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Renesas ISL80020AFRZ-T7A
- Part No.:
- ISL80020AFRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80020AFRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,972
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Product details
Overview
ISL80020AFRZ-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 2MHz switching frequency with 0.6V feedback reference and integrated PMOS/NMOS power stage in an 8-pin 2mm×2mm TDFN package. It enables compact point-of-load regulation in space-constrained industrial and telecom systems.
For engineers reviewing the ISL80020AFRZ-T7A datasheet, ISL80020AFRZ-T7A pinout, ISL80020AFRZ-T7A application, or ISL80020AFRZ-T7A equivalent, key selection criteria include its -40°C to +125°C operating junction temperature, 100% duty cycle capability at 1MHz (not applicable at 2MHz), absence of boot capacitor requirement due to PMOS high-side switch, and integrated overcurrent, thermal, and negative-current protection.
Technical Context
The ISL80020AFRZ-T7A employs peak current-mode PWM control with internal slope compensation (900mV/Ts) and transconductance error amplifier (40µA/V) for fast transient response and stable regulation across load and line variations. Its 2MHz fixed-frequency operation supports small external inductors (e.g., 1.2µH) and low-ESR ceramic output capacitors.
It integrates low-rDS(ON) P-channel (117mΩ) and N-channel (86mΩ) MOSFETs, eliminating external bootstrap components. Protection features include cycle-by-cycle overcurrent detection (trip threshold ~3.18A), thermal shutdown at +150°C with +25°C hysteresis, and short-circuit response via VFB monitoring below 0.3V.
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 pre-regulation. |
| IOUT Max | 2A continuous - sufficient for FPGA I/O banks, microcontroller cores, and ASIC auxiliary rails. |
| fSW | 2MHz nominal - enables <2.2µH inductors and reduces output ripple without compromising efficiency. |
| VFB | 0.600V ±6mV - sets precise output voltage via resistor divider; supports 0.6V to 5.5V programmable range. |
| Efficiency Peak | Up to 95% - achieved at mid-load (e.g., 1.5A @ 1.8VOUT, VIN=3.3V, fSW=2MHz), minimizing thermal stress. |
| Thermal Shutdown | +150°C with +25°C hysteresis - ensures safe recovery after overload or poor heatsinking conditions. |
| Quiescent Current | 10–22mA (fSW=2MHz, no load) - balances light-load efficiency and startup speed in always-on subsystems. |
Pinout & Package
ISL80020AFRZ-T7A uses an 8-pin 2mm×2mm TDFN package with exposed thermal pad (EPAD) connected to PGND. The pinout is validated per FN6692 Rev 3.00, Page 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Supplies both power stage and internal LDO bias; requires ≥10µF ceramic decoupling close to pin. |
| EN (Pin 2) | Enable control input | Active-high logic: >1.4V enables regulator; pulled low disables and discharges output via 100Ω internal switch. |
| SGND (Pin 3) | Signal ground reference | Must be tied directly to EPAD; separates analog ground from power ground paths for noise immunity. |
| PG (Pin 4) | Power-good open-drain output | Pulled low during soft-start and fault conditions; internal 5MΩ pull-up; monitors VFB window (±15%). |
| FB (Pin 5) | Feedback node | Connects to resistor divider; error amplifier inverting input; used by PG, UVLO, and OVP circuits. |
| 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 | Main ground path for high-current switching; connect directly to PCB ground plane with multiple vias. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt current; internal 100Ω discharge path active during shutdown. |
| EPAD (Pin 9) | Exposed thermal pad | Electrically and thermally connected to PGND; requires ≥4 vias to inner ground plane for optimal θJC (7°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity. |
| 2MHz fixed-frequency operation | Enables use of sub-2.2µH inductors and tight-layout POL designs without sacrificing transient response. |
| Integrated soft-start (1ms) | Prevents inrush current and output overshoot during power-up; configurable via external capacitor if needed. |
| 100% duty cycle support (at 1MHz only) | Permits dropout operation down to VIN ≈ VOUT, critical for battery-powered systems near end-of-life. |
| Negative current protection | Detects -1.5A valley inductor current for two consecutive cycles, preventing reverse conduction damage. |
| Internal compensation network | Reduces external component count; 27pF/200kΩ RC network provides stable loop response across loads. |
Applications
| Industrial Sensor Node | Telecom Line Card |
|---|---|
Use Scenario: Powering low-power MCU, ADC, and wireless transceiver in sealed environmental sensor housing. IC Role / Device Role / Timing Role: Primary 1.8V/2A POL regulator supplying core logic and analog front-end. Use Value: 2MHz operation minimizes inductor size for conformal coating compatibility; -40°C to +125°C rating ensures reliability in uncontrolled enclosures. |
Use Scenario: Generating 3.3V rail for SERDES interfaces and management processors on high-density line cards. IC Role / Device Role / Timing Role: Secondary buck converter downstream of intermediate bus, replacing discrete controller+MOSFET solutions. Use Value: Integrated PMOS/NMOS stage achieves >92% efficiency at 2A/3.3V, reducing board-level heat density vs. discrete alternatives. |
| Medical Point-of-Care Monitor | Gaming Console SoC Auxiliary Rail |
Use Scenario: Providing clean, regulated 1.2V supply to imaging processor in portable ultrasound device. IC Role / Device Role / Timing Role: Low-noise synchronous buck converter with tight output voltage tolerance (±1%) for analog signal chain integrity. Use Value: 0.6V feedback reference and internal error amplifier enable precise 1.2V output with minimal resistor tolerance impact. |
Use Scenario: Delivering dynamic 1.1V/2A supply to GPU voltage domain during variable workload states. IC Role / Device Role / Timing Role: Fast-transient POL regulator responding to SoC load steps within 10µs. Use Value: Peak current-mode control and 2MHz switching yield <20mV output deviation under 2A step load, preserving GPU stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 2.5V–5.5V VIN, 2A, 2.25MHz, 0.6V VFB, 1.2mm×1.6mm QFN-8 | Smaller footprint but lower max junction temp (+125°C vs. +125°C); no 100% duty cycle mode | Select for ultra-compact layouts where thermal margin exceeds 125°C ambient; verify PG timing against system sequencing. |
| MP2143GJ-Z | 2.5V–5.5V VIN, 2A, 2MHz, 0.6V VFB, 8-pin 2mm×2mm TQFN | Similar specs but lacks negative current protection and has higher typical quiescent current (25µA shutdown vs. 1.2µA) | Choose when cost sensitivity outweighs need for valley-current fault detection; confirm thermal derating matches ISL80020AFRZ-T7A curve. |
Compared with TPS6286418RTER and MP2143GJ-Z, the ISL80020AFRZ-T7A offers superior thermal robustness (150°C shutdown with 25°C hysteresis), integrated negative current protection, and proven 2A performance across -40°C to +125°C ambient-making it preferred for mission-critical industrial and medical POL applications.
Availability
ISL80020AFRZ-T7A is available at Aetrix Electronics and suitable for industrial sensor nodes, telecom line cards, medical point-of-care monitors, and gaming console SoC auxiliary rails requiring stable component supply across extended temperature ranges.
Supply support for ISL80020AFRZ-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 processing, analog, power, and connectivity solutions.
The ISL80020AFRZ-T7A belongs to Renesas' high-efficiency monolithic 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 ISL80020AFRZ-T7A can deliver full 2A output current?
The ISL80020AFRZ-T7A delivers full 2A output current up to +85°C ambient temperature when mounted on a PCB with adequate thermal relief (≥4 vias to PGND plane). Above +85°C, output current must be derated per Figure 27 in FN6692 to maintain junction temperature ≤+125°C. At +100°C ambient, maximum sustainable load is approximately 1.5A for typical 5V input/1.8V output conditions.
Does ISL80020AFRZ-T7A support 100% duty cycle operation, and under what conditions?
The ISL80020AFRZ-T7A supports 100% duty cycle operation only when configured for 1MHz switching frequency-not at its rated 2MHz. This feature allows dropout operation (VOUT ≈ VIN) in battery-powered systems nearing end-of-life. The 2MHz variant (ISL80020AFRZ-T7A) does not enable 100% duty cycle; attempting to force it may cause regulation loss or instability.
How is the output voltage programmed on ISL80020AFRZ-T7A, and what is the minimum recommended feedback resistor value?
Output voltage is set using a resistor divider from VOUT to FB, with R2 connected to GND and R1 from VOUT to FB. Using Equation 5 (R1 = R2 × (VOUT/VFB − 1)), and VFB = 0.600V, a typical R2 = 100kΩ yields R1 = 200kΩ for 1.8V output. Minimum R2 is 10kΩ to limit VFB bias current error; values below increase sensitivity to leakage and noise.
What protection features are integrated into ISL80020AFRZ-T7A, and how do they behave during fault conditions?
ISL80020AFRZ-T7A integrates overcurrent protection (OCP), thermal shutdown (+150°C), negative current detection (-1.5A valley), short-circuit protection (SCP via VFB <0.3V), and power-good monitoring. During OCP, the high-side FET turns off immediately and resumes only next cycle. Thermal shutdown halts all switching until junction cools to +125°C. SCP reduces fSW to 1/3 during short events. All faults pull PG low until cleared by soft-start restart.
Can ISL80020AFRZ-T7A be used with ceramic output capacitors, and what ESR considerations apply?
Yes, ISL80020AFRZ-T7A is optimized for low-ESR ceramic output capacitors (X5R/X7R). Its current-mode control loop remains stable with ESR as low as 5mΩ. Equation 6 (VOUTripple = ΔI / (8 × fSW × COUT)) governs ripple calculation. Due to DC bias derating, actual capacitance may be ~50% of rated value-select 22µF rated parts to ensure ≥10µF effective capacitance at bias.
ISL80020AFRZ-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:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80020AFRZ-T7A FAQ
1.How can I place an order for ISL80020AFRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80020AFRZ-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 ISL80020AFRZ-T7A reliable?
The price and inventory of ISL80020AFRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80020AFRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80020AFRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80020AFRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80020AFRZ-T7A?
ISL80020AFRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80020AFRZ-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 ISL80020AFRZ-T7A?
For technical support, including ISL80020AFRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80020AFRZ-T7A requirements.
6.How does Aetrix verify that ISL80020AFRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80020AFRZ-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 ISL80020AFRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80020AFRZ-T7A?
All ISL80020AFRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80020AFRZ-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 ISL80020AFRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80020AFRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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