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Renesas ISL8014AIRZ-T7A
- Part No.:
- ISL8014AIRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL8014AIRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 4A 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
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Product details
Overview
ISL8014AIRZ-T7A 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, 35µA quiescent current in PFM mode, 100% duty-cycle operation for <400mV dropout at 4A, and integrated high- and low-side MOSFETs with ~50mΩ RDS(on) each. It powers µC/FPGA core rails in portable instrumentation and SFP modules.
For engineers reviewing the ISL8014AIRZ-T7A datasheet, ISL8014AIRZ-T7A pinout, ISL8014AIRZ-T7A application, or ISL8014AIRZ-T7A equivalent, key selection criteria include light-load efficiency mode selection (PFM vs forced PWM), power-good timing (1ms delay), thermal shutdown threshold (+140°C), and synchronization capability up to 4MHz with negative-edge trigger.
Technical Context
The ISL8014AIRZ-T7A employs current-mode PWM control with internal slope compensation (237mV/µs) and a transconductance error amplifier (20µA/V) for fast transient response and stable loop behavior across line, load, and temperature. Its dual-mode operation-forced continuous PWM or discontinuous PFM-is selected via the SYNCH pin, enabling optimization between low-noise performance and ultra-low quiescent current.
Overcurrent protection uses peak-current limiting with 17-cycle hiccup-mode fault recovery, while short-circuit protection reduces oscillator frequency to 1/3 nominal when VFB drops below 0.2V. The device integrates soft-start (1ms ramp), soft-stop output discharge (100Ω internal switch), and UVLO with 2.6V rising threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4A continuous - supports FPGA core rail and µP I/O supply without external boost stages. |
| Input Voltage Range | 2.8V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V intermediate bus rails. |
| Switching Frequency | 0.8–1.2MHz (typ. 1MHz); syncable to 4MHz - enables compact 1.5µH inductors and <0.4in² total PCB area. |
| Quiescent Current | 35µA in PFM mode - extends battery runtime in always-on portable instruments and barcode readers. |
| Reference Voltage | 0.8V ±3% over temp/load/line - ensures 1.2V, 1.5V, 1.8V outputs maintain ±15mV regulation accuracy. |
| Thermal Shutdown | +140°C with +25°C hysteresis - protects against sustained overload in sealed enclosures without airflow. |
| Power-Good Delay | 1ms after regulation - provides deterministic sequencing window for downstream logic initialization. |
Pinout & Package
ISL8014AIRZ-T7A is housed in a RoHS-compliant, thermally enhanced 16-lead 4mm × 4mm QFN package with exposed pad (PKG DWG L16.4x4), requiring connection of the exposed pad to SGND for optimal thermal resistance (θJC = 3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 VIN | Input power supply | Accepts 2.8–5.5V; requires local 10µF ceramic decoupling to PGND. |
| 3 VDD | Analog supply rail | Must be tied directly to VIN; powers bandgap, error amp, and logic circuits. |
| 4 SYNCH | Mode control / sync input | Pull high for forced PWM; pull low for PFM; apply external clock (≤4MHz, falling edge) for synchronization. |
| 5 EN | Enable input | Active-high logic; drives low to shut down and discharge output capacitor via internal 100Ω switch. |
| 7 PG | Open-drain power-good | 1ms-delayed active-low signal indicating regulated output; requires external pull-up resistor. |
| 8 VFB | Feedback node | Connects to resistor divider; regulates output to 0.8V reference; bias current <0.1µA minimizes divider error. |
| 14, 15 LX | Switching node | Drives external inductor; handles peak currents up to 7.1A; requires tight layout to minimize EMI. |
| 11, 12 PGND | Power ground | High-current return path for MOSFETs and inductor; must be low-inductance plane separate from SGND. |
| 9, 10 SGND | Signal ground | Reference for VFB, EN, SYNCH, PG; connected to exposed pad for thermal and noise integrity. |
| 6, 13, 16 NC | No-connect | Not internally bonded; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | P- and N-channel switches with ~50mΩ RDS(on) at 5V VIN - eliminates external FETs and gate drivers, reducing BOM count and layout complexity. |
| Selectably forced PWM mode | SYNCH pin logic-high forces fixed 1MHz operation - suppresses audible noise and RF interference in sensitive measurement systems. |
| Pre-biased output startup | Soft-start operates in SKIP mode during initial power-up - prevents reverse current flow into pre-charged output capacitors. |
| Internal compensation | Fixed 27pF/390kΩ network - eliminates external compensation components and simplifies design validation for standard 1.5µH/44µF configurations. |
| Output capacitor discharge | 100Ω internal switch activated on EN low - safely discharges output during shutdown, preventing latch-up in multi-rail systems. |
Applications
| DC/DC POL Modules | µC/µP and FPGA Core Power |
|---|---|
Use Scenario: Point-of-load conversion in compact DC/DC modules for telecom and networking equipment. IC Role / Device Role / Timing Role: Primary synchronous buck controller regulating 1.2V/1.8V core voltage from 3.3V or 5V intermediate bus. Use Value: 4A output and 1MHz switching enable <0.4in² module footprint; SYNC input allows phase interleaving across multiple ISL8014AIRZ-T7A units to reduce input ripple. |
Use Scenario: Powering ARM-based microcontrollers and Xilinx Artix-7 FPGA cores in portable test equipment. IC Role / Device Role / Timing Role: High-efficiency step-down regulator with precise 0.8V reference and 3% output accuracy over temperature. Use Value: 35µA PFM quiescent current extends battery life; 100% duty cycle maintains regulation down to 2.8V input during Li-ion discharge. |
| SFP+ Transceiver Modules | Portable Instrumentation |
Use Scenario: Providing clean, low-noise 3.3V supply for SFP+ optical transceivers in small-form-factor pluggable modules. IC Role / Device Role / Timing Role: Secondary regulator deriving 3.3V from 5V host bus, with forced PWM mode eliminating switching noise near analog receivers. Use Value: 97% peak efficiency at 3.3V/2A reduces thermal load in confined module space; PG signal synchronizes transceiver initialization sequence. |
Use Scenario: Power management in handheld oscilloscopes and multimeters operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Main system regulator supporting variable loads (0–4A) while maintaining <15mV output deviation across battery voltage range. Use Value: Thermal shutdown (+140°C) and hiccup-mode OCP prevent field failures under probe short-circuit conditions; soft-stop discharge avoids residual voltage hazards during battery swap. |
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-T7A | 3A output rating, identical pinout and feature set except lower current limit and reduced thermal capability (θJA = 42°C/W vs 39°C/W). | Suitable for ≤3A loads where board space and BOM reuse are prioritized over headroom. | Select ISL8013AIRZ-T7A only if full 4A capability is not required; verify thermal margin with actual PCB copper area. |
| TPS54340DDAR | Non-synchronous buck (external diode), 4.5A rating, 3.5–42V input, no PFM mode, higher IQ (146µA), no internal soft-stop discharge. | Better suited for wide-input industrial supplies but lacks battery-optimized features like PFM and 100% duty cycle. | Choose TPS54340DDAR only for high-input-voltage (>5.5V) applications where synchronous efficiency is secondary to input range. |
Compared with ISL8014AIRZ-T7A, ISL8013AIRZ-T7A offers direct pin compatibility at reduced current capacity, while TPS54340DDAR trades battery-specific features for broader input voltage support-neither provides identical light-load efficiency or integrated discharge functionality.
Availability
ISL8014AIRZ-T7A is available at Aetrix Electronics and suitable for DC/DC POL modules, µC/FPGA power delivery, and portable instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8014AIRZ-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 is a global semiconductor leader specializing in microcontrollers, analog power management, and timing solutions for industrial, automotive, and communications markets.
The ISL8014AIRZ-T7A belongs to Renesas' ISL80xx family of high-efficiency synchronous buck regulators designed specifically for battery-powered portable equipment and space-constrained point-of-load applications.
FAQ
What is the maximum output current capability of the ISL8014AIRZ-T7A?
The ISL8014AIRZ-T7A delivers up to 4A continuous output current under recommended operating conditions (TA = –40°C to +85°C, VIN = 2.8V–5.5V). Peak switch current is limited to 6.0A (typical), with hiccup-mode protection engaging above 7.1A. Derating is required above +85°C ambient due to thermal limits.
Does the ISL8014AIRZ-T7A support pre-biased output startup?
Yes, the ISL8014AIRZ-T7A supports pre-biased output startup. During soft-start, it operates in SKIP mode to prevent reverse current flow into a pre-charged output capacitor. This behavior is confirmed in the datasheet's Theory of Operation section and validated in Figure 24 (Soft-Start with Pre-Biased 1V).
How does the SYNCH pin configure operating mode on the ISL8014AIRZ-T7A?
The SYNCH pin selects between three modes: logic-high (>1.4V) forces continuous PWM operation; logic-low (<0.4V) enables discontinuous PFM mode for lowest quiescent current; an external clock signal (≤4MHz, negative-edge triggered) synchronizes switching frequency. Floating the pin is prohibited per datasheet Pin Descriptions.
What is the purpose of the exposed pad on the ISL8014AIRZ-T7A QFN package?
The exposed pad on the ISL8014AIRZ-T7A must be connected to the SGND net-not PGND-to ensure proper electrical performance and thermal dissipation. Datasheet Page 2 specifies that multiple vias should connect the pad to an internal SGND plane to achieve θJC = 3°C/W and maintain junction temperature within safe limits at full load.
Can the ISL8014AIRZ-T7A regulate output voltage below 0.8V?
No, the ISL8014AIRZ-T7A has a fixed 0.8V internal reference voltage and is not designed for sub-0.8V outputs. The feedback network scales the output to match this reference; attempting lower voltages violates the error amplifier's operating range and results in loss of regulation. For <0.8V applications, a different regulator with adjustable reference or external reference injection is required.
ISL8014AIRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-VQFN 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):
- 2.8V
- 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-T7A FAQ
1.How can I place an order for ISL8014AIRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8014AIRZ-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 ISL8014AIRZ-T7A reliable?
The price and inventory of ISL8014AIRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8014AIRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8014AIRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8014AIRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8014AIRZ-T7A?
ISL8014AIRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8014AIRZ-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 ISL8014AIRZ-T7A?
For technical support, including ISL8014AIRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8014AIRZ-T7A requirements.
6.How does Aetrix verify that ISL8014AIRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8014AIRZ-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 ISL8014AIRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8014AIRZ-T7A?
All ISL8014AIRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8014AIRZ-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 ISL8014AIRZ-T7A part is unused and in its original packaging.
Return procedure for ISL8014AIRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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