My Inquiry
My Account
Renesas ISL80020IRZ-T
- Part No.:
- ISL80020IRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80020IRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,621
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL80020IRZ-T 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-T datasheet, ISL80020IRZ-T pinout, ISL80020IRZ-T application, or ISL80020IRZ-T 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-T 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 by using a PMOS high-side switch.
It integrates low-rDS(ON) MOSFETs (117mΩ PMOS / 86mΩ NMOS at VIN=5V), supports soft-start (1ms ramp), and features power-good monitoring with ±15% VFB window and 5MΩ internal pull-up on PG. Protection includes overcurrent (3.18A typ), thermal shutdown (150°C), and negative current detection (−1.5A over two cycles).
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 rails without external LDO pre-regulation. |
| 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-frequency alternatives. |
| VFB Reference | 0.600V ±6mV - allows precise output voltage setting down to 0.6V via resistor divider; supports 1.2V, 1.5V, 1.8V, 2.5V, 3.3V outputs. |
| Efficiency | Up to 95% peak - achieved via integrated low-rDS(ON) MOSFETs and optimized gate drive, minimizing conduction and switching losses. |
| Thermal Shutdown | 150°C with 25°C hysteresis - ensures safe recovery after overload or poor PCB thermal design without latch-up. |
| Package | 8-pin 2mm×2mm TDFN with exposed pad - occupies <64mm² board area; EPAD must be connected to PGND for electrical integrity and thermal performance. |
Pinout & Package
The ISL80020IRZ-T is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (EPAD, Pin 9), RoHS-compliant and MSL-3 rated. The EPAD must be soldered to a dedicated PGND copper plane with ≥4 thermal vias for optimal junction temperature control.
| 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 enables when voltage exceeds 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 feedback path from noisy power ground currents. |
| PG (Pin 4) | Power-good open-drain output | Asserts high-Z when output is within ±15% of regulation; pulled low during soft-start, fault, or disable; includes 5MΩ internal pull-up. |
| FB (Pin 5) | Feedback voltage sense node | Connects to resistor divider midpoint; monitors regulated output; used by UV/OV protection and PG 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 | Main ground connection for inductor, input/output capacitors, and EPAD; requires low-impedance plane connection. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt switching current; internal 100Ω discharge path activates during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity in compact designs. |
| 100% duty cycle operation | Enables dropout operation down to VIN ≈ VOUT, critical for battery-powered systems near end-of-discharge. |
| Integrated soft-start and soft-stop | 1ms controlled ramp-up prevents inrush current; internal 100Ω discharge path safely collapses output during shutdown. |
| Negative current protection | Detects −1.5A valley inductor current over two cycles to prevent reverse conduction and potential damage during light-load transitions. |
| Internal compensation network | Fixed 27pF/200kΩ RC network eliminates external compensation components, simplifying design and improving consistency. |
Applications
| FPGA Core Power Supply | Industrial Sensor Node |
|---|---|
|
Use Scenario: Providing stable 1.2V/1.5V core voltage to Xilinx Artix-7 or Intel MAX 10 FPGA under dynamic load conditions. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with fast transient response (1MHz) and tight output regulation (±1% typical over line/load/temp). Use Value: Maintains FPGA functional integrity during burst-mode processing; 95% peak efficiency minimizes thermal load in sealed enclosures. |
Use Scenario: Powering ultra-low-power ARM Cortex-M4-based sensor nodes with intermittent RF transmission (BLE/Zigbee). IC Role / Device Role / Timing Role: High-efficiency POL converter enabling >10-year battery life; 1.2µA shutdown current extends shelf life. Use Value: 100% duty cycle operation sustains regulation down to 2.7V input, maximizing usable battery capacity from 3.0V Li-SOCl₂ cells. |
| Telecom Line Card LDO Replacement | Medical Patient Monitor Auxiliary Rail |
|
Use Scenario: Replacing inefficient linear regulators on 5V backplane-fed line cards requiring 3.3V/2A for PHY and SerDes interfaces. IC Role / Device Role / Timing Role: Step-down converter with low-noise PWM operation and integrated EMI mitigation (small inductor, tight power loop). Use Value: Reduces heat generation by >70% vs. LDO; 2mm×2mm footprint saves PCB area for dense interface routing. |
Use Scenario: Generating isolated 2.5V/1.8V rails for precision ADCs and low-noise op-amps in Class II medical devices. IC Role / Device Role / Timing Role: Regulator with overvoltage/undervoltage lockout (±15% PG window) and thermal shutdown for safety-critical subsystems. Use Value: Ensures signal integrity and compliance with IEC 60601-1 leakage current limits via low quiescent current (7mA typ) and robust fault handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 2A, 3MHz switching frequency; 2.05V–6.5V VIN; 0.6V VFB; requires external boot capacitor. | Better transient response at higher frequencies but increased EMI risk; less suitable for noise-sensitive analog sections. | Choose for ultra-fast load steps where 3MHz improves regulation; verify layout for EMI compliance and add boot cap. |
| MP2143GJ-Z | 2A, 2MHz; 2.5V–5.5V VIN; 0.6V VFB; integrated boot diode; no 100% duty cycle mode. | Lacks dropout capability below VIN–VOUT margin; higher quiescent current (25µA shutdown vs. 1.2µA for ISL80020IRZ-T). | Select when 2MHz operation is mandatory and input never drops below 2.7V; avoid in battery-end-of-life scenarios. |
Compared with TPS62231DRVR and MP2143GJ-Z, the ISL80020IRZ-T offers unique 100% duty cycle operation and boot-capacitor-free design-critical for space-constrained, battery-depleting, or thermally limited applications-while maintaining competitive efficiency and protection coverage.
Availability
ISL80020IRZ-T is available at Aetrix Electronics and suitable for industrial sensor nodes, telecom line cards, and medical patient monitor auxiliary rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL80020IRZ-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 acquired Intersil in 2017 and maintains full technical and supply chain continuity for its high-performance analog and power management portfolio.
The ISL80020IRZ-T belongs to Renesas' compact synchronous buck converter family, designed specifically for space-constrained, high-efficiency point-of-load applications in industrial, telecom, and medical equipment where thermal performance and reliability are critical.
FAQ
What is the maximum continuous output current of the ISL80020IRZ-T?
The ISL80020IRZ-T delivers up to 2A continuous output current across its full operating temperature range (−40°C to +125°C), verified per datasheet Table 1 and Electrical Specifications on page 6. Derating applies above +85°C ambient depending on PCB thermal design; Figure 27 shows output current vs. temperature curves for common output voltages.
Does the ISL80020IRZ-T require an external boot capacitor?
No, the ISL80020IRZ-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 and layout complexity-confirmed in the "Features" section and Theory of Operation on page 12 of FN6692 Rev 3.00.
What protection features are integrated into the ISL80020IRZ-T?
The ISL80020IRZ-T integrates overcurrent protection (trip threshold 3.18A typ), thermal shutdown (150°C with 25°C hysteresis), negative current protection (−1.5A valley over two cycles), input undervoltage lockout (2.7V rising threshold), output overvoltage/undervoltage monitoring via PG, and short-circuit protection that reduces switching frequency during fault events-all detailed in the "Features" and "Electrical Specifications" sections of FN6692.
Can the ISL80020IRZ-T operate at 100% duty cycle, and under what conditions?
Yes, the ISL80020IRZ-T supports 100% duty cycle operation-but only at its 1MHz switching frequency (not at 2MHz). This enables dropout regulation when VIN approaches VOUT, extending usable battery voltage range. The condition is explicitly stated in the datasheet first paragraph and confirmed in Table 1 and "Features" list on page 1.
What is the recommended output capacitor configuration for the ISL80020IRZ-T?
Renesas recommends ≥22µF X5R or X7R ceramic output capacitance, placed close to the PHASE and PGND pins. Due to DC bias derating, actual in-circuit capacitance may be ~50% of rated value; consult manufacturer's bias-vs-capacitance curves. Equation 6 and 7 on page 14 provide ripple-based sizing, while Equation 8 addresses transient overshoot requirements-both validated on the ISL80020EVAL1Z evaluation board.
ISL80020IRZ-T 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80020IRZ-T FAQ
1.How can I place an order for ISL80020IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80020IRZ-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 ISL80020IRZ-T reliable?
The price and inventory of ISL80020IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80020IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80020IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80020IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80020IRZ-T?
ISL80020IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80020IRZ-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 ISL80020IRZ-T?
For technical support, including ISL80020IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80020IRZ-T requirements.
6.How does Aetrix verify that ISL80020IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80020IRZ-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 ISL80020IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80020IRZ-T?
All ISL80020IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80020IRZ-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 ISL80020IRZ-T part is unused and in its original packaging.
Return procedure for ISL80020IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL80020IRZ-T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
