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Renesas ISL8013IRZ
- Part No.:
- ISL8013IRZ
- Manufacturer:
- Renesas
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL8013IRZ.pdf
- Description:
- IC REG BUCK ADJ 3A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,301
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Product details
Overview
ISL8013IRZ from Intersil is a monolithic synchronous buck regulator delivering up to 3A continuous output current from a 2.7V–5.5V input, featuring 1MHz PWM switching, internal P/N-channel MOSFETs (50mΩ typical RDS(on)), 35µA quiescent current in PFM mode, and 100% duty-cycle operation enabling <300mV dropout at 3A. It serves as a high-efficiency point-of-load (POL) DC/DC converter for FPGA, µP, and Li-ion battery-powered portable instruments.
For engineers reviewing the ISL8013IRZ datasheet, ISL8013IRZ pinout, ISL8013IRZ application, or ISL8013IRZ equivalent, key selection criteria include its 16-lead 4×4 QFN package with exposed thermal pad, dual-mode (PWM/PFM) operation, integrated soft-start and power-good timing, and hiccup-mode overcurrent protection-critical for stable low-noise power delivery in space-constrained embedded systems.
Technical Context
The ISL8013IRZ employs current-mode PWM control with slope compensation for fast transient response and loop stability, using an internal transconductance error amplifier (20µA/V) and fixed 1MHz oscillator. Its architecture supports both forced continuous conduction mode (CCM) and discontinuous conduction mode (DCM) via SYNCH pin configuration.
It integrates dual MOSFETs with matched 50mΩ typical RDS(on) at VIN = 5V, enables external synchronization up to 4MHz via negative-edge-triggered SYNCH input, and implements zero-cross detection for skip-mode entry after eight consecutive inductor-current zero crossings-ensuring optimized light-load efficiency without compromising regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 3A continuous - supports high-current digital loads like FPGAs without external pass devices. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V system rails. |
| Switching Frequency | 1MHz (PWM) - enables use of compact 1.5µH inductors and 2×22µF ceramic output capacitors. |
| Quiescent Current | 35µA in PFM mode - extends battery life in always-on portable instrumentation. |
| Reference Voltage | 0.8V ±2% - sets output voltage accuracy; combined with 3% total output regulation over line/load/temp. |
| Duty Cycle Range | 0–100% - allows ultra-low dropout operation (e.g., 3.0VIN → 2.8VOUT) during battery sag. |
| Thermal Shutdown | 140°C with 25°C hysteresis - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
ISL8013IRZ is housed in a RoHS-compliant, lead-free 16-lead 4mm × 4mm QFN package with exposed thermal pad (PKG DWG # L16.4x4). The exposed pad must be soldered to SGND for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 VIN | Power input | Primary input supply connection; requires 10µF ceramic bypass to PGND. |
| 3 VDD | Analog supply rail | Bias for internal bandgap and error amplifier; must connect directly to VIN. |
| 4 SYNCH | Mode/sync control | Logic-high = forced PWM; logic-low = PFM; external clock input (≤4MHz, negative edge). |
| 5 EN | Enable control | Active-high logic input; drives internal discharge switch when low to safely collapse output. |
| 7 PG | Power-good indicator | Open-drain output with 1ms delay after regulation achieved; asserts high when VOUT ≥92% of target. |
| 8 VFB | Feedback node | Connects to resistor divider for adjustable output; internally referenced to 0.8V. |
| 13–15 LX | Switch node | Drives external inductor; connects to source of internal P-MOSFET and drain of N-MOSFET. |
| 11, 12 PGND | Power ground | Return path for high-current switching loops; separate from signal ground to reduce noise coupling. |
| 9, 10 SGND | Signal ground | Reference for VFB, EN, SYNCH, and PG; must tie to exposed pad for stability. |
| 6, 16 NC | No connect | Unbonded pins; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N MOSFETs | 50mΩ typical RDS(on) each at VIN = 5V - eliminates external switches and reduces BOM count by ≥4 components. |
| 1ms Power-Good Timer | Guaranteed 1ms delay before PG assertion - ensures reliable sequencing in multi-rail systems with µP/FPGA boot requirements. |
| Pre-biased Output Start-Up | Supports start-up into pre-charged output (e.g., hot-swap or backup supplies) without reverse current flow. |
| Soft-Stop Output Discharge | Internal 100Ω switch discharges VOUT during shutdown - prevents floating outputs and enables safe power-down in battery systems. |
| Hiccup-Mode Overcurrent Protection | 17-cycle fault counter triggers 4-soft-start-cycle recovery delay - limits average power dissipation during sustained short circuits. |
Applications
| DC/DC POL Modules | µC/µP, FPGA and DSP Power |
|---|---|
Use Scenario: Compact, board-mounted DC/DC modules for telecom and networking equipment requiring tight regulation and minimal footprint. IC Role / Device Role / Timing Role: Primary synchronous buck controller providing regulated 1.2V/1.8V/2.5V rails from 3.3V or 5V intermediate bus. Use Value: 97% peak efficiency and 1MHz operation enable sub-0.4in² module area while maintaining <±3% output accuracy across temperature. |
Use Scenario: Core and I/O power for microcontrollers, FPGAs, and digital signal processors in portable test equipment. IC Role / Device Role / Timing Role: High-current POL regulator delivering 3A at 1.8V with fast load-transient response (<5% deviation) for burst-mode processing. Use Value: PFM mode reduces no-load quiescent current to 35µA, extending battery runtime in handheld analyzers and data loggers. |
| Li-ion Battery Powered Devices | Small Form Factor (SFP) Modules |
Use Scenario: Power management in battery-operated portable instruments such as bar code readers and handheld meters. IC Role / Device Role / Timing Role: Main system regulator converting single-cell Li-ion (2.7–4.2V) to stable 3.3V or 1.2V rails with 100% duty-cycle support. Use Value: <300mV dropout at 3A enables full utilization of battery capacity down to 2.7V, maximizing usable runtime. |
Use Scenario: Space-constrained optical transceiver modules requiring ultra-small, high-reliability DC/DC conversion. IC Role / Device Role / Timing Role: Secondary buck stage generating low-noise 2.5V analog supply from 3.3V host rail in SFP+ cages. Use Value: SYNC input allows phase-shifting multiple ISL8013IRZ units to suppress beat frequencies and reduce EMI in dense pluggable modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8013A | Direct replacement with improved thermal performance and tighter reference voltage tolerance (0.8V ±1%). Not recommended for new designs per datasheet, but functionally superseded. | Same pinout and feature set; preferred for new designs requiring enhanced output accuracy and thermal margin. | Select ISL8013A if designing new products and sourcing long-term availability is prioritized. |
| TPS54331DR | 3A buck with 3.5–28V input, 570kHz fixed frequency, external compensation, and no PFM mode - higher input range but less efficient at low VIN. | Better suited for industrial 12V/24V intermediate bus applications; lacks pre-biased start-up and soft-stop discharge. | Choose TPS54331DR only when input exceeds 5.5V or when external compensation flexibility is required. |
Compared with ISL8013IRZ, ISL8013A offers tighter reference accuracy and improved thermal robustness for new designs, while TPS54331DR trades low-VIN efficiency and integrated features for wider input range and external loop tuning-making ISL8013IRZ optimal for compact, battery-centric 2.7–5.5V POL applications.
Availability
ISL8013IRZ is available at Aetrix Electronics and suitable for DC/DC POL modules, µP/FPGA power delivery, and Li-ion battery-powered portable instrumentation requiring stable component supply and long-lifecycle support.
Supply support for ISL8013IRZ 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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.
The ISL8013IRZ belongs to Intersil's high-efficiency synchronous buck regulator product line, designed specifically for low-voltage, high-current point-of-load power delivery in battery-powered and space-constrained embedded systems.
FAQ
What is the maximum output current capability of the ISL8013IRZ?
The ISL8013IRZ delivers up to 3A continuous output current under recommended operating conditions (TA = –40°C to +85°C, VIN = 2.7V–5.5V). Its internal P/N-channel MOSFETs (50mΩ typical RDS(on)) and thermal design support this rating in the 4×4 QFN package with proper PCB copper area and vias to the exposed pad. Peak switch current is rated at 4.8A, allowing headroom for transient loads.
Does the ISL8013IRZ support pre-biased output start-up?
Yes, the ISL8013IRZ supports pre-biased output start-up. During soft-start, it operates in SKIP mode and disables reverse current flow, enabling safe turn-on into an already charged output capacitor-critical for hot-swap and redundant power applications. This behavior is confirmed in the Theory of Operation section of the FN6309 datasheet.
How does the ISL8013IRZ handle overcurrent and short-circuit conditions?
The ISL8013IRZ uses peak current limiting with hiccup-mode recovery: upon detecting 17 consecutive overcurrent events (via CSA monitoring), it shuts down and attempts restart after four soft-start cycles. For short circuits, the SCP comparator detects VFB <0.2V and reduces switching frequency to 1/3 normal rate to limit power dissipation-both mechanisms protect the ISL8013IRZ and external components without requiring external circuitry.
What is the purpose of the exposed thermal pad on the ISL8013IRZ package?
The exposed pad on the ISL8013IRZ's 4×4 QFN package must be soldered to the SGND plane to ensure both electrical stability and thermal performance. It provides a low-thermal-resistance path (θJC = 3°C/W) from the die to the PCB, enabling reliable 3A operation at ambient temperatures up to +85°C. Datasheet FN6309 specifies connecting it to SGND-not PGND-and recommends multiple thermal vias.
Can the ISL8013IRZ be synchronized to an external clock?
Yes, the ISL8013IRZ supports external synchronization up to 4MHz via the SYNCH pin, triggered on the falling edge. This allows phase-shifting multiple converters to reduce input/output ripple and eliminate beat frequencies in multi-rail systems. Minimum LX on-time is 140ns, so the external clock period must exceed this limit to maintain stable operation.
ISL8013IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- 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):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
ISL8013IRZ FAQ
1.How can I place an order for ISL8013IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8013IRZ 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 ISL8013IRZ reliable?
The price and inventory of ISL8013IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8013IRZ is usually 5 days.
3.What payment methods are accepted for ISL8013IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8013IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8013IRZ?
ISL8013IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8013IRZ 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 ISL8013IRZ?
For technical support, including ISL8013IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8013IRZ requirements.
6.How does Aetrix verify that ISL8013IRZ is sourced from the original manufacturer or authorized distributors?
All ISL8013IRZ 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 ISL8013IRZ meets industry standards.
7.What is the process for return or replacement of ISL8013IRZ?
All ISL8013IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL8013IRZ, 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 ISL8013IRZ part is unused and in its original packaging.
Return procedure for ISL8013IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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