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Renesas ISL80020IRZ-T7A
- Part No.:
- ISL80020IRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80020IRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,212
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Product details
Overview
ISL80020IRZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC converter delivering up to 2A 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. It enables compact point-of-load regulation in space-constrained industrial and telecom systems.
For engineers reviewing the ISL80020IRZ-T7A datasheet, ISL80020IRZ-T7A pinout, ISL80020IRZ-T7A application, or ISL80020IRZ-T7A equivalent, key selection criteria include its 1MHz fixed-frequency PWM control, 100% duty-cycle capability, thermal/overcurrent protection, and 2mm×2mm TDFN package with exposed pad for thermal management.
Technical Context
The ISL80020IRZ-T7A uses peak current-mode PWM control with internal slope compensation (900mV/Ts) and a transconductance error amplifier (40µA/V) clamped at 1.6V. Its architecture eliminates the need for an external boot capacitor via integrated PMOS high-side switch.
It features dedicated protection circuits: overcurrent detection (3.18A typical peak limit), short-circuit response (VFB < 0.3V triggers 1/3-frequency mode), negative current shutdown (−1.5A valley for 2 cycles), and thermal shutdown at +150°C with +25°C hysteresis.
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 | 2A continuous - sufficient for FPGA I/O banks, microcontroller cores, and ASIC auxiliary rails. |
| fSW | 1MHz (fixed) - enables use of small 2.2µH inductors and reduces EMI compared to lower frequencies. |
| VFB Reference | 0.600V ±6mV - sets output voltage via resistor divider; supports 0.6V to 5.5V programmable range. |
| Efficiency | Up to 95% peak - achieved via low RDS(ON) PMOS (117mΩ) and NMOS (86mΩ) switches at VIN=5V. |
| Thermal Protection | 150°C shutdown / 125°C resume - prevents latch-up during sustained overload or poor PCB heatsinking. |
| Soft-Start Time | 1ms - controls inrush current during power-up; prevents output overshoot and input rail sag. |
Pinout & Package
ISL80020IRZ-T7A is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (EPAD), RoHS-compliant, moisture sensitivity level MSL3, and rated for −40°C to +125°C junction temperature. The EPAD must be soldered to PGND for electrical integrity and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Supplies both power stage and internal LDO bias; requires ≥10µF ceramic decoupling close to pin. |
| EN | Enable control input | Active-high logic: device enabled when >1.4V; pulled low disables regulator and discharges output via 100Ω PHASE path. |
| SGND | Signal ground reference | Must be connected directly to EPAD; separates analog sensing from noisy power ground paths. |
| PG | Power-good open-drain output | Pulled low during soft-start and fault conditions; has internal 5MΩ pull-up; asserts after 1ms delay if VOUT is within ±15% of setpoint. |
| FB | Feedback input | Connects to resistor divider; monitors regulated output; used by UV/OV protection and PG comparator. |
| NC | No-connect terminal | Internally unconnected; must be tied to EPAD for mechanical stability and thermal conduction. |
| PGND | Power and analog ground | Main return path for inductor current and IC ground; requires low-impedance connection to board GND plane. |
| PHASE | Switching node | Connects to inductor; carries high di/dt switching current; discharged via 100Ω resistor during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity. |
| 100% duty cycle operation | Enables dropout operation down to VOUT ≈ VIN − losses - critical for low-VIN applications like battery backup rails. |
| Integrated soft-start and soft-stop | 1ms controlled ramp-up prevents inrush; internal 100Ω discharge path ensures safe output collapse during disable. |
| VIN undervoltage lockout | 2.7V rising threshold ensures stable startup only when input rail is sufficiently established. |
| Negative current protection | Shuts down both FETs if inductor valley current reaches −1.5A for two consecutive cycles - prevents reverse conduction damage. |
Applications
| Industrial Sensor Node Power | Telecom Line Card POL |
|---|---|
Use Scenario: Powers 3.3V/2A FPGA I/O bank and ADC/DAC peripherals in a DIN-rail mounted condition monitoring module. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated, low-noise 3.3V rail with fast transient response to digital load steps. Use Value: 95% efficiency at full load minimizes thermal stress in sealed enclosures; 1MHz switching allows compact 2.2µH inductor and 22µF ceramic output cap. |
Use Scenario: Supplies 1.8V/2A core voltage to a multi-port Ethernet PHY on a carrier-grade line card with strict thermal budget. IC Role / Device Role / Timing Role: Point-of-load DC/DC converter placed adjacent to the PHY die to minimize IR drop and noise coupling. Use Value: 0.6V feedback reference enables precise 1.8V output (R1=200kΩ, R2=100kΩ); PG signal synchronizes system power sequencing with host controller. |
| Medical Imaging Front-End | Game Console SoC Auxiliary Rail |
Use Scenario: Delivers clean 2.5V/2A supply to high-speed analog front-end (AFE) in portable ultrasound equipment. IC Role / Device Role / Timing Role: Low-noise, high-PG-accuracy buck converter ensuring AFE dynamic range is not degraded by supply ripple or sequencing errors. Use Value: ±6mV VFB tolerance and <0.28%/V line regulation ensure <±1% output deviation across input range; thermal shutdown protects against sensor overheating faults. |
Use Scenario: Generates 1.2V/2A core voltage for GPU subsystem in handheld gaming device with aggressive size constraints. IC Role / Device Role / Timing Role: Compact, high-efficiency step-down regulator enabling direct integration into dense SoC power delivery network. Use Value: 2mm×2mm TDFN footprint occupies <64mm² total area; exposed EPAD enables >10W thermal dissipation with 4+ vias to inner ground layer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL80020AIRZ-T7A | 2MHz switching frequency (vs. 1MHz); identical 2A rating, package, and feature set. | Better suited for ultra-compact designs requiring smallest possible inductor (1.2µH typical) and faster transient response. | Select ISL80020AIRZ-T7A when board area is constrained and higher-frequency EMI filtering is acceptable. |
| TPS62231DRYT | TI part: 2A, 2.05–6.5V input, 2.25MHz, 0.6V VFB, but lacks 100% duty cycle and integrated negative current protection. | Requires external boot capacitor; less robust under light-load or reverse-current conditions. | Choose TPS62231DRYT only if higher input voltage range (up to 6.5V) is required and 100% duty cycle is unnecessary. |
Compared with ISL80020AIRZ-T7A, the ISL80020IRZ-T7A trades higher-frequency EMI for lower gate drive losses and simpler EMI filter design; versus TPS62231DRYT, it offers superior fault resilience and boot-capacitor-free operation at the cost of narrower VIN range.
Availability
ISL80020IRZ-T7A is available at Aetrix Electronics and suitable for industrial sensor nodes, telecom line cards, medical imaging front-ends, and game console SoC auxiliary rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL80020IRZ-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 acquired Intersil in 2017 and maintains full technical and manufacturing continuity for the ISL800xx family. Renesas is a global semiconductor leader focused on embedded solutions, analog power, and connectivity.
The ISL80020IRZ-T7A belongs to Renesas' compact synchronous buck converter product line, designed specifically for high-efficiency, space-constrained point-of-load regulation in industrial, telecom, and portable medical equipment.
FAQ
What is the maximum continuous output current of the ISL80020IRZ-T7A?
The ISL80020IRZ-T7A delivers up to 2A of continuous output current across its full operating temperature range (−40°C to +125°C junction), verified per datasheet Table 1 and Electrical Specifications section. This rating assumes proper thermal management via the exposed pad and adequate PCB copper area. Derating applies above +85°C ambient depending on layout and airflow.
Does the ISL80020IRZ-T7A require an external boot capacitor?
No, the ISL80020IRZ-T7A does not require an external boot capacitor because it integrates a PMOS high-side switch. This architecture eliminates the bootstrap circuitry needed for NMOS-based controllers, reducing component count and simplifying layout. The datasheet explicitly states this advantage in the Features and Theory of Operation sections.
What protection features are built into the ISL80020IRZ-T7A?
The ISL80020IRZ-T7A includes overcurrent protection (OCP), short-circuit protection (SCP), negative current protection, thermal shutdown (+150°C), VIN undervoltage lockout (UVLO), and VOUT overvoltage/undervoltage monitoring via the FB pin. Each is independently implemented in hardware - for example, OCP trips at 3.18A typical peak current, while negative current protection shuts down both FETs if inductor valley current reaches −1.5A for two cycles.
Can the ISL80020IRZ-T7A operate at 100% duty cycle?
Yes, the ISL80020IRZ-T7A supports 100% duty cycle operation at its 1MHz switching frequency, enabling dropout operation where VOUT approaches VIN. This is confirmed in the Datasheet Features list and Theory of Operation section. It is not supported at 2MHz - only the ISL80020A variants offer 2MHz operation.
What is the recommended output capacitor for the ISL80020IRZ-T7A?
The datasheet recommends 22µF X5R or X7R ceramic capacitors for the output, placed close to the PHASE and PGND pins. Equation 6 and layout guidance specify low-ESR ceramics to leverage the current-mode control loop's stability. Due to DC bias derating, actual in-circuit capacitance may be ~50% of rated value - select parts with published DC bias curves (e.g., 22µF rated at 6.3V for 3.3V output).
ISL80020IRZ-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:
- 2A
- 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)
ISL80020IRZ-T7A FAQ
1.How can I place an order for ISL80020IRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80020IRZ-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 ISL80020IRZ-T7A reliable?
The price and inventory of ISL80020IRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80020IRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80020IRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80020IRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80020IRZ-T7A?
ISL80020IRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80020IRZ-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 ISL80020IRZ-T7A?
For technical support, including ISL80020IRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80020IRZ-T7A requirements.
6.How does Aetrix verify that ISL80020IRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80020IRZ-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 ISL80020IRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80020IRZ-T7A?
All ISL80020IRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80020IRZ-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 ISL80020IRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80020IRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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