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Renesas ISL91212AIIZ-T
- Part No.:
- ISL91212AIIZ-T
- Manufacturer:
- Renesas
- Package:
- 35-WFBGA, WLCSP
- Datasheet:
-
ISL91212AIIZ-T.pdf
- Description:
- IC REG BUCK PROG 5A TRPL 35WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,661
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Product details
Overview
ISL91212AIIZ-T from Renesas is a triple-output, four-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 (1-phase), and 5A on VOUT3 (1-phase), supports I²C-based Dynamic Voltage Scaling from 0.3V to 2.0V, and integrates low-RDS(ON) MOSFETs (23mΩ HS / 9mΩ LS) with R5 Technology for ±0.7% system accuracy and ultra-fast transient response.
For engineers reviewing the ISL91212AIIZ-T datasheet, ISL91212AIIZ-T pinout, ISL91212AIIZ-T application, or ISL91212AIIZ-T equivalent, this device is selected for its compact 2.551mm × 3.67mm WLCSP package, programmable 2–6MHz PWM frequency, automatic Diode Emulation mode, and robust fault protection (UV/OV/OC/OT) - critical for smartphone SoC power rails, AR/VR display subsystems, and client SSD controllers.
Technical Context
The ISL91212AIIZ-T implements a configurable 2+1+1 phase topology across three independent buck regulators using Renesas' proprietary R5 control architecture, enabling seamless transitions between DCM and CCM without external compensation. Its four integrated buck controllers support reconfigurable power stage assignment, with dedicated PH_A–PH_D switching nodes and remote sensing (RTN1–RTN3) per output.
It features dual GPIOs (I²C SCL/SDA) and three MPIOs supporting multiple pin modes including individual PGOOD outputs, DVS control, or register pass-through - all programmable via I²C interface operating up to 3.4MHz. The device operates from 2.5V–5.5V AVIN/PVIN supplies and uses a 1.8V VIO rail for digital logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Triple output: 2+1+1 phase (VOUT1=10A, VOUT2=5A, VOUT3=5A) |
| Input Voltage Range | 2.5V–5.5V AVIN/PVIN - supports single-cell Li-ion and USB PD input rails |
| Output Voltage Range | 0.3V–2.0V per output (I²C-programmable in 1.2–2.0mV steps) |
| Switching Frequency | 2MHz–6MHz programmable - enables use of <220nH inductors for ultra-compact layout |
| System Accuracy | ±0.7% over –40°C to +85°C with remote voltage sensing - ensures stable core voltage under load/thermal variation |
| Efficiency | 94.7% at 3.8VIN/1.8VOUT, 5A load - minimizes thermal dissipation in sealed mobile enclosures |
| Protection Features | UV/OV/OC/OT detection with latch-off or retry behavior - prevents damage during abnormal operating conditions |
Pinout & Package
Package: 2.551mm × 3.67mm, 35-ball WLCSP with 0.5mm pitch (RoHS-compliant, MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN_A, PVIN_B, PVIN_C, PVIN_D | Power input for phases A–D | Independent high-side switch supply inputs - enable flexible input rail partitioning (e.g., separate battery/PMIC domains) |
| PH_A, PH_B, PH_C, PH_D | Switching node outputs | Four dedicated gate-drive outputs - configured as 2-phase (PH_D/PH_C) + 1-phase (PH_B) + 1-phase (PH_A) for ISL91212A |
| VOUT1–VOUT3, RTN1–RTN3 | Remote sense inputs | Enable Kelvin connection for precise regulation at point-of-load - critical for sub-1V SoC core rails |
| EN, INT, GPIO0/1, MPIO0–2 | Digital control & status I/O | Master enable, interrupt flag, and configurable I/Os - support I²C communication, PGOOD signaling, or DVS pin control |
| AVIN, AVIN_FILT, VIO, AGND, PGND_AB/CD | Analog/digital supply & ground | Separate analog/digital grounds and filtered AVIN reduce noise coupling into sensitive feedback paths |
Key Features
| Feature | Design Value |
|---|---|
| R5 Control Architecture | Eliminates need for external compensation components while delivering <1µs transient response and seamless DCM/CCM transitions |
| Integrated Power Stages | 23mΩ high-side + 9mΩ low-side MOSFETs - reduce conduction loss and simplify BOM vs discrete solutions |
| I²C Programmable DVS | Supports dynamic core voltage scaling at 3mV/µs slew rate - essential for DVFS in AI accelerators and application processors |
| Multi-mode Light-Load Operation | Automatic Diode Emulation and Pulse Skipping - extends battery runtime in standby/sleep states |
| Configurable MPIO/GPIO | Five programmable pins support I²C, PGOOD, or DVS functions - increases system flexibility without adding external logic |
Applications
| Smartphone Application Processor Power | AR/VR Display Subsystem |
|---|---|
Use Scenario: Powers CPU/GPU cores and memory interfaces in flagship smartphones requiring tight voltage tolerance and rapid load transients. IC Role / Device Role / Timing Role: Primary triple-rail PMIC delivering 10A/5A/5A with ±0.7% accuracy and <1µs transient recovery. Use Value: Enables aggressive DVFS and maintains SoC stability during burst workloads (e.g., camera capture, gaming), reducing thermal throttling. | Use Scenario: Supplies image signal processor (ISP), micro-OLED timing controller, and sensor fusion MCU in compact AR glasses. IC Role / Device Role / Timing Role: Compact 3-output PMIC with remote sensing and 2.55mm × 3.67mm footprint - fits within tight optical module PCB area. Use Value: Delivers clean, low-noise power with fast transient response to prevent display artifacts during head-motion-induced load changes. |
| Client SSD Controller Rail | AI Edge Inference Accelerator |
Use Scenario: Provides regulated 1.1V core, 1.8V I/O, and 3.3V auxiliary rails for NVMe SSD controllers in ultrabooks and thin clients. IC Role / Device Role / Timing Role: Triple-output PMIC with independent soft-start sequencing and UV/OV fault reporting per rail. Use Value: Ensures reliable power-up sequence and prevents data corruption during hot-plug or brown-out events. | Use Scenario: Supplies configurable voltage rails to heterogeneous AI accelerator cores (e.g., NPU, DSP) requiring dynamic voltage/frequency scaling. IC Role / Device Role / Timing Role: I²C-programmable PMIC supporting real-time DVS commands and multi-phase current sharing for thermal-aware power management. Use Value: Reduces average power by >20% during inference tasks through precise, software-controlled voltage adaptation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91212BIIZ-T | Quad-output (1+1+1+1 phase), identical package and pinout but different internal phase mapping; VOUT4/RTN4 functional instead of grounded | Required when four independent rails (e.g., SoC core + GPU + memory + I/O) are needed instead of three rails with higher current on one | Select ISL91212BIIZ-T only if quad-rail configuration is mandatory; ISL91212AIIZ-T offers higher per-rail current for dual-core or asymmetric loads |
| ISL91301AIIZ-T | Triple-output (2+1+1), 42-ball WLCSP, 4A per phase max, lower integration (no integrated MOSFETs in some variants), 0.4mm pitch | Suitable for cost-sensitive or thermally constrained designs where 5A/phase is not required and board space allows larger package | Choose ISL91301AIIZ-T for legacy designs or lower-power applications; ISL91212AIIZ-T provides higher current density and better light-load efficiency |
Compared with ISL91212BIIZ-T and ISL91301AIIZ-T, the ISL91212AIIZ-T uniquely balances 10A peak capability on VOUT1, ultra-compact 35-ball WLCSP packaging, and R5-based transient performance - making it optimal for next-gen mobile SoCs where board area and dynamic response are critical constraints.
Availability
ISL91212AIIZ-T is available at Aetrix Electronics and suitable for smartphone application processor power, AR/VR display subsystems, and client SSD controller rails requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ISL91212AIIZ-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 delivering microcontrollers, analog, power, and SoC products for automotive, industrial, infrastructure, and IoT markets.
The ISL91212AIIZ-T belongs to Renesas' high-density PMIC product line designed specifically for advanced mobile and edge AI platforms requiring multi-phase, I²C-configurable power delivery in minimal PCB area.
FAQ
What is the maximum continuous output current supported by the ISL91212AIIZ-T?
The ISL91212AIIZ-T supports up to 10A continuous on VOUT1 (configured as 2-phase), and 5A continuous on each of VOUT2 and VOUT3 (1-phase each). This is achieved using integrated 23mΩ high-side and 9mΩ low-side MOSFETs per phase, with thermal design validated for operation up to +85°C ambient.
Does the ISL91212AIIZ-T require external compensation components?
No, the ISL91212AIIZ-T does not require external compensation components. Its proprietary Renesas R5 Technology provides inherent loop stability across all operating conditions, eliminating the need for external RC networks while maintaining ±0.7% output accuracy and ultra-fast transient response.
How is Dynamic Voltage Scaling implemented on the ISL91212AIIZ-T?
The ISL91212AIIZ-T implements Dynamic Voltage Scaling via its I²C interface, allowing software-controlled adjustment of each output voltage from 0.3V to 2.0V in fine steps (1.2–2.0mV). Slew rate is programmable up to 3mV/µs, enabling precise, coordinated voltage transitions across multiple rails during processor DVFS events.
What package type and dimensions does the ISL91212AIIZ-T use?
The ISL91212AIIZ-T uses a 2.551mm × 3.67mm, 35-ball WLCSP package with 0.5mm ball pitch. It is RoHS-compliant, moisture sensitivity level 3 (MSL3), and qualified for Pb-free reflow per J-STD-020 - optimized for high-density mobile PCB layouts where space is at a premium.
Can the ISL91212AIIZ-T be used in quad-output configurations?
No, the ISL91212AIIZ-T is specifically configured as a triple-output device (2+1+1 phase). For quad-output operation, the pin-compatible ISL91212BIIZ-T must be used - it shares the same 35-ball WLCSP package but enables VOUT4/RTN4 functionality instead of grounding them as in the ISL91212AIIZ-T.
ISL91212AIIZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 35-WFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 10V
- Current - Output:
- 5A
- Frequency - Switching:
- 2MHz ~ 6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-WLCSP (2.55x3.67)
ISL91212AIIZ-T FAQ
1.How can I place an order for ISL91212AIIZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91212AIIZ-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 ISL91212AIIZ-T reliable?
The price and inventory of ISL91212AIIZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91212AIIZ-T is usually 5 days.
3.What payment methods are accepted for ISL91212AIIZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91212AIIZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91212AIIZ-T?
ISL91212AIIZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91212AIIZ-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 ISL91212AIIZ-T?
For technical support, including ISL91212AIIZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91212AIIZ-T requirements.
6.How does Aetrix verify that ISL91212AIIZ-T is sourced from the original manufacturer or authorized distributors?
All ISL91212AIIZ-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 ISL91212AIIZ-T meets industry standards.
7.What is the process for return or replacement of ISL91212AIIZ-T?
All ISL91212AIIZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL91212AIIZ-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 ISL91212AIIZ-T part is unused and in its original packaging.
Return procedure for ISL91212AIIZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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