My Inquiry
My Account
Renesas ISL91211AIKZ-TR5873
- Part No.:
- ISL91211AIKZ-TR5873
- Manufacturer:
- Renesas
- Package:
- 35-BGA
- Datasheet:
-
ISL91211AIKZ-TR5873.pdf
- Description:
- IC REG BUCK PROG TRPL 35BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,964
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL91211AIKZ-TR5873 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 (1-phase), and 5A on VOUT3 (1-phase); supports 2.5V–5.5V input; features R5 control architecture for ±0.7% system accuracy and 50A/µs transient response; and targets smartphone SoC core/rail power delivery.
For engineers reviewing the ISL91211AIKZ-TR5873 datasheet, ISL91211AIKZ-TR5873 pinout, ISL91211AIKZ-TR5873 application, or ISL91211AIKZ-TR5873 equivalent, key selection criteria include its 2+1+1 phase reconfigurability, I²C/SPI programmability of 0.3–2.0V outputs, integrated 23mΩ/9mΩ MOSFETs, 4MHz switching frequency, and WLCSP-54 package with 0.4mm pitch for ultra-compact layout.
Technical Context
The ISL91211AIKZ-TR5873 implements Renesas' proprietary R5 control architecture-enabling ultra-fast transient response (±65.5mV deviation under 10A/200ns load step), seamless DCM/CCM transitions, and no external compensation. Its four independent buck controllers are software-reconfigurable into 2+1+1 phase topology for VOUT1/VOUT2/VOUT3, with dedicated remote sensing (RTN1–RTN3) and per-rail dynamic voltage scaling.
It integrates low-RDS(ON) high-side (23mΩ) and low-side (9mΩ) MOSFETs, supports programmable PWM frequency (2–6MHz), and uses automatic diode emulation + pulse skipping at light load to achieve 94.7% peak efficiency (3.8VIN/1.8VOUT). The device operates across –40°C to +85°C with ±0.7% output accuracy and robust fault protection (UV/OV/OC/OT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Triple output: 2-phase (VOUT1), 1-phase (VOUT2), 1-phase (VOUT3) - enables high-current core rail + dual lower-current rails from single IC |
| Max Output Current per Phase | 5A continuous - supports 10A on VOUT1 via 2-phase interleaving, reducing ripple and thermal stress |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V) and USB PD (5V) input sources |
| Output Voltage Range | 0.3V to 2.0V (I²C-programmable in 1.2–2.0mV steps) - covers modern SoC core, GPU, and memory rail requirements |
| Switching Frequency | Programmable 2MHz to 6MHz - allows optimization of inductor size (e.g., 220nH) and EMI profile |
| System Accuracy | ±0.7% over –40°C to +85°C with remote sensing - ensures stable voltage under PCB IR drop and thermal drift |
| Transient Response | 50A/µs per phase capability - maintains regulation during rapid CPU/GPU load changes without external compensation |
Pinout & Package
ISL91211AIKZ-TR5873 is housed in a 2.551mm × 3.670mm, 54-ball WLCSP package with 0.4mm ball pitch, optimized for minimal PCB footprint and high-density mobile designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN_A, PVIN_B, PVIN_C, PVIN_D | Power input for phases A–D | Independent high-current inputs allow localized decoupling and reduce shared impedance between phases |
| PH_A, PH_B, PH_C, PH_D | Switching node outputs | Drive external inductors; PH_D and PH_C jointly serve VOUT1 in 2-phase mode |
| VOUT1, VOUT2, VOUT3 | Output voltage sense inputs | Enable remote feedback for precise regulation at point-of-load; VOUT4 shorted to GND for ISL91211A |
| RTN1, RTN2, RTN3 | Remote ground sense inputs | Compensate for PCB trace resistance between IC and load, critical for <1% accuracy at high current |
| MPIO0–MPIO3, GPIO0–GPIO2 | Multipurpose and general-purpose I/O | Configurable as I²C/SPI, PGOOD, DVS, or enable pins - supports flexible system-level control without extra logic |
| EN, INT, WDOG_RST | Control and status signals | Hardware enable with NMOS threshold; open-drain interrupt for fault reporting; watchdog reset for system recovery |
Key Features
| Feature | Design Value |
|---|---|
| R5 Control Architecture | Eliminates need for external compensation components while delivering <1µs transient response and tight load regulation |
| 2+1+1 Phase Reconfiguration | Enables 10A on VOUT1 (e.g., CPU core) plus two independent 5A rails (e.g., GPU + memory) from one compact IC |
| I²C/SPI Programmability | Allows real-time DVS, sequencing, and fault mask configuration - essential for adaptive power management in AI processors |
| Integrated Power Stages | 23mΩ HS / 9mΩ LS MOSFETs reduce conduction loss and simplify BOM - supports >94% efficiency at 3.8VIN/1.8VOUT |
| Comprehensive Protection | Hardware-based UV/OV/OC/OT detection with latched or auto-retry response - ensures system reliability under fault conditions |
Applications
| Smartphone Application | AI Processor Power Delivery |
|---|---|
|
Use Scenario: Powering application processor (AP) cores, GPU, and LPDDR memory in flagship smartphones. IC Role / Device Role: Primary PMIC managing three independent rails with dynamic voltage scaling synchronized to workload. Use Value: 2+1+1 phase topology delivers 10A to CPU core with low ripple and thermal density, while enabling fast DVS (3mV/µs) to extend battery life. |
Use Scenario: Supplying multiple voltage domains (core, cache, I/O) of edge AI accelerators requiring rapid load transients. IC Role / Device Role: Triple-rail power controller with R5 loop stability and 50A/µs transient capability for burst-mode inference workloads. Use Value: ±0.7% accuracy with remote sensing maintains timing margins under PCB IR drop; programmable 4MHz switching minimizes inductor size. |
| AR/VR Glasses Power System | Optical Transceiver Module |
|
Use Scenario: Compact power solution for wearable AR/VR headsets with constrained board area and strict thermal limits. IC Role / Device Role: Space-optimized PMIC delivering regulated voltages to display driver, image sensor, and SoC from single-cell battery. Use Value: 2.55mm × 3.67mm WLCSP-54 package reduces footprint by >40% vs. discrete solutions; diode emulation extends standby time. |
Use Scenario: Powering laser drivers, TIAs, and DSPs in pluggable optical modules (QSFP-DD, OSFP) with strict EMI requirements. IC Role / Device Role: Low-noise, high-PWM-frequency buck controller for analog and digital supply domains. Use Value: 6MHz max switching frequency shifts noise spectrum above sensitive RF bands; integrated MOSFETs reduce layout sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91211BIIZ-T | Quad-output (1+1+1+1) variant with identical package, specs, and pinout - VOUT4 active instead of grounded | Required when fourth independent rail (e.g., I/O or auxiliary) is needed; not drop-in for ISL91211A's 2+1+1 topology | Select ISL91211BIIZ-T only if quad-rail operation is required; firmware and layout must support VOUT4/RTN4 routing |
| ISL91301AIIZ-T | 42-ball WLCSP, 4A per phase, 2+1+1 config - smaller package but lower current rating and reduced feature set (no MPIO3, limited DVS modes) | Suitable for mid-tier mobile SoCs with <8A core demand; lacks 50A/µs transient performance and full R5 loop capabilities | Choose ISL91211AIKZ-TR5873 over ISL91301AIIZ-T when >8A core current, ultra-fast transient response, or full SPI/I²C configurability is required |
Compared with ISL91211BIIZ-T, the ISL91211AIKZ-TR5873 provides higher per-rail current capacity in 2-phase mode for CPU cores, while ISL91301AIIZ-T trades current and control flexibility for smaller footprint and cost - making ISL91211AIKZ-TR5873 optimal for flagship mobile and AI edge platforms demanding both density and performance.
Availability
ISL91211AIKZ-TR5873 is available at Aetrix Electronics and suitable for smartphone AP power, AI accelerator rail management, and AR/VR wearable systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL91211AIKZ-TR5873 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 consumer markets.
The ISL91211A belongs to Renesas' high-density PMIC product line, designed specifically for advanced mobile and AI processor power delivery - emphasizing ultra-small form factor, multi-phase flexibility, and real-time programmability.
FAQ
What is the maximum continuous output current supported by ISL91211AIKZ-TR5873 on its primary rail?
The ISL91211AIKZ-TR5873 supports up to 10A continuous output current on VOUT1 using its 2-phase configuration (PH_D and PH_C). Each phase delivers 5A, and interleaving reduces output ripple and thermal concentration. This is validated across the full operating temperature range (–40°C to +85°C) with appropriate PCB layout and thermal management per the datasheet guidelines.
Does ISL91211AIKZ-TR5873 support dynamic voltage scaling (DVS) for all three outputs independently?
Yes, the ISL91211AIKZ-TR5873 supports independent Dynamic Voltage Scaling for each of its three outputs via I²C or configurable MPIO pins. DVS slew rate is programmable up to 3mV/µs, and output voltage can be adjusted from 0.3V to 2.0V in fine steps (1.2–2.0mV), enabling precise power-state transitions for CPU, GPU, and memory rails in real time.
What package type and dimensions does ISL91211AIKZ-TR5873 use?
The ISL91211AIKZ-TR5873 uses a 54-ball Wafer-Level Chip-Scale Package (WLCSP) measuring 2.551mm × 3.670mm with 0.4mm ball pitch. It is RoHS-compliant, Pb-free, and rated MSL3 per J-STD-020. The package supports fine-pitch SMT assembly and is optimized for ultra-dense mobile PCB layouts.
How does the R5 control architecture in ISL91211AIKZ-TR5873 improve transient response compared to conventional buck controllers?
The R5 control architecture in ISL91211AIKZ-TR5873 enables sub-microsecond transient response - demonstrated as ±65.5mV deviation under a 10A/200ns load step - by eliminating external compensation and optimizing loop gain across load and line variations. This architecture also ensures seamless DCM/CCM transitions and tight ±0.7% output accuracy without tuning.
Can ISL91211AIKZ-TR5873 be used with both I²C and SPI interfaces simultaneously?
No - the ISL91211AIKZ-TR5873 supports either I²C or SPI communication, selected via the SS_B pin (MPIO1): low for SPI, high for I²C. Both protocols share the same MPIO0–MPIO3 pins with configurable roles (SCK/SS_B/MOSI/MISO or I²C_CLK/I²C_SDA), but concurrent operation is not supported. Pin mode must be configured at startup via OTP or register setting.
ISL91211AIKZ-TR5873 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-TR5873 FAQ
1.How can I place an order for ISL91211AIKZ-TR5873 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91211AIKZ-TR5873 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-TR5873 reliable?
The price and inventory of ISL91211AIKZ-TR5873 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91211AIKZ-TR5873 is usually 5 days.
3.What payment methods are accepted for ISL91211AIKZ-TR5873?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91211AIKZ-TR5873 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91211AIKZ-TR5873?
ISL91211AIKZ-TR5873 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91211AIKZ-TR5873 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-TR5873?
For technical support, including ISL91211AIKZ-TR5873 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91211AIKZ-TR5873 requirements.
6.How does Aetrix verify that ISL91211AIKZ-TR5873 is sourced from the original manufacturer or authorized distributors?
All ISL91211AIKZ-TR5873 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-TR5873 meets industry standards.
7.What is the process for return or replacement of ISL91211AIKZ-TR5873?
All ISL91211AIKZ-TR5873 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91211AIKZ-TR5873, 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-TR5873 part is unused and in its original packaging.
Return procedure for ISL91211AIKZ-TR5873:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL91211AIKZ-TR5873 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
