and auxiliary analog inputs (xT0/xT1). Its charge pump enables gate drive for external low-side CFET/DFETs, while configurable GPIOs support wakeup detection and system-level fault signaling.
It implements hierarchical power states-SHIP mode (<18µA), IDLE mode (200µA), and SCAN mode-with programmable scan delay, low-power timers, and open-wire detection on all VCn/CBn pins. Fault registers (OV/UV, delta-V, overcurrent, thermal) feed priority-based alert logic via the ALRT pin and status registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cell Count | 16-series cell monitoring with VC0–VC16 inputs and CB1–CB16 balancing control terminals. |
| VCELL Accuracy | ±5mV - ensures tight state-of-charge estimation and cell imbalance detection down to millivolt level. |
| IPACK Accuracy | ±0.2% - enables precise Coulomb counting and charge/discharge termination in high-current tools and EVs. |
| Supply Current | 200µA (IDLE), <18µA (SHIP) - extends shelf life and reduces parasitic drain in stored battery packs. |
| Communication | I²C, SPI, and Single-Wire - allows flexible MCU interface selection without requiring dedicated protocol hardware. |
| Hot Plug Rating | 62V - supports safe hot insertion into partially charged 48V battery systems without latch-up or damage. |
| Internal Balancing | 8mA per cell - provides passive balancing sufficient for moderate imbalance correction without external FETs. |
Pinout & Package
ISL94216IRZ 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 ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC0–VC16 | Cell voltage sense inputs | Differential inputs for 16-series battery string; VC0 = pack negative, VC16 = pack positive; each connects between adjacent cells via external resistor dividers. |
| CB1–CB16 | Cell balancing control outputs | Drain terminals for internal balancing FETs or gate drivers for external balancing MOSFETs; enable per-cell discharge paths. |
| CSP / CSN | Current sense differential inputs | High-side or low-side shunt monitor inputs supporting bidirectional pack current measurement with ±0.2% accuracy. |
| CFET / DFET | FET gate drive outputs | Low-side gate drivers for external charge/discharge FETs; support independent ON/OFF control and fault shutdown. |
| MISO/SDA/SINGLE-WIRE | Multi-protocol data output | Shared pin supporting SPI MISO, I²C SDA, or Single-Wire bidirectional communication - selected by ADDR/CS configuration. |
| ALRT | Open-drain fault alert output | Active-low interrupt signal indicating priority fault (cell OV/UV, thermal, open-wire, etc.) per register 0x63 and mask 0x83. |
| GPIO0–GPIO3 | Configurable digital I/O | Programmable as inputs (wakeup detection), outputs (LED/status), or analog inputs (with internal ADC); controlled via register 0x12. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3V regulator | Supplies internal logic and external peripherals; eliminates need for external LDO in most BMS subsystems. |
| Charge pump (VCPMP) | Generates boosted gate drive voltage for low-side CFET/DFET control, enabling full enhancement of N-channel MOSFETs. |
| Open-wire detection | Validates continuity of all VCn and CBn connections during startup and runtime - critical for safety-critical 48V+ battery systems. |
| Automatic cell balancing | Configurable via registers 0x25–0x29; initiates balancing when delta-V exceeds threshold (0x2A) and stops at VEOC (0x2D). |
| Wakeup detection circuitry | Monitors WAKEUP pin and charge/load events to exit SHIP/LOW POWER modes - enables zero-power storage with instant resumption. |
Applications
| e-Bikes & E-Scooters | Cordless Power Tools |
|---|---|
|
Use Scenario: 48V lithium-ion battery pack powering mid-drive motor and regenerative braking. IC Role / Device Role / Timing Role: Primary BFE IC performing real-time cell voltage scanning, pack current monitoring, and automatic balancing during rest periods. Use Value: Prevents overvoltage-induced cell venting during fast charging and maintains capacity consistency across 16 cells over 500+ cycles. |
Use Scenario: 36V/40V battery pack for brushless drill/driver with high pulse discharge (≥30A). IC Role / Device Role / Timing Role: High-accuracy current sensing and thermal monitoring IC triggering load cutoff before MOSFET thermal runaway. Use Value: Enables ±0.2% IPACK accuracy to avoid false overcurrent trips during torque bursts, extending tool runtime. |
| Home Energy Storage | Telecom Backup Systems |
|
Use Scenario: 48V modular LiFePO₄ stack (4S16P) used in residential solar storage with 10-year warranty. IC Role / Device Role / Timing Role: Long-term cell health monitor using periodic delta-V tracking and internal temperature correlation. Use Value: Detects early cell degradation via register 0x50–0x51 (VCELL Max Delta Voltage), enabling predictive maintenance alerts. |
Use Scenario: 54V telecom backup battery (13S Li-ion) operating in temperature-controlled cabinets. IC Role / Device Role / Timing Role: Low-power BFE IC maintaining SHIP mode (<18µA) during standby, waking only for monthly self-test scans. Use Value: Reduces annual standby drain to <1.5% of pack capacity - critical for multi-year unattended operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery front end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL94212IRZ | 12-cell support, daisy-chain capable, no internal balancing, higher sleep current (12µA). | Targeted at modular, scalable BMS stacks where multiple ICs monitor >16 cells via daisy chain. | Select when system requires >16 cells or board space constraints favor distributed architecture over single-chip 16-cell solution. |
| RAJ240100GBG | 10-cell max, integrated 15/18-bit ADC, embedded state machine, 50µA SHIP current. | Designed for cost-sensitive, lower-cell-count applications with minimal MCU intervention required. | Select when firmware overhead must be minimized and pack voltage stays ≤50V with ≤10 cells. |
Compared with ISL94216IRZ, ISL94212IRZ trades single-package simplicity for scalability and RAJ240100GBG sacrifices cell count and external interface flexibility for ultra-low power and autonomous operation - making ISL94216IRZ optimal for fixed 16-cell, high-accuracy, MCU-managed BMS designs.
Availability
ISL94216IRZ is available at Aetrix Electronics and suitable for e-bike battery packs, cordless power tool systems, and home energy storage solutions requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for ISL94216IRZ 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 IoT markets.
The ISL94216IRZ belongs to Renesas' Battery Management portfolio, engineered specifically for high-reliability, high-accuracy monitoring of 12–55V multi-cell lithium-based battery packs in mobility and energy infrastructure.
FAQ
What is the maximum supported battery pack voltage for the ISL94216IRZ?
The ISL94216IRZ supports battery packs with operating voltages from 12V to 55V, and features a 62V hot-plug rating. This allows safe integration into 48V nominal systems - including e-bikes, power tools, and energy storage - even when partially charged or subjected to transient overvoltage events.
Does the ISL94216IRZ support daisy-chain configuration with other BMS ICs?
No, the ISL94216IRZ does not support daisy-chain topology. It is designed as a standalone 16-cell front-end IC with dedicated I²C, SPI, and Single-Wire interfaces. For daisy-chain capability, Renesas offers the ISL94212IRZ, which supports up to 12 cells per device and multi-drop communication.
How does the ISL94216IRZ handle cell balancing - internally or externally?
The ISL94216IRZ provides both internal and external cell balancing. Its on-die circuitry delivers 8mA per cell via CBn pins. For higher balancing currents, external FETs can be driven using the same CBn pins, with control managed through registers 0x25–0x29 and fault thresholds in 0x2A–0x2D.
What communication protocols does the ISL94216IRZ support, and how are they selected?
The ISL94216IRZ supports I²C, SPI, and Single-Wire protocols on shared pins (e.g., MISO/SDA/SINGLE-WIRE and ADDR/CS). Protocol selection is determined by the logic state of ADDR/CS at power-up and register configuration - no hardware rework is needed to switch between interfaces.
Can the ISL94216IRZ operate without an external microcontroller?
No, the ISL94216IRZ is not a stand-alone BMS controller. It requires an external MCU to configure registers, interpret fault conditions, and manage balancing sequences. Unlike RAJ240xxx devices, it contains no embedded state machine or autonomous decision logic.
ISL94216IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Battery Monitor
- Battery Chemistry:
- Multi-Chemistry
- Number of Cells:
- 16
- Fault Protection:
- Over Temperature
- Interface:
- I2C, SPI
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-QFN (9x9)
ISL94216IRZ FAQ
1.How can I place an order for ISL94216IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL94216IRZ 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 ISL94216IRZ reliable?
The price and inventory of ISL94216IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL94216IRZ is usually 5 days.
3.What payment methods are accepted for ISL94216IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL94216IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL94216IRZ?
ISL94216IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL94216IRZ 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 ISL94216IRZ?
For technical support, including ISL94216IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL94216IRZ requirements.
6.How does Aetrix verify that ISL94216IRZ is sourced from the original manufacturer or authorized distributors?
All ISL94216IRZ 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 ISL94216IRZ meets industry standards.
7.What is the process for return or replacement of ISL94216IRZ?
All ISL94216IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL94216IRZ, 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 ISL94216IRZ part is unused and in its original packaging.
Return procedure for ISL94216IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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