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Renesas ISL91211AIKZ-TR5874
- Part No.:
- ISL91211AIKZ-TR5874
- Manufacturer:
- Renesas
- Package:
- 35-BGA
- Datasheet:
-
ISL91211AIKZ-TR5874.pdf
- Description:
- IC REG BUCK PROG TRPL 35BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL91211AIKZ-TR5874 from Renesas is a triple-output, 4-phase programmable PMIC optimized for high-efficiency synchronous buck conversion in space-constrained mobile and AI processor applications. It delivers up to 10A on VOUT1 (2-phase), 5A on VOUT2, and 5A on VOUT3, supports I²C/SPI configuration, operates from 2.5V–5.5V input, and achieves 94.7% peak efficiency at 3.8VIN/1.8VOUT.
For engineers reviewing the ISL91211AIKZ-TR5874 datasheet, ISL91211AIKZ-TR5874 pinout, ISL91211AIKZ-TR5874 application, or ISL91211AIKZ-TR5874 equivalent, key selection criteria include its 2+1+1 phase reconfigurability, ±0.7% system output accuracy with remote sensing, 2MHz–6MHz programmable switching frequency, integrated low-RDS(ON) MOSFETs (23mΩ HS / 9mΩ LS), and support for dynamic voltage scaling across all three outputs.
Technical Context
The ISL91211AIKZ-TR5874 implements Renesas' proprietary R5 control architecture, enabling ultra-fast transient response (e.g., 50A/µs per phase), seamless DCM/CCM transitions, and no external compensation. Its four independent buck controllers are software-reconfigurable into a 2+1+1 phase topology-two phases assigned to VOUT1, one each to VOUT2 and VOUT3-with dedicated PVIN, PH, and PGND terminals per stage.
It integrates four MPIOs and three GPIOs supporting multiple pin modes-including I²C (SCL/SDA), SPI (SCK/SS_B/MOSI/MISO), individual PGOOD outputs, and hardware DVS control-and features autonomous light-load operation via diode emulation and pulse-skipping modes to maximize battery life in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Triple output: 2+1+1 phase (VOUT1 = 10A, VOUT2/VOUT3 = 5A each) |
| Input Voltage Range | 2.5V–5.5V AVIN/PVIN - supports single-cell Li-ion and USB PD input rails |
| Switching Frequency | 2MHz–6MHz programmable - enables use of sub-1µH inductors for compact layout |
| Output Voltage Range | 0.3V–2.0V (10-bit resolution, 1.2–2.0mV step) - covers core, I/O, and memory rail requirements |
| Output Accuracy | ±0.7% over –40°C to +85°C with remote sensing - ensures stable SoC operation under load/thermal variation |
| Efficiency | 94.7% at 3.8VIN/1.8VOUT, full load - reduces thermal dissipation in sealed enclosures |
| Protection Features | UV/OV/OC/OT fault detection with automatic recovery - eliminates need for external supervision circuitry |
Pinout & Package
ISL91211AIKZ-TR5874 uses a 2.551mm × 3.670mm, 54-ball WLCSP package with 0.4mm pitch, optimized for ultra-thin mobile PCBs. Ball assignment follows JEDEC standard (balls down, A1 top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN_A, PVIN_B, PVIN_C, PVIN_D | Power input per phase | Independent input rails per buck stage - allows localized decoupling and noise isolation |
| PH_A, PH_B, PH_C, PH_D | Switching node per phase | Direct connection to external inductor - requires tight loop layout for EMI control |
| PGND_A–PGND_D | Phase-specific power ground | Separate return paths minimize ground bounce between phases |
| VOUT1–VOUT3, RTN1–RTN3 | Output sense and remote ground | Enables Kelvin sensing for ±0.7% regulation accuracy under PCB IR drop |
| MPIO0–MPIO3, GPIO0–GPIO2 | Configurable digital I/O | Supports I²C, SPI, PGOOD, DVS, or enable functions - reduces external logic count |
| EN, INT, WDOG_RST | System control signals | Asynchronous chip enable, interrupt flag, and watchdog reset - simplifies host processor integration |
Key Features
| Feature | Design Value |
|---|---|
| R5 Control Architecture | Eliminates external compensation components and delivers <1µs load transient response with no overshoot |
| Programmable Phase Mapping | Software-defined 2+1+1 configuration enables optimal current sharing and thermal distribution across three outputs |
| Integrated Power Stages | 23mΩ high-side + 9mΩ low-side MOSFETs reduce conduction loss and simplify BOM vs discrete solutions |
| Dynamic Voltage Scaling (DVS) | Independent 3mV/µs slew rate per output - supports real-time SoC performance/power tuning |
| Light-Load Efficiency Modes | Diode emulation + pulse skipping extends battery runtime in standby without sacrificing wake-up latency |
Applications
| Smartphone Core Power | AI Accelerator Rail |
|---|---|
Use Scenario: Powering application processor cores (e.g., ARM Cortex-A7x clusters) requiring rapid DVFS transitions during burst workloads. IC Role / Device Role / Timing Role: Triple-output PMIC delivering dynamically scaled VDD_CPU (VOUT1), VDD_GPU (VOUT2), and VDD_SOC_IO (VOUT3) with synchronized sequencing. Use Value: Achieves 94.7% efficiency at 10A/0.9V and ±0.7% accuracy under 50A/µs transients - maintains SoC stability during AI inference bursts. | Use Scenario: Supplying heterogeneous AI accelerators (e.g., NPUs, TPUs) with independent voltage/frequency domains. IC Role / Device Role / Timing Role: Configurable 2+1+1 phase controller providing high-current core rail (VOUT1) and isolated memory/I/O rails (VOUT2/VOUT3). Use Value: Enables simultaneous DVS on all three outputs at 3mV/µs - matches accelerator clock domain transitions without voltage droop. |
| Optical Transceiver Module | Enterprise SSD Controller |
Use Scenario: Powering multi-channel 100G/400G optical modules where thermal density and EMI must be minimized. IC Role / Device Role / Timing Role: Compact WLCSP PMIC supplying laser driver bias (VOUT1), DSP core (VOUT2), and SerDes I/O (VOUT3) from single 3.3V input. Use Value: 2.55mm × 3.67mm footprint and 4MHz switching allow <10mm² solution size - fits within tight QSFP-DD module constraints. | Use Scenario: Regulating NVMe SSD controller, NAND flash interface, and PCIe PHY rails in high-density storage systems. IC Role / Device Role / Timing Role: Sequenced triple-output regulator ensuring controlled power-up of controller (VOUT1), flash VCCQ (VOUT2), and PCIe termination (VOUT3). Use Value: Integrated UV/OV/OC protection and remote sensing eliminate need for external supervisors - improves BOM reliability in 24/7 data center operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91211BIIZ-T | Quad-output (1+1+1+1) configuration; identical package, pinout, and specs except VOUT4/RTN4 enabled and VOUT1 limited to 5A | Required when fourth independent rail (e.g., DDR termination) is needed; not drop-in for ISL91211AIKZ-TR5874's 2+1+1 topology | Select ISL91211BIIZ-T only if quad-rail capability and VOUT4 sensing are required; otherwise, ISL91211AIKZ-TR5874 provides higher VOUT1 current in same footprint |
| ISL91301AIIZ-T | 42-ball WLCSP, 4A per phase, triple-output (2+1+1); lower current rating, smaller package, 0.4mm pitch | Suitable for mid-tier mobile SoCs with lower power budgets; lacks MPIO/GPIO flexibility and R5 transient performance | Choose ISL91211AIKZ-TR5874 for >5A/core-rail designs requiring 5A/phase capability, ultra-fast transient response, and full I²C/SPI configurability |
Compared with ISL91211BIIZ-T, ISL91211AIKZ-TR5874 delivers 10A on VOUT1 versus 5A but sacrifices the fourth rail; versus ISL91301AIIZ-T, it provides 25% higher per-phase current, superior transient response, and expanded I/O mode options - making it optimal for flagship AI and smartphone platforms demanding maximum power density.
Availability
ISL91211AIKZ-TR5874 is available at Aetrix Electronics and suitable for smartphone core power, AI accelerator rails, optical transceiver modules, and enterprise SSD controllers requiring stable component supply and long-term design-in support.
Supply support for ISL91211AIKZ-TR5874 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 SoC solutions for automotive, industrial, and infrastructure markets.
The ISL91211A product line delivers highly integrated, reconfigurable PMICs designed specifically for advanced mobile and AI processors requiring high current density, precision regulation, and intelligent power management in minimal PCB area.
FAQ
What is the maximum continuous output current per phase for the ISL91211AIKZ-TR5874?
The ISL91211AIKZ-TR5874 supports up to 5A continuous output current per phase. In its default 2+1+1 configuration, this enables 10A on VOUT1 (dual-phase), and 5A each on VOUT2 and VOUT3. This rating is validated across the full operating temperature range (–40°C to +85°C) and input voltage range (2.5V–5.5V), with integrated 23mΩ high-side and 9mΩ low-side MOSFETs ensuring thermal robustness.
Does the ISL91211AIKZ-TR5874 support both I²C and SPI communication interfaces?
Yes, the ISL91211AIKZ-TR5874 supports both I²C and SPI through its four MPIOs and three GPIOs. Pin mode 0x0 configures MPIO0–MPIO3 as SCK/SS_B/MOSI/MISO and GPIO0/GPIO1 as I²C_CLK/I²C_SDA, enabling concurrent or selectable protocol use. The device supports I²C up to 3.4MHz and SPI up to 26MHz, with factory OTP programming available for custom pin mode configurations beyond default settings.
How does the ISL91211AIKZ-TR5874 achieve ±0.7% output voltage accuracy?
The ISL91211AIKZ-TR5874 achieves ±0.7% system accuracy over –40°C to +85°C using a combination of on-chip bandgap reference trimming, remote voltage sensing (via RTN1–RTN3 pins), and Renesas' R5 control architecture with no external compensation. This accuracy holds under full load and line/load transients, eliminating the need for post-production calibration or external feedback resistors in most designs.
Can the ISL91211AIKZ-TR5874 be used in a quad-output configuration like the ISL91211B?
No, the ISL91211AIKZ-TR5874 is functionally configured as a triple-output device. While it shares the same 54-ball WLCSP package and pinout as the ISL91211B, pins VOUT4 and RTN4 are internally shorted to ground and cannot be enabled as active outputs. The ISL91211AIKZ-TR5874 is strictly a 2+1+1 phase device; quad-output functionality requires the ISL91211BIIZ-T variant.
What thermal performance can be expected from the ISL91211AIKZ-TR5874 in a typical smartphone PCB layout?
In a standard 4-layer smartphone PCB with 1oz copper, thermal vias under the WLCSP pad, and moderate airflow, the ISL91211AIKZ-TR5874 exhibits a θJA of 42°C/W. At 10A output with 94.7% efficiency (3.8VIN/1.8VOUT), power dissipation is ~0.57W, resulting in ~24°C junction-to-ambient rise - well within the +125°C max operating junction temperature. Thermal shutdown activates at 143–162°C with 55°C hysteresis.
ISL91211AIKZ-TR5874 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:
- 3
- 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
- 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)
ISL91211AIKZ-TR5874 FAQ
1.How can I place an order for ISL91211AIKZ-TR5874 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91211AIKZ-TR5874 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 ISL91211AIKZ-TR5874 reliable?
The price and inventory of ISL91211AIKZ-TR5874 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91211AIKZ-TR5874 is usually 5 days.
3.What payment methods are accepted for ISL91211AIKZ-TR5874?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91211AIKZ-TR5874 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91211AIKZ-TR5874?
ISL91211AIKZ-TR5874 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91211AIKZ-TR5874 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 ISL91211AIKZ-TR5874?
For technical support, including ISL91211AIKZ-TR5874 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91211AIKZ-TR5874 requirements.
6.How does Aetrix verify that ISL91211AIKZ-TR5874 is sourced from the original manufacturer or authorized distributors?
All ISL91211AIKZ-TR5874 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 ISL91211AIKZ-TR5874 meets industry standards.
7.What is the process for return or replacement of ISL91211AIKZ-TR5874?
All ISL91211AIKZ-TR5874 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91211AIKZ-TR5874, 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 ISL91211AIKZ-TR5874 part is unused and in its original packaging.
Return procedure for ISL91211AIKZ-TR5874:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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