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Renesas ISL80015FRZ-T7A
- Part No.:
- ISL80015FRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80015FRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,257
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Product details
Overview
ISL80015FRZ-T7A from Renesas (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 1MHz switching frequency with 0.6V feedback reference and integrated PMOS/NMOS power stage in an 8-pin 2mm×2mm TDFN package. It supports 100% duty cycle operation and is used in point-of-load regulation for industrial and telecom equipment.
For engineers reviewing the ISL80015FRZ-T7A datasheet, ISL80015FRZ-T7A pinout, ISL80015FRZ-T7A application, or ISL80015FRZ-T7A equivalent, key selection criteria include its -40°C to +125°C operating junction temperature, 1.5A output capability at 1MHz, integrated soft-start and power-good signaling, and thermal shutdown with 25°C hysteresis - all critical for high-reliability embedded power designs.
Technical Context
The ISL80015FRZ-T7A employs peak current-mode PWM control with internal slope compensation (900mV/Ts) and a transconductance error amplifier (40µA/V) clamped at 1.6V output. Its architecture eliminates the need for an external boot capacitor due to the integrated PMOS high-side switch.
It features dual protection layers: overcurrent detection via CSA output (300mV/A gain) tripping at 2.1–2.9A depending on VIN, and short-circuit response via VFB monitoring (<0.3V threshold), which reduces oscillator frequency to 1/3 nominal during fault events.
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 regulators. |
| IOUT Max | 1.5A continuous - sufficient for FPGA I/O banks, microcontroller cores, and sensor signal chains. |
| fSW | 1MHz - enables use of compact 2.2µH inductors and reduces EMI compared to lower-frequency alternatives. |
| VFB Reference | 0.600V ±6mV - sets output voltage via resistor divider; allows precise 0.8V–5.5V programmable regulation. |
| Thermal Shutdown | 150°C with 25°C hysteresis - ensures safe recovery after overload or poor heatsinking without latch-up. |
| Efficiency Peak | Up to 95% - minimizes thermal load in space-constrained modules and extends battery runtime. |
| PG Delay | 1ms rising-edge delay after soft-start - provides stable power-good assertion timing for downstream sequencers. |
Pinout & Package
ISL80015FRZ-T7A uses an 8-pin 2mm×2mm TDFN package with exposed thermal pad (EPAD), RoHS-compliant, moisture sensitivity level (MSL) 3, and rated for -40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply rail | Supplies both power stage and internal LDO; 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 regulator and discharges output via 100Ω internal switch. |
| SGND (Pin 3) | Signal ground reference | Must be connected directly to EPAD; separates analog sensing from power return paths. |
| PG (Pin 4) | Power-good open-drain output | Pulled low during soft-start and fault conditions; includes 5MΩ internal pull-up; asserts high after 1ms delay if VFB is within ±15% of 0.6V. |
| FB (Pin 5) | Feedback node for voltage regulation | Connects to resistor divider; monitors output; also used by UV/OV protection circuits and PG window comparator. |
| 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 switching current; must connect directly to PCB ground plane with multiple vias under EPAD. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt current; discharged via 100Ω resistor during shutdown to prevent floating output. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS/NMOS power stage | rDS(ON) = 117mΩ (P-FET) / 86mΩ (N-FET) at VIN=5V - eliminates external MOSFETs and boot capacitor, reducing BOM count by ≥4 components. |
| 100% duty cycle operation | Enables dropout operation down to VOUT ≈ VIN − 0.2V at light loads - critical for low-VIN applications like battery backup rails. |
| Negative current protection | Shuts off both FETs if inductor valley current reaches −1.5A for two consecutive cycles - prevents reverse current damage during fast load transients. |
| Internal soft-start | Fixed 1ms ramp time - limits inrush current into output capacitors and avoids undershoot on enable. |
| VIN undervoltage lockout | 2.7V rising threshold with 2.2–2.4V falling hysteresis - prevents erratic startup during brown-out conditions. |
Applications
| Industrial PLC I/O Modules | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating clean 1.8V/1.5A power for isolated ADC drivers and precision op-amps in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary point-of-load regulator with tight line/load regulation (±0.28%/V, <−0.2%/A) and low-noise PWM operation. Use Value: Maintains ADC ENOB by limiting output ripple to <50mVpp and enabling fast transient recovery (<10µs) during digital burst activity. | Use Scenario: Supplying 3.3V/1.2A to low-power biosensor front-ends in portable diagnostic devices with strict thermal limits. IC Role / Device Role / Timing Role: High-efficiency buck converter with thermal shutdown (150°C) and 100% duty cycle for battery-saver mode. Use Value: Extends battery life via 95% peak efficiency and ultra-low shutdown current (1.2µA), while ensuring safe shutdown before sensor IC damage. |
| Telecom Line Card Management | Automotive Infotainment Core Logic |
Use Scenario: Generating 1.2V/1.5A for FPGA configuration and management processors in carrier-grade access switches. IC Role / Device Role / Timing Role: Synchronous buck regulator with power-good (PG) signaling and EN-controlled sequencing for multi-rail systems. Use Value: Enables reliable hot-swap compliance via controlled soft-start and PG assertion timing synchronized to system reset generators. | Use Scenario: Powering 2.5V/1.0A application processor subsystems in head-unit designs requiring AEC-Q200-aligned thermal robustness. IC Role / Device Role / Timing Role: Automotive-grade DC/DC converter qualified to −40°C to +125°C junction temperature with thermal hysteresis. Use Value: Meets automotive thermal cycling requirements without derating below 1.5A up to +85°C ambient, verified per JEDEC JESD22-A104. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 3V–17V input, 3A output, 2.5MHz fixed frequency, 0.6V reference, 12-pin WSON | Wider VIN range and higher current; suited for 12V intermediate bus conversion where ISL80015FRZ-T7A's 5.5V max VIN is insufficient | Select when input exceeds 5.5V or >1.5A load required; verify layout compatibility with larger package and different pinout. |
| RT7297CGJ6F | 2.5V–5.5V input, 1.5A output, 1.5MHz switching, 0.6V reference, 8-pin TSOT-23 | Same current rating and VIN range but smaller TSOT-23 package; lacks PG pin and thermal hysteresis spec | Choose for space-constrained designs where power-good signaling and precise thermal recovery are not required. |
Compared with TPS62130ARGTR and RT7297CGJ6F, the ISL80015FRZ-T7A offers superior thermal hysteresis (25°C vs unspecified), integrated PG with 1ms delay, and proven 125°C ambient operation - making it preferred for industrial and telecom applications demanding deterministic fault recovery and sequencing integrity.
Availability
ISL80015FRZ-T7A is available at Aetrix Electronics and suitable for industrial PLCs, medical sensor modules, and telecom line cards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL80015FRZ-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 Corporation acquired Intersil in 2017 and maintains full technical and manufacturing continuity for the ISL800xx family of high-efficiency DC/DC converters.
The ISL80015FRZ-T7A belongs to Renesas' compact synchronous buck converter product line, designed specifically for space-constrained, thermally demanding point-of-load applications in industrial, medical, and communications infrastructure.
FAQ
What is the maximum ambient temperature at which ISL80015FRZ-T7A can deliver full 1.5A output current?
The ISL80015FRZ-T7A delivers full 1.5A output current up to +85°C ambient temperature when properly heatsinked via its exposed thermal pad. Above this, output current must be derated per Figure 27 in the datasheet to maintain junction temperature ≤125°C. At +125°C ambient, maximum continuous output drops to ~0.8A depending on VIN/VOUT and airflow.
Does ISL80015FRZ-T7A require an external boot capacitor?
No, ISL80015FRZ-T7A does not require an external boot capacitor because it integrates a PMOS high-side switch. This eliminates the need for charge-pump circuitry and associated external components, reducing total solution size and improving reliability compared to NMOS-based buck controllers.
How is the output voltage programmed on ISL80015FRZ-T7A?
The output voltage of ISL80015FRZ-T7A is programmed using an external resistor divider connected between VOUT, FB, and GND. With a fixed 0.600V internal reference, R1 and R2 values are calculated using Equation 5: R1 = R2 × (VOUT/0.6 − 1). For example, 1.8V output requires R1 = 200kΩ and R2 = 100kΩ (1% tolerance).
What protection features are built into ISL80015FRZ-T7A?
ISL80015FRZ-T7A includes overcurrent protection (OCP) triggered at 2.1–2.9A, short-circuit protection (SCP) via VFB monitoring (<0.3V), negative current protection (−1.5A valley limit), thermal shutdown (150°C), VIN undervoltage lockout (2.7V), and VOUT overvoltage/undervoltage detection feeding the PG pin - all implemented in hardware without software intervention.
Can ISL80015FRZ-T7A operate with 100% duty cycle, and under what conditions?
Yes, ISL80015FRZ-T7A supports 100% duty cycle operation at 1MHz switching frequency, enabling dropout regulation where VOUT approaches VIN. This occurs only at light loads and low input voltages (e.g., VIN = 3.0V, VOUT = 2.8V), and is disabled at 2MHz variants - confirming ISL80015FRZ-T7A's specific suitability for ultra-low dropout scenarios.
ISL80015FRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WFDFN 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:
- 1.5A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80015FRZ-T7A FAQ
1.How can I place an order for ISL80015FRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80015FRZ-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 ISL80015FRZ-T7A reliable?
The price and inventory of ISL80015FRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80015FRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80015FRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80015FRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80015FRZ-T7A?
ISL80015FRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80015FRZ-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 ISL80015FRZ-T7A?
For technical support, including ISL80015FRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80015FRZ-T7A requirements.
6.How does Aetrix verify that ISL80015FRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80015FRZ-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 ISL80015FRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80015FRZ-T7A?
All ISL80015FRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80015FRZ-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 ISL80015FRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80015FRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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