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Renesas ISL8014AIRZ
- Part No.:
- ISL8014AIRZ
- Manufacturer:
- Renesas
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL8014AIRZ.pdf
- Description:
- IC REG BUCK ADJ 4A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:529
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Product details
Overview
ISL8014AIRZ from Renesas Electronics is a monolithic synchronous buck regulator delivering up to 4A continuous output current from a 2.8V–5.5V input, featuring 1MHz PWM switching, 97% peak efficiency, 0.8V reference voltage, and integrated P/N-channel MOSFETs with ≤75mΩ ON-resistance. It powers microcontrollers, FPGAs, and DSPs in space-constrained DC/DC POL modules.
For engineers reviewing the ISL8014AIRZ datasheet, ISL8014AIRZ pinout, ISL8014AIRZ application, or ISL8014AIRZ equivalent, key selection criteria include its 1ms power-good delay, 35µA quiescent current in PFM mode, 100% duty-cycle operation for ultra-low dropout, and external synchronization support up to 4MHz.
Technical Context
The ISL8014AIRZ employs current-mode PWM control with internal slope compensation (237mV/µs) and a transconductance error amplifier (20µA/V), enabling fast transient response and stable loop behavior across 0–4A load range. Its dual-mode operation-selectable forced PWM or pulse-skipping PFM-optimizes efficiency versus noise trade-offs at light loads.
Protection architecture includes hiccup-mode overcurrent limiting (17-cycle fault counter), thermal shutdown at 140°C with 25°C hysteresis, output overvoltage detection (92% nominal threshold), and soft-stop output discharge via internal 100Ω switch during shutdown. The 1ms PG timer provides deterministic power sequencing feedback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4A continuous - supports high-current digital loads without external MOSFETs |
| Input Voltage Range | 2.8V to 5.5V - compatible with single-cell Li-ion, 3.3V, and 5V rails |
| Reference Voltage | 0.8V ±10mV - enables precise adjustable output down to 0.8V with resistor divider |
| Quiescent Current | 35µA in PFM mode - extends battery life in always-on portable instruments |
| Switching Frequency | 1MHz typical (0.8–1.2MHz) - allows compact 1.5µH inductors and 2×22µF ceramic output caps |
| Power-Good Delay | 1ms rising-edge delay - provides reliable system reset timing for µC/FPGA initialization |
| Duty Cycle Max | 100% - achieves <400mV dropout at 4A, critical for low-VIN battery end-of-life operation |
Pinout & Package
ISL8014AIRZ is housed in a RoHS-compliant, thermally enhanced 16-lead 4mm × 4mm QFN package with exposed pad (PKG DWG L16.4x4). The exposed pad must be soldered to SGND for optimal thermal performance (θJC = 3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1,2) | Input power supply | Accepts 2.8–5.5V; requires local 10µF ceramic decoupling to PGND |
| VDD (Pin 3) | Analog supply rail | Internally tied to VIN; powers bandgap and error amplifier circuitry |
| EN (Pin 5) | Enable control input | Active-high logic; initiates soft-start and discharges output on low assertion |
| SYNCH (Pin 4) | Mode selection/sync input | Logic high = forced PWM; logic low = PFM; external falling edge = sync up to 4MHz |
| LX (Pins 14,15) | Switch node | Connects to inductor; supports 100% duty cycle and fast switching transitions |
| PGND (Pins 11,12) | Power ground return | Low-impedance path for high di/dt switching currents; separate from SGND |
| SGND (Pins 9,10) | Signal ground reference | Reference for VFB, PG, EN, SYNCH; exposed pad must connect here |
| VFB (Pin 8) | Feedback input | Monitors output via resistor divider; 0.1µA bias current enables high-impedance scaling |
| PG (Pin 7) | Power-good open-drain output | Asserts after 1ms delay when VOUT reaches 92% of regulation; sinks 1mA |
| NC (Pins 6,13,16) | No-connect terminals | Not internally bonded; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-MOSFETs | ≤75mΩ combined ON-resistance at 5V VIN - eliminates external power switches and reduces BOM count |
| Selectably forced PWM or PFM | SYNCH pin configures noise-sensitive (PWM) or ultra-low-IQ (PFM) operation - no external components required |
| Pre-biased output start-up | Soft-start operates in SKIP mode during power-on - prevents reverse current into pre-charged outputs |
| Internal soft-start ramp | Fixed 1ms duration - limits inrush current and avoids overshoot on FPGA/µP power rails |
| Output capacitor discharge | Internal 100Ω switch actively discharges VOUT during shutdown - meets safety requirements for hot-swap systems |
| Thermal and overcurrent protection | Hiccup-mode restart after 4 soft-start cycles - sustains reliability under sustained overload without latch-off |
Applications
| DC/DC POL Modules | µC/µP and FPGA Power |
|---|---|
|
Use Scenario: Point-of-load conversion in compact telecom line cards requiring high current density and low thermal footprint. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 1.2V/1.8V/2.5V at up to 4A with tight regulation (<±3%) across temperature and line. Use Value: 4mm×4mm QFN package and integrated MOSFETs reduce total solution area to <0.4in² while maintaining 97% efficiency at full load. |
Use Scenario: Core voltage supply for ARM-based microcontrollers and Xilinx Artix-7 FPGAs in portable test equipment. IC Role / Device Role / Timing Role: Main power stage with 1ms PG signal synchronized to processor reset timing and soft-start matched to clock domain initialization. Use Value: 35µA PFM quiescent current extends battery runtime; 100% duty cycle maintains regulation down to 2.8V input during Li-ion discharge. |
| Li-ion Battery Powered Devices | SFP Module Power |
|
Use Scenario: Power management in handheld barcode scanners operating from single-cell Li-ion (2.8–4.2V). IC Role / Device Role / Timing Role: Single-stage buck converter generating 3.3V for interface ICs and sensors, with shutdown current <0.2µA. Use Value: Ultra-low shutdown current and soft-discharge prevent battery drain during standby; PFM mode minimizes light-load losses. |
Use Scenario: Compact 1.8V/2.5V supply in SFP+ optical transceivers where board space and EMI are tightly constrained. IC Role / Device Role / Timing Role: High-frequency (1MHz) regulator enabling small 1.5µH inductors and minimizing conducted emissions via SYNC phase-shifting. Use Value: External synchronization up to 4MHz allows interleaving with other converters to suppress beat frequencies and reduce input ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8013AIRZ | 3A output rating, identical pinout and feature set except lower current capability and slightly higher RDS(ON) | Suitable for lower-power µP or sensor nodes where 4A headroom is unnecessary | Select ISL8013AIRZ when load current remains ≤3A and PCB layout reuse is prioritized |
| TPS54340DDAR | 3.5A output, 3.5–42V input range, external MOSFETs, no integrated P-MOSFET, 500kHz max frequency | Better suited for industrial 12V/24V input systems but requires larger magnetics and more components | Choose TPS54340DDAR only for wide-input industrial applications incompatible with ISL8014AIRZ's 5.5V max VIN |
Compared with ISL8014AIRZ, ISL8013AIRZ offers direct pin-compatible downsizing for 3A designs, while TPS54340DDAR trades integration and frequency for high-input-voltage robustness - neither provides identical 4A/1MHz/low-IQ performance in a 4mm×4mm QFN.
Availability
ISL8014AIRZ is available at Aetrix Electronics and suitable for DC/DC POL modules, µC/FPGA power supplies, and Li-ion powered portable instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8014AIRZ 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 management, and timing solutions for automotive, industrial, and computing markets.
The ISL8014AIRZ belongs to Renesas' ISL801xx family of high-efficiency synchronous buck regulators designed specifically for space-constrained, battery-sensitive applications including portable instrumentation and communications infrastructure.
FAQ
What is the maximum output current capability of the ISL8014AIRZ?
The ISL8014AIRZ delivers up to 4A continuous output current across the full operating temperature range (-40°C to +85°C) with proper thermal design. Its internal P- and N-channel MOSFETs have typical ON-resistances of 50mΩ each at 5V input, enabling high efficiency and low dropout. Peak current limit is specified at 4.9–7.1A, supporting transient surges without foldback.
Does the ISL8014AIRZ support pre-biased output start-up?
Yes, the ISL8014AIRZ supports pre-biased output start-up through its SKIP-mode soft-start implementation. During power-on, the controller operates in pulse-skipping mode regardless of initial VOUT level, preventing reverse current flow into a pre-charged output capacitor. This ensures safe, controlled ramp-up even when the output is already biased at 1V or higher.
How does the ISL8014AIRZ handle thermal overload conditions?
The ISL8014AIRZ incorporates thermal shutdown that activates at +140°C junction temperature, halting switching and discharging the output. Once junction temperature falls to +115°C (25°C hysteresis), the device automatically resumes operation by executing a full 1ms soft-start sequence. This protects against sustained overheating while enabling autonomous recovery without external intervention.
What is the purpose of the exposed thermal pad on the ISL8014AIRZ QFN package?
The exposed pad on the ISL8014AIRZ's 4mm×4mm QFN package must be soldered directly to the SGND plane using multiple thermal vias. It serves two critical functions: (1) electrical connection to signal ground for stable reference integrity, and (2) primary thermal conduction path, achieving θJC = 3°C/W. Failure to connect it compromises both EMI performance and thermal derating.
Can the ISL8014AIRZ be synchronized to an external clock source?
Yes, the ISL8014AIRZ accepts external synchronization via the SYNCH pin, triggered on the falling edge of an input signal. It supports synchronization frequencies up to 4MHz, enabling phase-shifted interleaving with other converters to reduce input/output ripple and eliminate beat frequencies. Minimum LX on-time remains 140ns across all sync frequencies.
ISL8014AIRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 4A
- 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)
ISL8014AIRZ FAQ
1.How can I place an order for ISL8014AIRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8014AIRZ 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 ISL8014AIRZ reliable?
The price and inventory of ISL8014AIRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8014AIRZ is usually 5 days.
3.What payment methods are accepted for ISL8014AIRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8014AIRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8014AIRZ?
ISL8014AIRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8014AIRZ 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 ISL8014AIRZ?
For technical support, including ISL8014AIRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8014AIRZ requirements.
6.How does Aetrix verify that ISL8014AIRZ is sourced from the original manufacturer or authorized distributors?
All ISL8014AIRZ 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 ISL8014AIRZ meets industry standards.
7.What is the process for return or replacement of ISL8014AIRZ?
All ISL8014AIRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL8014AIRZ, 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 ISL8014AIRZ part is unused and in its original packaging.
Return procedure for ISL8014AIRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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