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Renesas ISL8016IRAJZ-T7A
- Part No.:
- ISL8016IRAJZ-T7A
- Manufacturer:
- Renesas
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
ISL8016IRAJZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 6A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,944
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Product details
Overview
ISL8016IRAJZ-T7A from Renesas (formerly Intersil) is an adjustable-output, 6A synchronous buck regulator with monolithic P/N-channel MOSFETs, operating from 2.7V–5.5V input and delivering 0.6V–VIN output. It features 1% reference accuracy, 97% peak efficiency at 6A, 1MHz default switching frequency, and integrated reverse current protection. It serves as a high-density POL solution for FPGA core rails in space-constrained industrial embedded systems.
For engineers reviewing the ISL8016IRAJZ-T7A datasheet, ISL8016IRAJZ-T7A pinout, ISL8016IRAJZ-T7A application, or ISL8016IRAJZ-T7A equivalent, key selection criteria include adjustable current limit (6A/4A/2A), pre-bias start capability, 100% duty-cycle operation for <200mV dropout, and phase-interleaving support for >6A parallel configurations - all validated in the FN7616 Rev 1.00 datasheet.
Technical Context
The ISL8016IRAJZ-T7A uses peak current-mode control with slope compensation (360mV/Ts) and transconductance error amplifier (100µA/V internal, 200µA/V external) to ensure loop stability across wide load and line variations. Its dual-mode operation - forced PWM (SYNCIN = HI) or PFM skip mode (SYNCIN = LO) - enables dynamic trade-off between low-noise performance and light-load efficiency.
It integrates 45mΩ (P-FET, VIN=5V) and 35mΩ (N-FET, VIN=5V) MOSFETs, supports external synchronization up to 4MHz with master-slave phase shifting, and implements hiccup-mode short-circuit protection triggered after 17 consecutive overcurrent events. Thermal shutdown activates at 150°C with 25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - supports single-chip core power for mid-range FPGAs without external current sharing. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), 3.3V, and 5V intermediate bus architectures. |
| Output Voltage Range | 0.6V to VIN - enables precise core voltage tuning (e.g., 0.85V–1.2V for ARM Cortex-A series) via external resistor divider. |
| Reference Accuracy | ±1% over temperature/load/line - ensures tight regulation margin for sensitive digital loads without post-regulation trimming. |
| Quiescent Current | 70µA in PFM no-load - extends battery runtime in portable instrumentation with intermittent processing bursts. |
| Switching Frequency | Adjustable 500kHz–4MHz (default 1MHz) - allows optimization of inductor size vs. EMI in noise-sensitive test equipment. |
| Thermal Resistance | θJA = 42°C/W (3×4 QFN) - enables 6A operation at +85°C ambient with minimal PCB copper area. |
Pinout & Package
ISL8016IRAJZ-T7A is housed in a 20-lead, 3mm × 4mm, RoHS-compliant QFN package with exposed thermal pad (L20.3x4). The EPAD must be soldered to SGND for electrical integrity and optimal thermal performance (θJC = 5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19, 20 | PGND | Power ground return for high-current switch node - requires low-inductance connection to input/output capacitors. |
| 2, 3, 4 | PHASE | Switching node - connects directly to inductor; handles 6A pulsed current and fast dv/dt transitions. |
| 5, 6, 7 | VIN | Main input supply - requires two 22µF ceramic capacitors placed near pins to minimize high-frequency ripple. |
| 8 | PG | Open-drain power-good flag - signals valid regulation after 1ms delay; requires 10kΩ–100kΩ pull-up to VIN. |
| 10 | SYNCIN | Mode select/sync input - logic high = forced PWM; logic low = PFM; external clock = synchronization source. |
| 11 | EN | Enable control - active-high; internal 1MΩ pull-down prevents floating; drives output discharge when low. |
| 12 | FS | Frequency set - resistor to SGND programs 500kHz–4MHz; tied to VIN for 1MHz internal compensation. |
| 14 | ISET | Current limit configuration - floating = 6A, VIN = 4A, SGND = 2A - sets both peak and skip thresholds. |
| 15 | SS | Soft-start timing - grounded = 1ms internal ramp; capacitor to SGND adjusts rise time (≤33nF). |
| 16, 17 | COMP / VFB | Compensation node / feedback input - VFB senses output divider; COMP used only with external FS resistor. |
| 18 | SGND | Signal ground - separate from PGND; reference for VFB, ISET, VSET, EN, SYNCIN, and internal analog blocks. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N MOSFETs | Reduces BOM count by eliminating external switches; 45mΩ/35mΩ RDS(on) at 5V enables >95% efficiency at 6A. |
| Pre-bias start capability | Allows safe startup into pre-charged output (e.g., hot-swap or backup rail scenarios) without damaging downstream ICs. |
| 100% duty-cycle operation | Supports ultra-low dropout (<200mV at 6A) - critical for maintaining regulation during brown-out on 3.3V input. |
| Phase interleaving support | Enables two ISL8016IRAJZ-T7A devices to share 12A load with reduced input/output ripple and EMI. |
| ±10% output margining | VSET pin configures -10%/0%/+10% output offset - simplifies system-level voltage margin testing without hardware change. |
Applications
| FPGA Core Power Supply | Portable Test Instrumentation |
|---|---|
|
Use Scenario: Powering Xilinx Artix-7 or Intel Cyclone V FPGA core rails requiring 1.0V @ 4–6A with tight transient response. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering dynamically scaled core voltage with soft-start and PG monitoring. Use Value: 1% reference accuracy and fast current-mode control maintain ±3% output regulation during 3A/µs load steps. |
Use Scenario: Battery-powered handheld oscilloscope with dual 1.2V/1.8V analog/digital rails and 8-hour runtime target. IC Role / Device Role / Timing Role: High-efficiency POL converter operating in PFM mode during standby, switching to PWM under measurement burst load. Use Value: 70µA quiescent current in PFM extends battery life; 100% duty-cycle maintains regulation down to 2.8V input. |
| DC/DC Plug-in Module | Industrial Embedded Controller |
|
Use Scenario: Compact 36mm² plug-in DC/DC module for router line cards needing 1.5V @ 6A from 3.3V intermediate bus. IC Role / Device Role / Timing Role: Monolithic buck IC enabling minimal footprint design with no external MOSFETs or gate drivers. Use Value: 3×4 QFN package and integrated power stage reduce total solution area to <0.15in² (≈97mm²). |
Use Scenario: DIN-rail mounted PLC CPU board requiring robust 1.2V core supply with overtemperature and short-circuit protection. IC Role / Device Role / Timing Role: Fault-tolerant buck regulator with hiccup-mode OCP, thermal shutdown (150°C), and reverse current blocking. Use Value: Automatic recovery from overload and 25°C thermal hysteresis prevent latch-up in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS546B24A | 6A, 4.5–18V input, fixed 1.2V output; PMBus interface; 0.5% ref accuracy; larger 5×6 QFN. | Requires digital configuration; suited for systems needing telemetry and dynamic voltage scaling. | Choose TPS546B24A if PMBus monitoring, tighter reference, or higher input voltage (>5.5V) is required. |
| MP2315GJ-Z | 6A, 4.5–28V input, adjustable 0.8–15V output; 1.2MHz fixed freq; smaller 3×3 QFN; no PFM mode. | Lacks pre-bias start, sync, and margining; optimized for cost-sensitive industrial supplies with stable input. | Choose MP2315GJ-Z for simpler, lower-cost designs where 2.7–5.5V input range and PFM are not needed. |
Compared with TPS546B24A and MP2315GJ-Z, the ISL8016IRAJZ-T7A uniquely balances ultra-low input voltage support (2.7V), PFM/PWM dual-mode operation, and comprehensive fault protection - making it optimal for battery-fed and space-constrained applications where flexibility and robustness are prioritized over digital control or extended input range.
Availability
ISL8016IRAJZ-T7A is available at Aetrix Electronics and suitable for FPGA power delivery, portable instrumentation, and industrial embedded controller designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8016IRAJZ-T7A 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 acquired Intersil in 2017 and continues to manufacture and support its high-performance analog power portfolio, including precision DC/DC regulators.
The ISL8016IRAJZ-T7A belongs to Renesas' monolithic synchronous buck regulator product line, designed specifically for high-current, low-voltage POL applications in battery-powered and thermally constrained systems.
FAQ
What is the maximum output current capability of the ISL8016IRAJZ-T7A?
The ISL8016IRAJZ-T7A delivers up to 6A continuous output current when properly heatsinked on a 4-layer PCB with thermal vias under the EPAD. Its 100% duty-cycle operation ensures regulation even at low input voltages, and paralleling two ISL8016IRAJZ-T7A units with phase interleaving enables >12A output while reducing input/output ripple.
Does the ISL8016IRAJZ-T7A support pre-bias start functionality?
Yes, the ISL8016IRAJZ-T7A explicitly supports startup into a pre-biased output - a critical feature for hot-swap and redundant power systems. This behavior is confirmed in the FN7616 datasheet Section "Start-up with Pre-Biased Output" and validated in Figure 24 (Soft-Start with Pre-Biased 1V).
How is the switching frequency configured on the ISL8016IRAJZ-T7A?
The ISL8016IRAJZ-T7A switching frequency is set via the FS pin: tying FS to VIN selects the default 1MHz internal compensation; connecting a resistor from FS to SGND programs frequencies from 500kHz to 4MHz using RT = (220 × 10³)/fOSC − 14 kΩ (Equation 1, FN7616 p.16).
What protection features does the ISL8016IRAJZ-T7A include?
The ISL8016IRAJZ-T7A integrates peak current limiting, hiccup-mode short-circuit protection (triggered after 17 consecutive OC events), overtemperature shutdown (150°C), reverse current blocking, undervoltage lockout (2.7V rising threshold), and soft-stop output discharge during disable - all documented in Sections 3 and 7 of FN7616.
Can the ISL8016IRAJZ-T7A be synchronized to an external clock?
Yes, the ISL8016IRAJZ-T7A accepts external synchronization via the SYNCIN pin, supporting input frequencies from 500kHz to 4MHz. The rising edge of SYNCIN triggers the PHASE node, and SYNCOUT provides a 250µA current pulse to synchronize slave devices - enabling multi-phase operation with controlled phase shift.
ISL8016IRAJZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 525kHz ~ 3.9MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
ISL8016IRAJZ-T7A FAQ
1.How can I place an order for ISL8016IRAJZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8016IRAJZ-T7A 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 ISL8016IRAJZ-T7A reliable?
The price and inventory of ISL8016IRAJZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8016IRAJZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8016IRAJZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8016IRAJZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8016IRAJZ-T7A?
ISL8016IRAJZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8016IRAJZ-T7A 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 ISL8016IRAJZ-T7A?
For technical support, including ISL8016IRAJZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8016IRAJZ-T7A requirements.
6.How does Aetrix verify that ISL8016IRAJZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8016IRAJZ-T7A 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 ISL8016IRAJZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8016IRAJZ-T7A?
All ISL8016IRAJZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8016IRAJZ-T7A, 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 ISL8016IRAJZ-T7A part is unused and in its original packaging.
Return procedure for ISL8016IRAJZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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