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Renesas ISL91211BIKZ-TR5875
- Part No.:
- ISL91211BIKZ-TR5875
- Manufacturer:
- Renesas
- Package:
- 35-BGA
- Datasheet:
-
ISL91211BIKZ-TR5875.pdf
- Description:
- IC REG BUCK PROG QUAD 35BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,488
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Product details
Overview
ISL91211BIKZ-TR5875 from Renesas is a quad-output, 4-phase programmable PMIC optimized for high-efficiency synchronous buck conversion in space-constrained mobile and AI processor applications. It delivers up to 5A per phase, supports I²C/SPI configuration, features ±0.7% system output accuracy with remote sensing, and operates from 2.5V–5.5V input across –40°C to +85°C. Its 2.551mm × 3.67mm 54-ball WLCSP package enables compact power delivery for smartphones and optical transceivers.
For engineers reviewing the ISL91211BIKZ-TR5875 datasheet, ISL91211BIKZ-TR5875 pinout, ISL91211BIKZ-TR5875 application, or ISL91211BIKZ-TR5875 equivalent, key selection criteria include quad-output DVS capability, 4MHz switching frequency tolerance (±15%), integrated 23mΩ/9mΩ MOSFETs, 3mV/µs dynamic voltage slew rate, and support for 1+1+1+1 phase reconfiguration - all verified for client SSD and AR/VR SoC power rails.
Technical Context
The ISL91211BIKZ-TR5875 implements Renesas' proprietary R5 control architecture, enabling ultra-fast transient response (e.g., 50A/µs per phase), seamless DCM/CCM transitions without external compensation, and tight load regulation. Its four independent buck controllers are fully reconfigurable across four power stages (PH_A–PH_D) to support either single-phase (1+1+1+1) or multiphase topologies.
It integrates four MPIOs and three GPIOs supporting I²C (up to 3.4MHz) or SPI (up to 26MHz) communication, configurable via factory-programmable IO_PINMODE register. Output voltage is digitally programmable from 0.3V to 2.0V in 1.2–2.0mV steps depending on feedback divider setting, with independent DVS per output and hardware fault protection (UV/OV/OC/OT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Quad output (1+1+1+1 phase); each output independently configurable via I²C/SPI |
| Input Voltage Range | 2.5V–5.5V AVIN/PVIN; supports single-supply operation for compact layout |
| Per-Phase Current | 5A continuous; enables high-density power delivery with minimal external components |
| Switching Frequency | Programmable 2–6MHz; 4MHz typical with ±15% tolerance for EMI optimization |
| Output Accuracy | ±0.7% over –40°C to +85°C with remote sensing; ensures stable core voltage under thermal stress |
| Dynamic Slew Rate | 3mV/µs DVS transition; meets fast voltage scaling requirements of AI processors |
| Integrated FETs | 23mΩ high-side / 9mΩ low-side rDS(ON); reduces conduction loss and eliminates external MOSFETs |
Pinout & Package
Package: 2.551mm × 3.67mm, 54-ball WLCSP with 0.4mm pitch (RoHS-compliant, MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PH_A, PH_B, PH_C, PH_D | Power stage switching nodes | Four dedicated high-frequency switch outputs; enable flexible 1+1+1+1 or 2+1+1 phase assignment |
| VOUT1–VOUT4, RTN1–RTN4 | Output voltage sense and remote ground inputs | Supports Kelvin sensing for each output; RTN4 is functional only on ISL91211B variant |
| AVIN, PVIN_A–PVIN_D | Analog and phase-specific power inputs | Dual-input architecture allows independent supply routing for noise isolation and thermal management |
| MPIO0–MPIO3, GPIO0–GPIO2 | Multipurpose and general-purpose I/O | Configurable as I²C/SPI pins, PGOOD outputs, DVS controls, or hardware enables per IO_PINMODE register |
| EN, WDOG_RST, INT | System control and status signals | Asynchronous enable, watchdog reset, and interrupt output for fault reporting and sequencing coordination |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary R5 control scheme | Eliminates need for external compensation while delivering <10µs load transient recovery and <±0.7% output error |
| Independent Dynamic Voltage Scaling | Each of four outputs supports real-time voltage adjustment via I²C/SPI or hardware DVS pins |
| Automatic Diode Emulation & Pulse Skipping | Extends battery life in light-load conditions without compromising regulation stability |
| Integrated protection suite | Hardware-based UV/OV/OC/OT detection with latch-off or hiccup mode, plus short-circuit protection |
| Small solution size | Enables full quad-output PMIC design with <10mm² total footprint using 220nH inductors and low-ESR ceramic caps |
Applications
| Smartphone Application | AI Processor Power Rail |
|---|---|
Use Scenario: Power delivery for application processor cores, GPU, and memory subsystems in flagship smartphones. IC Role / Device Role / Timing Role: Quad-output PMIC providing independent, dynamically scaled voltages to CPU, GPU, LPDDR4/5, and always-on domain. Use Value: Enables simultaneous 0.5V–1.2V DVS across four rails with 3mV/µs slew rate, reducing SoC power by >20% during burst workloads. |
Use Scenario: Core voltage regulation for edge AI accelerators requiring rapid voltage transitions during inference cycles. IC Role / Device Role / Timing Role: High-bandwidth buck controller delivering 5A/phase with 50A/µs transient response to handle sudden compute load spikes. Use Value: Maintains ±15mV output deviation under 10A step load at 4MHz switching, eliminating need for bulk capacitance overhead. |
| Optical Transceiver Module | Client SSD Power Management |
Use Scenario: Compact power solution for 100G/400G QSFP-DD and OSFP modules with strict thermal and area constraints. IC Role / Device Role / Timing Role: Single-chip quad-rail regulator supplying laser driver bias, DSP core, SerDes, and auxiliary logic from shared 3.3V input. Use Value: 54-ball WLCSP footprint fits within 4.5mm × 6.5mm module PCB area; integrated MOSFETs reduce BOM count by 8 devices per rail. |
Use Scenario: Power sequencing and regulation for NVMe SSD controllers, NAND flash, and DRAM cache in ultrabook and enterprise client systems. IC Role / Device Role / Timing Role: Configurable PMIC managing power-up/down timing, voltage ramp rates, and fault reporting via I²C to host controller. Use Value: Built-in soft-start, independent enable control, and programmable power-on reset eliminate need for external sequencers or supervisors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91211AIKZ-T | Triple-output (2+1+1 phase) variant; lacks functional VOUT4/RTN4 pins and fourth buck controller | Suitable only for 3-rail systems; cannot replace ISL91211B in quad-rail designs without redesign | Select only when application requires exactly three regulated outputs and space permits same 54-ball footprint |
| ISL91301BIKZ-T | 42-ball 6×7 WLCSP; 4A per phase; dual-output (1+1+1+1) but limited to two active regulators simultaneously | Lower current capability and reduced feature set (no R5 control, no 4MHz option, no PGOOD per rail) | Consider for cost-sensitive, lower-power client SSD or IoT applications where 4A/rail suffices and board area is tighter |
Compared with ISL91211BIKZ-TR5875, the ISL91211AIKZ-T omits quad-rail functionality entirely, while the ISL91301BIKZ-T trades 5A/phase capability, R5 control, and full 4-rail independence for smaller package size and lower unit cost - making ISL91211BIKZ-TR5875 the sole choice for high-performance AI and optical transceiver power delivery.
Availability
ISL91211BIKZ-TR5875 is available at Aetrix Electronics and suitable for smartphones, AI processors, and optical transceiver modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant WLCSP packaging.
Supply support for ISL91211BIKZ-TR5875 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 embedded solutions for automotive, industrial, and communications markets.
The ISL91211B belongs to Renesas' high-density PMIC product line designed specifically for advanced mobile and AI SoCs requiring multi-rail, dynamically scalable, and thermally efficient power delivery in sub-5mm² footprints.
FAQ
What is the maximum continuous output current per phase for the ISL91211BIKZ-TR5875?
The ISL91211BIKZ-TR5875 supports up to 5A continuous output current per phase across all four buck stages under recommended operating conditions (2.5V–5.5V input, TA ≤ +85°C). This rating is validated with integrated 23mΩ high-side and 9mΩ low-side MOSFETs and applies to both CCM and DCM operation modes.
Does the ISL91211BIKZ-TR5875 support independent dynamic voltage scaling on all four outputs?
Yes, the ISL91211BIKZ-TR5875 supports independent DVS on all four outputs via I²C/SPI register writes or hardware DVS pins (configurable through IO_PINMODE). Each output can be programmed from 0.3V to 2.0V in fine steps (1.2–2.0mV), with a guaranteed slew rate of 3mV/µs for synchronized or staggered transitions.
What package type and dimensions does the ISL91211BIKZ-TR5875 use?
The ISL91211BIKZ-TR5875 uses a 54-ball Wafer-Level Chip-Scale Package (WLCSP) measuring 2.551mm × 3.67mm with 0.4mm ball pitch. It is RoHS-compliant, Pb-free, and rated MSL3 per J-STD-020, requiring standard reflow profile TB493 for assembly.
Can the ISL91211BIKZ-TR5875 operate with a 1.8V I/O supply?
Yes, the ISL91211BIKZ-TR5875 accepts VIO from 1.7V to AVIN (max 5.5V), and is fully specified for 1.8V I/O operation. All digital interfaces - including I²C (up to 3.4MHz) and SPI (up to 26MHz) - function reliably at 1.8V, with VIH = 1.35V and VIL = 0.5V thresholds confirmed across temperature.
How does the ISL91211BIKZ-TR5875 handle overtemperature conditions?
The ISL91211BIKZ-TR5875 incorporates an internal chip temperature sensor with thermal shutdown activation at 143°C–162°C (typical 152°C) and 55°C hysteresis. Upon trip, it disables all buck regulators and asserts INT; recovery occurs automatically after temperature falls below threshold minus hysteresis, with no latch required unless configured otherwise.
ISL91211BIKZ-TR5875 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 35-BGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 4
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 2V
- Current - Output:
- 5A, 5A, 5A, 5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-BGA (4.7x6.3)
ISL91211BIKZ-TR5875 FAQ
1.How can I place an order for ISL91211BIKZ-TR5875 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91211BIKZ-TR5875 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 ISL91211BIKZ-TR5875 reliable?
The price and inventory of ISL91211BIKZ-TR5875 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91211BIKZ-TR5875 is usually 5 days.
3.What payment methods are accepted for ISL91211BIKZ-TR5875?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91211BIKZ-TR5875 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91211BIKZ-TR5875?
ISL91211BIKZ-TR5875 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91211BIKZ-TR5875 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 ISL91211BIKZ-TR5875?
For technical support, including ISL91211BIKZ-TR5875 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91211BIKZ-TR5875 requirements.
6.How does Aetrix verify that ISL91211BIKZ-TR5875 is sourced from the original manufacturer or authorized distributors?
All ISL91211BIKZ-TR5875 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 ISL91211BIKZ-TR5875 meets industry standards.
7.What is the process for return or replacement of ISL91211BIKZ-TR5875?
All ISL91211BIKZ-TR5875 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91211BIKZ-TR5875, 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 ISL91211BIKZ-TR5875 part is unused and in its original packaging.
Return procedure for ISL91211BIKZ-TR5875:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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