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Renesas ISL80015AFRZ-T
- Part No.:
- ISL80015AFRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80015AFRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,563
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Product details
Overview
ISL80015AFRZ-T from Renesas Electronics (formerly Intersil) is a monolithic synchronous buck DC/DC converter delivering up to 1.5A continuous output current from a 2.7V–5.5V input, operating at 2MHz switching frequency with 0.6V feedback reference and integrated PMOS/NMOS power stage. It enables compact point-of-load regulation in space-constrained industrial and telecom systems.
For engineers reviewing the ISL80015AFRZ-T datasheet, ISL80015AFRZ-T pinout, ISL80015AFRZ-T application, or ISL80015AFRZ-T equivalent, key selection criteria include its 2MHz operation for small external inductors, -40°C to +125°C extended temperature rating, 100% duty cycle capability at 1MHz (not applicable at 2MHz), and integrated thermal/overcurrent protection without boot capacitor requirement.
Technical Context
This device uses peak current-mode PWM control with internal slope compensation (900mV/Ts) and transconductance error amplifier (40µA/V) for fast transient response. The 0.6V reference voltage sets output via external resistor divider, and internal soft-start ensures controlled ramp-up over 1ms.
It integrates low-rDS(ON) PMOS (117mΩ) and NMOS (86mΩ) switches, eliminating boot capacitor need. Protection includes overcurrent (2.1–2.9A trip), thermal shutdown (150°C), negative current detection (-1.5A over 2 cycles), and VOUT monitoring via PG pin with ±15% window and 5MΩ internal pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and industrial 3.3V/5V rails without external LDO pre-regulation. |
| IOUT Max | 1.5A continuous - sufficient for FPGA I/O banks, microcontroller cores, and sensor signal chains. |
| fSW | 2MHz nominal - enables use of ≤2.2µH inductors and reduces output ripple without increasing EMI filtering complexity. |
| VFB | 0.600V ±6mV - precise reference enabling accurate output programming from 0.6V to 5.5V with external resistive divider. |
| Thermal Range | -40°C to +125°C junction - qualified for under-hood automotive ancillary modules and industrial motor drives. |
| Efficiency | Up to 95% peak - minimizes thermal load in sealed enclosures and extends battery runtime in portable instrumentation. |
| Protection | Overcurrent, thermal shutdown, UVLO, OVP/UVP on PG, negative current - enables robust operation without external supervision circuitry. |
Pinout & Package
ISL80015AFRZ-T is housed in an 8-pin 2mm × 2mm TDFN package with exposed thermal pad (EPAD) connected to PGND for enhanced thermal dissipation. Pin 9 (EPAD) must be soldered to a dedicated PGND copper plane using ≥4 vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply rail | Supplies both power stage and internal bias regulator; requires ≥10µF ceramic decoupling placed adjacent to pin. |
| EN (Pin 2) | Enable control input | Active-high logic: device enabled when >1.4V; pulled low disables converter and discharges output via 100Ω internal switch. |
| SGND (Pin 3) | Signal ground reference | Must be connected directly to EPAD to minimize noise coupling into feedback and control circuits. |
| PG (Pin 4) | Power-good open-drain output | Pulled low during soft-start and fault conditions; high-impedance when VOUT is within ±15% of regulation; includes 5MΩ internal pull-up. |
| FB (Pin 5) | Feedback node for voltage regulation | Connects to resistor divider midpoint; monitors output accuracy and triggers PG fault if VFB <0.51V or >0.69V. |
| NC (Pin 6) | No-connect terminal | Internally unconnected; must be tied to EPAD for mechanical stability and thermal conduction. |
| PGND (Pin 7) | Power and analog ground return | Primary ground path for high-current switching loop; must connect directly to board GND plane with low-inductance trace. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries full switching current; discharged via 100Ω resistor during shutdown to prevent output hold-up. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and PCB area by ~15mm² versus bootstrap-based alternatives. |
| 2MHz fixed-frequency operation | Enables use of 1.0–2.2µH inductors, cutting solution size by >30% compared to 500kHz converters at same current rating. |
| Internal soft-start (1ms) | Prevents inrush current into downstream capacitance, avoiding input rail collapse and system reset during power-up. |
| 100% duty cycle support (at 1MHz) | Allows dropout operation down to VIN ≈ VOUT, critical for battery-powered systems nearing end-of-discharge. |
| Negative current protection | Detects reverse inductor current (-1.5A over 2 cycles) and shuts off both FETs, preventing energy backfeed into source during light-load discontinuous mode. |
Applications
| Industrial Sensor Node | Telecom Line Card |
|---|---|
Use Scenario: Compact 1.8V/1.5A supply for MEMS accelerometer, ADC, and wireless SoC in IP67-rated field transmitter. IC Role / Device Role / Timing Role: Primary POL regulator converting 3.3V backplane to precision analog/digital domain rail. Use Value: 2MHz operation allows 1.5µH shielded inductor occupying <3mm² footprint; -40°C to +125°C rating ensures reliability across ambient extremes. | Use Scenario: Point-of-load conversion for FPGA I/O bank on 40Gbps optical line card with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency buck regulator providing clean, regulated 1.2V/1.5A with minimal layout area near FPGA BGA. Use Value: Peak efficiency >93% at 1A reduces localized heating; integrated PG signal enables FPGA configuration lockstep with power readiness. |
| Portable Medical Monitor | Gaming Console Power Subsystem |
Use Scenario: Battery-powered ECG front-end requiring ultra-low-noise 3.3V/1.2A rail from single-cell Li-ion (2.7–4.2V). IC Role / Device Role / Timing Role: Main system regulator supporting analog signal chain and low-power MCU during 72-hour continuous operation. Use Value: 1.2µA shutdown current extends battery life; 0.6V reference enables accurate 3.3V setting with 1% resistors (R1=450kΩ, R2=100kΩ). | Use Scenario: Secondary 1.5V/1.5A supply for GPU memory interface in handheld gaming device with thermal constraints. IC Role / Device Role / Timing Role: Fast-transient POL converter responding to dynamic GPU load steps up to 1A/µs. Use Value: Current-mode control delivers <50µs recovery from 50%–100% load step; thermal pad + vias maintain junction <115°C at full load in 40°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 3A rated, 2.5V–6V input, 2.5MHz switching, 0.6V reference, but requires external boot capacitor and lacks negative current protection. | Better suited for higher-current applications where 3A headroom is needed; less optimal for ultra-compact layouts due to larger required inductor. | Select when >1.5A output or wider VIN range is required; verify boot circuit design and transient behavior under light-load DCM. |
| MP2143GJ-Z | 1.5A rated, 2.5V–5.5V input, 2MHz switching, 0.6V reference, no boot cap, but only rated to +85°C ambient and lacks PG pin. | Appropriate for commercial-grade consumer devices; unsuitable for extended-temperature industrial or automotive environments. | Choose for cost-sensitive, non-extended-temp designs where power-good sequencing is handled externally. |
Compared with TPS62130ARGTR and MP2143GJ-Z, ISL80015AFRZ-T uniquely combines -40°C to +125°C operation, integrated PG with ±15% window, and boot-cap-free PMOS architecture-making it optimal for thermally demanding, safety-critical POL applications where layout area and reliability are prioritized over raw current headroom.
Availability
ISL80015AFRZ-T is available at Aetrix Electronics and suitable for industrial sensor nodes, telecom line cards, and portable medical monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL80015AFRZ-T 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 Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for industrial, automotive, and infrastructure markets.
The ISL800xx family was designed specifically for high-efficiency, space-constrained point-of-load regulation in battery-powered and thermally demanding applications-emphasizing integration, thermal robustness, and simplified layout.
FAQ
What is the maximum output current capability of the ISL80015AFRZ-T?
The ISL80015AFRZ-T delivers up to 1.5A of continuous output current across its full operating temperature range (-40°C to +125°C). This rating is validated under typical conditions: VIN = 3.3V or 5V, fSW = 2MHz, and proper PCB thermal design with EPAD connected to PGND plane via ≥4 vias. Peak current limit is 2.1–2.9A depending on input voltage, ensuring reliable short-circuit protection without external current-sense components.
Does the ISL80015AFRZ-T require an external boot capacitor?
No, the ISL80015AFRZ-T does not require an external boot capacitor because it uses a PMOS high-side switch instead of an NMOS. This architecture eliminates the need for charge-pump or bootstrap circuitry, reducing component count, PCB area, and potential failure points. The internal bias regulator derives all necessary gate drive voltages directly from VIN, simplifying design and improving reliability in compact layouts.
What is the function of the PG (power-good) pin on the ISL80015AFRZ-T?
The PG pin on the ISL80015AFRZ-T is an open-drain output that signals valid output regulation. It remains low during soft-start (1ms delay) and pulls low if VFB falls below 0.51V or rises above 0.69V (±15% of 0.6V reference), indicating undervoltage or overvoltage fault. With a 5MΩ internal pull-up, PG transitions to high-impedance when regulation is stable-enabling system-level power sequencing and fault detection without external comparators.
Can the ISL80015AFRZ-T operate at 100% duty cycle?
The ISL80015AFRZ-T supports 100% duty cycle operation only when configured for 1MHz switching frequency-not at its default 2MHz setting. This feature allows dropout operation (VIN ≈ VOUT), which is essential for battery-powered systems nearing end-of-discharge. At 2MHz, maximum duty cycle is limited to ~90% to maintain minimum off-time for proper current sensing and control loop stability.
What thermal derating applies to the ISL80015AFRZ-T at elevated ambient temperatures?
At ambient temperatures above +85°C, the ISL80015AFRZ-T requires output current derating to maintain junction temperature ≤+125°C. With θJA = 71°C/W and typical power dissipation, full 1.5A output is sustainable up to +85°C only with optimal thermal design (EPAD fully connected to solid PGND plane via ≥4 vias). Above +85°C, output current must be linearly reduced-e.g., to ~1.1A at +105°C ambient-to prevent thermal shutdown activation.
ISL80015AFRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80015AFRZ-T FAQ
1.How can I place an order for ISL80015AFRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80015AFRZ-T 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 ISL80015AFRZ-T reliable?
The price and inventory of ISL80015AFRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80015AFRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80015AFRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80015AFRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80015AFRZ-T?
ISL80015AFRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80015AFRZ-T 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 ISL80015AFRZ-T?
For technical support, including ISL80015AFRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80015AFRZ-T requirements.
6.How does Aetrix verify that ISL80015AFRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80015AFRZ-T 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 ISL80015AFRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80015AFRZ-T?
All ISL80015AFRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80015AFRZ-T, 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 ISL80015AFRZ-T part is unused and in its original packaging.
Return procedure for ISL80015AFRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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