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Renesas ISL91302BIKZT7AR5850
- Part No.:
- ISL91302BIKZT7AR5850
- Manufacturer:
- Renesas
- Package:
- 35-TFBGA
- Datasheet:
-
ISL91302BIKZT7AR5850.pdf
- Description:
- IC REG BCK ADJ 5A SGL/DL 35TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,881
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Product details
Overview
ISL91302BIKZT7AR5850 from Renesas Electronics is a dual/single-output synchronous multiphase buck PMIC with four integrated power stages and two controllers, configurable as 4+0, 3+1, or 2+2 phase outputs. It delivers up to 5A per phase, supports 2.5V–5.5V input, achieves 94.7% peak efficiency at 3.8VIN/1.8VOUT, and features R5 modulator technology for ultra-fast transient response-designed for CPU/GPU core power in mobile applications.
For engineers reviewing the ISL91302BIKZT7AR5850 datasheet, ISL91302BIKZT7AR5850 pinout, ISL91302BIKZT7AR5850 application, or ISL91302BIKZT7AR5850 equivalent, key selection criteria include its OTP-programmable 2–6MHz PWM frequency, ±0.7% system accuracy with remote sensing, independent DVS per output, integrated ADC telemetry, and 54-ball 0.4mm-pitch WLCSP package.
Technical Context
The ISL91302BIKZT7AR5850 implements Renesas' proprietary R5 modulator architecture, enabling seamless transitions between DCM and CCM modes without external compensation while maintaining loop stability. Its four integrated power stages-each with 23mΩ high-side and 9mΩ low-side MOSFETs-are dynamically assignable across two independent buck controllers.
Configuration flexibility is enforced via factory OTP settings: 4+0 (single 4-phase), 3+1 (triple + single), or 2+2 (dual 2-phase) topologies are supported. Output voltage is programmable from 0.3V to 2.0V via I²C/SPI with 1.2–2.0mV step resolution, and dynamic voltage scaling is independently enabled per rail with selectable slew rates up to 3mV/µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Factory OTP-configurable: 4+0, 3+1, or 2+2 phase; enables single-rail high-current or dual-rail independent regulation |
| Per-Phase Current | 5A continuous; supports scalable load delivery without external MOSFETs |
| Input Voltage Range | 2.5V–5.5V; compatible with single-cell Li-ion and intermediate bus supplies |
| Peak Efficiency | 94.7% at 3.8VIN/1.8VOUT; minimizes thermal load in space-constrained mobile designs |
| Output Voltage Range | 0.3V–2.0V (I²C/SPI programmable); covers core logic, GPU, and memory rails |
| System Accuracy | ±0.7% with remote voltage sensing; ensures tight regulation under PCB IR drop |
| Switching Frequency | 2MHz–6MHz (OTP programmable); balances EMI, efficiency, and component size |
| Quiescent Current | <1µA in shutdown (EN = 0V); extends battery life in always-on subsystems |
Pinout & Package
ISL91302BIKZT7AR5850 uses a 2.551mm × 3.670mm, 54-ball WLCSP package with 0.4mm pitch, optimized for ultra-thin mobile PCBs and requiring no thermal pad or exposed die attach.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PH_A, PH_B, PH_C, PH_D | Switching node outputs | Four dedicated phase outputs; assigned per configuration (e.g., PH_A/B/C/D → 4+0; PH_A/B → Buck1, PH_C/D → Buck2 in 2+2) |
| PVIN_A–PVIN_D | Power stage supply inputs | Independent input rails per phase group; decoupling required at each PVIN pin |
| PGND_A–PGND_D | Power ground terminals | Dedicated low-impedance return paths per phase; critical for current-loop integrity and EMI control |
| VOUT1 / VOUT2 | Remote output voltage sense inputs | Enable Kelvin sensing for ±0.7% accuracy; connect directly to load point, not IC pad |
| RTN1 / RTN2 | Remote ground sense inputs | Paired with VOUT1/VOUT2 to cancel PCB trace resistance error in feedback path |
| AVIN / AVIN_FILT | Analog supply and filtered reference | AVIN powers internal analog circuitry; AVIN_FILT provides clean bias for ADC and reference generation |
| MPIO0–MPIO3 | Multipurpose I/O pins | Configurable as SPI/I²C interface, DVS control, PGOOD, or ADC inputs depending on OTP pin mode |
| INT / WDOG_RST | Fault reporting and reset | INT asserts on UV/OV/OC/OT faults; WDOG_RST forces default voltage recovery on timeout |
Key Features
| Feature | Design Value |
|---|---|
| R5 modulator control | Enables <50ns load-step response and stable operation without external compensation components |
| Integrated power stages | Eliminates need for 8 external MOSFETs and gate drivers; reduces BOM count and layout area by >40% |
| Independent DVS per output | Allows simultaneous voltage scaling of CPU and GPU rails with programmable slew rate (e.g., 3mV/µs) |
| On-chip ADC telemetry | Measures voltage, current, and temperature with auxiliary ADC inputs for system-level health monitoring |
| Factory OTP configuration | Locks output topology (4+0/3+1/2+2), frequency, and protection thresholds at manufacturing-no runtime reprogramming needed |
| Comprehensive fault protection | Includes UV/OV/OC/OT detection with latch-off or hiccup mode, plus short-circuit protection on all phases |
Applications
| Smartphone Application Processor Power | FPGA Core Voltage Regulation |
|---|---|
Use Scenario: Supplying dynamic core voltage to application SoCs (e.g., Qualcomm Snapdragon, MediaTek Dimensity) during burst-mode workloads. IC Role / Device Role / Timing Role: Dual-output 3+1 configuration: 3-phase rail for CPU cluster, 1-phase rail for GPU; synchronized DVS across both rails. Use Value: Achieves 50A/µs transient response per phase, maintaining <±24mV droop during 10A load steps-critical for avoiding SoC throttling. |
Use Scenario: Delivering tightly regulated, low-noise 0.75–1.2V core voltage to high-density FPGA fabric under varying logic utilization. IC Role / Device Role / Timing Role: Single-output 4-phase configuration for maximum current density and ripple cancellation. Use Value: 94.7% peak efficiency and <±0.7% system accuracy ensure stable operation across temperature and load, reducing thermal margin requirements. |
| Industrial MPU Power Delivery | Human-Machine Interface Power |
Use Scenario: Providing robust, fault-tolerant power to ARM-based industrial MPUs (e.g., NXP i.MX8, TI Sitara) operating in extended temperature (-40°C to +85°C). IC Role / Device Role / Timing Role: Dual-output 2+2 configuration: one rail for MPU core, second for DDR memory interface; independent sequencing and monitoring. Use Value: Integrated thermal warning (85°C alert) and shutdown (140°C) with 60°C hysteresis prevents field failures in unventilated enclosures. |
Use Scenario: Powering touch controllers, display drivers, and sensor hubs in compact HMI panels where board area and thermal dissipation are constrained. IC Role / Device Role / Timing Role: Single-output 2-phase configuration balancing efficiency and solution size; leverages small 2.55×3.67mm WLCSP footprint. Use Value: Ultra-low quiescent current (<1µA shutdown) and 0.4mm-pitch WLCSP enable battery-powered, always-on UI responsiveness with multi-year shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91301B | 42-ball 6×7 WLCSP; quad-output (1+1+1+1); 4A per phase; no 4+0 mode | Targeted at systems requiring four independent low-current rails (e.g., I/O, PLL, analog, core), not high-current single-rail needs | Select ISL91301B only when discrete rail isolation and lower per-phase current (4A vs. 5A) are acceptable trade-offs for reduced pin count |
| ISL91211B | 54-ball WLCSP same footprint; quad-output (1+1+1+1); 5A per phase; lacks R5 modulator and DVS flexibility | Suited for fixed-voltage, multi-rail systems (e.g., sensor fusion modules) without dynamic scaling or fast transients | Choose ISL91211B if topology requires four independent rails and R5's ultra-fast transient response is unnecessary |
Compared with ISL91301B and ISL91211B, the ISL91302BIKZT7AR5850 uniquely supports 4+0 phase configuration with 5A per phase and R5 modulator-driven transient performance-making it the only option among the three for high-current, single-rail mobile processor core power with dynamic voltage scaling.
Availability
ISL91302BIKZT7AR5850 is available at Aetrix Electronics and suitable for smartphone application processor power, FPGA core voltage regulation, and industrial MPU power delivery requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL91302BIKZT7AR5850 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 trusted embedded design innovation, with expertise in power management, microcontrollers, and analog solutions for automotive, industrial, and consumer markets.
The ISL91302B product line was designed specifically for high-efficiency, multi-phase core power delivery in space-constrained mobile and portable electronics-emphasizing integration, configurability, and transient performance over discrete controller+driver solutions.
FAQ
What output configurations does the ISL91302BIKZT7AR5850 support?
The ISL91302BIKZT7AR5850 supports three factory OTP-configured output topologies: 4+0 (single 4-phase output), 3+1 (dual output: 3-phase + 1-phase), and 2+2 (dual 2-phase outputs). Each configuration assigns its four integrated power stages (PH_A–PH_D) and two controllers accordingly-enabling flexible adaptation to CPU/GPU, MPU/DDR, or FPGA core/memory power requirements without hardware changes.
How does the R5 modulator in the ISL91302BIKZT7AR5850 improve transient response?
The R5 modulator in the ISL91302BIKZT7AR5850 delivers ultra-fast transient response-up to 50A/µs per phase-by eliminating traditional voltage-mode or current-mode compensation networks. It enables seamless DCM/CCM transitions and maintains loop stability across load steps, achieving <±24mV output deviation during 10A transients without external compensation components.
What is the role of VOUT1, VOUT2, RTN1, and RTN2 pins on the ISL91302BIKZT7AR5850?
VOUT1 and VOUT2 are remote output voltage sense inputs; RTN1 and RTN2 are corresponding remote ground sense inputs. Together, they form Kelvin-sense pairs that measure voltage directly at the load point-canceling PCB trace resistance errors and enabling ±0.7% system accuracy. These pins must be routed separately from power pads to maintain measurement integrity.
Can the ISL91302BIKZT7AR5850 operate with different switching frequencies?
Yes-the ISL91302BIKZT7AR5850 supports OTP-programmable PWM frequencies from 2MHz to 6MHz. This range allows designers to optimize for EMI suppression (higher frequency), efficiency (mid-band), or inductor size (lower frequency), with 4MHz as the typical default. Frequency selection is locked at factory programming and cannot be changed in-system.
Does the ISL91302BIKZT7AR5850 integrate MOSFETs, and what are their ON-resistance values?
Yes-the ISL91302BIKZT7AR5850 integrates all high-side and low-side MOSFETs. At PVIN = 3.7V and 300mA test current, the typical high-side rDS(ON) is 23mΩ and low-side rDS(ON) is 9mΩ. These low resistances contribute to 94.7% peak efficiency and reduce thermal stress compared to discrete driver+MOSFET solutions.
ISL91302BIKZT7AR5850 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 35-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1 or 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.7V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 5A
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-TFBGA (4.7x6.3)
ISL91302BIKZT7AR5850 FAQ
1.How can I place an order for ISL91302BIKZT7AR5850 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91302BIKZT7AR5850 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 ISL91302BIKZT7AR5850 reliable?
The price and inventory of ISL91302BIKZT7AR5850 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91302BIKZT7AR5850 is usually 5 days.
3.What payment methods are accepted for ISL91302BIKZT7AR5850?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91302BIKZT7AR5850 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91302BIKZT7AR5850?
ISL91302BIKZT7AR5850 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91302BIKZT7AR5850 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 ISL91302BIKZT7AR5850?
For technical support, including ISL91302BIKZT7AR5850 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91302BIKZT7AR5850 requirements.
6.How does Aetrix verify that ISL91302BIKZT7AR5850 is sourced from the original manufacturer or authorized distributors?
All ISL91302BIKZT7AR5850 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 ISL91302BIKZT7AR5850 meets industry standards.
7.What is the process for return or replacement of ISL91302BIKZT7AR5850?
All ISL91302BIKZT7AR5850 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91302BIKZT7AR5850, 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 ISL91302BIKZT7AR5850 part is unused and in its original packaging.
Return procedure for ISL91302BIKZT7AR5850:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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