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Renesas ISL80015IRZ-T
- Part No.:
- ISL80015IRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80015IRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
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Product details
Overview
ISL80015IRZ-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 1MHz switching frequency in an 8-pin 2mm×2mm TDFN package with exposed thermal pad. It integrates low-rDS(ON) PMOS/NMOS power switches, eliminates boot capacitor requirement, and supports 100% duty cycle operation for ultra-low dropout applications in space-constrained POL designs.
For engineers reviewing the ISL80015IRZ-T datasheet, ISL80015IRZ-T pinout, ISL80015IRZ-T application, or ISL80015IRZ-T equivalent, key selection criteria include its 1.5A/1MHz rating, 0.6V feedback reference, integrated thermal/overcurrent protection, and compatibility with compact ceramic-input/output capacitor layouts for industrial and telecom point-of-load systems.
Technical Context
The ISL80015IRZ-T employs peak current-mode PWM control with internal slope compensation (900mV/Ts) and a transconductance error amplifier (40µA/V) clamped at 1.6V, enabling fast transient response and stable regulation across 0.6V–5.5V output range. Its architecture uses a PMOS high-side switch to avoid boot capacitor dependency and incorporates negative current detection (-1.5A threshold over two cycles) for safe discontinuous conduction mode recovery.
It features dual-stage protection: OCP triggers at 2.1–2.9A (1.5A variant), SCP activates when FB falls below 0.3V, and thermal shutdown engages at +150°C with +25°C hysteresis. Power-good monitoring uses a window comparator referenced to ±15% of VFB (0.589–0.606V), with 1ms delay after soft-start before assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rail inputs without external regulators |
| IOUT Max | 1.5A continuous - sufficient for FPGA I/O banks, microcontroller cores, and sensor signal chains |
| fSW | 1MHz nominal - enables use of ≤2.2µH inductors and reduces EMI filtering burden vs lower-frequency converters |
| VFB | 0.600V ±1% - sets output voltage via resistor divider; allows precise 0.6V–5.5V programming with <±0.2%/A load regulation |
| Efficiency | Up to 95% peak - achieved using 117mΩ PMOS and 86mΩ NMOS integrated FETs, minimizing conduction loss at light-to-moderate loads |
| Thermal Protection | +150°C shutdown / +125°C restart - ensures reliability in sealed enclosures or high-ambient industrial environments |
| Soft-start | 1ms fixed ramp - prevents inrush current into downstream capacitors and avoids supply rail collapse during power-up |
Pinout & Package
ISL80015IRZ-T is housed in an RoHS-compliant 8-pin 2mm×2mm TDFN package with exposed thermal pad (EPAD), designed for low thermal resistance (θJA = 71°C/W, θJC = 7°C/W) and high-density PCB layouts. The EPAD must be soldered to PGND with ≥4 vias for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Supplies both power stage and internal LDO bias; requires ≥10µF ceramic decoupling placed adjacent to pin |
| EN (Pin 2) | Enable control input | Active-high logic: device enabled when >1.4V; pulled low to disable and discharge output via 100Ω internal switch |
| SGND (Pin 3) | Signal ground reference | Must be connected directly to EPAD to establish clean analog reference for feedback and control circuits |
| PG (Pin 4) | Power-good status output | Open-drain output pulled low during soft-start or if VOUT deviates >±15% from setpoint; includes 5MΩ internal pull-up |
| FB (Pin 5) | Feedback voltage sense | Inverting input to error amplifier; monitors output via resistor divider; leakage <±350nA ensures accuracy across temperature |
| NC (Pin 6) | No-connect terminal | Internally unconnected; must be tied to EPAD for mechanical stability and thermal conduction |
| PGND (Pin 7) | Power/analog ground return | Main ground path for high-current switching loop; requires low-impedance connection to board GND plane |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt current; internal 100Ω discharge path activates during shutdown |
| EPAD (Pin 9) | Exposed thermal pad | Electrically and thermally connected to PGND; mandatory for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout area while enabling 100% duty cycle operation |
| Integrated protection suite | Combines overcurrent (2.1–2.9A), short-circuit (FB <0.3V), negative current (-1.5A), thermal shutdown (+150°C), and UVLO (2.2–2.7V) for robust system-level fault tolerance |
| Internal compensation network | Fixed 27pF/200kΩ RC network eliminates external compensation components, simplifying design and improving production consistency |
| Low quiescent current | 7–15mA operating current and 1.2–10µA shutdown current enable battery-powered applications with extended standby life |
| High-efficiency FET integration | 117mΩ PMOS and 86mΩ NMOS switches minimize conduction losses, sustaining >90% efficiency at 1A load across 3.3V/1.8V outputs |
Applications
| Industrial Sensor Node | Telecom Line Card |
|---|---|
Use Scenario: Powering 3.3V/1.8V rails for MEMS sensors, ADCs, and wireless transceivers in factory-floor IoT gateways. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 5V backplane to isolated low-noise analog/digital supplies. Use Value: 1MHz switching and ceramic-capacitor compatibility reduce EMI and footprint, meeting EN 55022 Class B emissions limits without shielding. | Use Scenario: Generating 1.2V core voltage for FPGA-based packet processing engines on carrier-grade line cards. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC stage supporting burst-mode traffic with rapid load transients. Use Value: Peak current-mode control delivers <50µs recovery from 0→1.5A step load, maintaining <±1.5% output deviation per JEDEC JESD22-A114. |
| Medical Diagnostic Module | Gaming Console SoC Rail |
Use Scenario: Supplying regulated 2.5V/1.5V to precision op-amps and high-speed DACs in portable ultrasound front-ends. IC Role / Device Role / Timing Role: Low-noise, tightly regulated POL converter with soft-start sequencing to prevent digital noise coupling into analog signal paths. Use Value: 0.6V feedback reference and <±0.2%/A load regulation ensure <10mV output drift across full load range, critical for sub-LSB ADC accuracy. | Use Scenario: Delivering 1.1V CPU core power in handheld gaming devices with aggressive thermal constraints. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter operating from single-cell Li-ion (3.0–4.2V) input. Use Value: Exposed EPAD and 71°C/W θJA allow full 1.5A output at +85°C ambient without derating, validated per JEDEC JESD51-2 thermal test standard. |
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 | 1.5A/3MHz, 2.95–6V VIN, 0.6V VFB, 10-pin 3×3mm QFN | Higher fSW enables smaller inductors but increases switching loss above 1.2A; wider VIN suits 5V systems | Select for higher-frequency designs requiring <1µH inductors; verify thermal margin at 1.5A due to larger package size and different θJA |
| MP2143GJ-Z | 1.5A/2MHz, 2.5–5.5V VIN, 0.6V VFB, 8-pin 2×2mm TDFN | Same footprint and VFB, but lacks 100% duty cycle and has no internal soft-start timer | Choose for cost-sensitive applications where 100% duty cycle is unnecessary and external soft-start control is acceptable |
Compared with TPS62130ARGTR and MP2143GJ-Z, the ISL80015IRZ-T provides unique 100% duty cycle capability and fixed 1ms soft-start-critical for ultra-low dropout and deterministic power sequencing-while matching the compact 2×2mm TDFN footprint of the MP2143GJ-Z but offering superior thermal performance (θJC = 7°C/W).
Availability
ISL80015IRZ-T is available at Aetrix Electronics and suitable for industrial sensor nodes, telecom line cards, medical diagnostic modules, and gaming console SoC rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL80015IRZ-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 trusted embedded design innovation through high-performance analog, power, and microcontroller solutions.
The ISL80015IRZ-T belongs to Renesas' ISL800xx family of compact synchronous buck converters, engineered specifically for space-constrained, high-efficiency point-of-load applications in industrial, medical, and communications equipment.
FAQ
What is the maximum output current supported by the ISL80015IRZ-T?
The ISL80015IRZ-T supports up to 1.5A of continuous output current under recommended operating conditions (VIN = 2.7V–5.5V, TA ≤ +85°C). Derating is required above +85°C ambient, with full 1.5A maintained up to +85°C when the thermal pad is properly connected to PGND using ≥4 vias, per the datasheet's derating curve (Figure 27).
Does the ISL80015IRZ-T require an external boot capacitor?
No, the ISL80015IRZ-T does not require an external boot capacitor because it uses a PMOS high-side MOSFET. This architecture eliminates the need for charge-pump circuitry or external capacitors typically required by NMOS-based synchronous buck converters, reducing component count and PCB area.
What protection features are integrated into the ISL80015IRZ-T?
The ISL80015IRZ-T integrates overcurrent protection (2.1–2.9A trip), short-circuit protection (FB <0.3V), negative current protection (-1.5A over two cycles), thermal shutdown (+150°C), input undervoltage lockout (2.2–2.7V), and output overvoltage/undervoltage monitoring via the PG pin. All protections are fully internal and require no external components.
Can the ISL80015IRZ-T operate at 100% duty cycle?
Yes, the ISL80015IRZ-T supports 100% duty cycle operation when configured for 1MHz switching frequency. This enables ultra-low dropout regulation-such as generating 3.3V output from a 3.6V input-without requiring a linear post-regulator, improving system efficiency in battery-powered applications.
What is the feedback reference voltage (VFB) of the ISL80015IRZ-T and how is output voltage set?
The ISL80015IRZ-T has a precise 0.600V ±1% internal feedback reference voltage (VFB). Output voltage is set using an external resistor divider (R1/R2) connected between VOUT and GND, with R1 tied to FB. The relationship is VO = 0.6 × (1 + R1/R2); for example, 1.8V output requires R1 = 200kΩ and R2 = 100kΩ per Table 2.
ISL80015IRZ-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:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80015IRZ-T FAQ
1.How can I place an order for ISL80015IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80015IRZ-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 ISL80015IRZ-T reliable?
The price and inventory of ISL80015IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80015IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80015IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80015IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80015IRZ-T?
ISL80015IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80015IRZ-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 ISL80015IRZ-T?
For technical support, including ISL80015IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80015IRZ-T requirements.
6.How does Aetrix verify that ISL80015IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80015IRZ-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 ISL80015IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80015IRZ-T?
All ISL80015IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80015IRZ-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 ISL80015IRZ-T part is unused and in its original packaging.
Return procedure for ISL80015IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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