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Renesas ISL8002IRZ-T
- Part No.:
- ISL8002IRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL8002IRZ-T.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
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Product details
Overview
ISL8002IRZ-T from Intersil is a monolithic synchronous buck regulator 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 supports 100% duty cycle operation (200mV dropout at 2A), internal/external compensation, and PFM/PWM light-load mode selection - deployed in FPGA core voltage regulation and LCD panel power supplies.
For engineers reviewing the ISL8002IRZ-T datasheet, ISL8002IRZ-T pinout, ISL8002IRZ-T application, or ISL8002IRZ-T equivalent, key selection criteria include verified 1MHz fixed-frequency operation, 2A output capability with thermal shutdown and overcurrent protection, compact 2mm×2mm TDFN package with exposed pad, and compatibility with low-ESR ceramic output capacitors for high-efficiency point-of-load conversion.
Technical Context
The ISL8002IRZ-T uses peak current-mode control with slope compensation (900mV/Ts) for stable loop dynamics across wide load and input ranges. Its integrated PMOS high-side switch eliminates boot capacitor requirements, simplifying layout and reducing BOM count.
It implements dual-mode operation: PWM ensures constant frequency and low noise under heavy loads, while PFM reduces quiescent current to 35µA at light loads by skipping pulses - enabling >95% peak efficiency and extended battery runtime in portable systems.
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 LDO pre-regulation. |
| IOUT Max | 2A continuous - sufficient for FPGA I/O banks, DDR memory termination, and mid-power microcontroller cores. |
| Switching Frequency | 1MHz (fixed) - enables use of sub-3.3µH inductors and reduces EMI filter size vs lower-frequency alternatives. |
| Feedback Voltage | 0.600V ±5mV - sets precise output voltage via resistor divider; supports down to 0.6V output for modern low-voltage logic. |
| Quiescent Current | 35µA (PFM, no load) - minimizes standby power loss in always-on subsystems like real-time clocks or sensor interfaces. |
| Duty Cycle Range | 0–100% - allows operation with minimal input-to-output differential (e.g., 2.7V→2.5V), critical for battery-end-of-life scenarios. |
| Thermal Shutdown | 150°C with 25°C hysteresis - protects against sustained overload or poor PCB thermal design without requiring external thermal monitoring. |
Pinout & Package
Package: 8-pin 2mm×2mm TDFN with exposed thermal pad (T-PAD), RoHS-compliant matte tin finish, MSL3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Supplies both power stage and internal bias regulator; requires ≥10µF local ceramic decoupling to PGND. |
| EN (Pin 2) | Enable control | Active-high logic input (1.4V threshold); pulls PHASE low via 100Ω when disabled to discharge output. |
| MODE (Pin 3) | Operation mode select | Tied to VIN for PWM, grounded for PFM; internal 1MΩ pull-down prevents floating state. |
| PG (Pin 4) | Power-good indicator | Open-drain output with 5MΩ internal pull-up; asserts low during soft-start or if FB falls outside 85–120% regulation window. |
| COMP (Pin 5) | Error amplifier output | Configures internal compensation (tied to VIN) or external RC network for custom loop response. |
| FB (Pin 6) | Voltage feedback input | Connects to resistor divider; monitors output for regulation, UVLO, and OVP functions. |
| PGND (Pin 7) | Power/analog ground | Common return for power stage and analog circuits; must connect directly to PCB ground plane. |
| PHASE (Pin 8) | Switching node | Drives external inductor; discharged through 100Ω resistor during disable to prevent output voltage hold-up. |
| T-PAD (Pin 9) | Thermal & power ground | Exposed metal pad tied to PGND; requires multiple thermal vias to inner ground layers for θJA = 71°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS/NMOS FETs | rDS(ON) = 117mΩ (HS), 86mΩ (LS) at 5V - eliminates external MOSFETs and gate drivers, reducing solution footprint to <0.10in². |
| No boot capacitor required | PMOS high-side architecture - removes need for flying capacitor and associated routing constraints, simplifying layout. |
| 100% duty cycle support | 200mV dropout at 2A - maintains regulation even when VIN drops close to VOUT, extending usable battery range. |
| Selective PFM/PWM mode | Automatic transition at ~675mA (PFM→PWM) and ~121mA (PWM→PFM) - balances efficiency and noise across full load range. |
| Comprehensive protection suite | OCP (3–4A peak), SCP, thermal shutdown, UVLO (2.7V rising), OVP/UVP on PG - enables robust operation without external supervision ICs. |
Applications
| Application 1 | Application 2 |
|---|---|
Use Scenario: Powering FPGA core voltage rails in compact embedded systems with strict thermal and space constraints. IC Role / Device Role / Timing Role: Primary synchronous buck converter regulating 0.8V–1.2V core supply with fast transient response to logic switching currents. Use Value: 1MHz operation enables small 1.2µH inductor; 95% peak efficiency at 1.2V/2A reduces heat dissipation in dense BGA packages. | Use Scenario: Supplying 1.8V/2A to LCD timing controller and source driver ICs in industrial display modules. IC Role / Device Role / Timing Role: Point-of-load regulator converting 3.3V system rail to stable 1.8V display interface voltage. Use Value: 100% duty cycle capability maintains regulation during 3.3V rail sag; PFM mode extends backlight dimming circuit battery life. |
| Application 3 | Application 4 |
Use Scenario: Generating 2.5V/2A for high-speed USB PHY and SerDes circuitry in portable media devices. IC Role / Device Role / Timing Role: Low-noise, high-efficiency DC/DC converter with PWM mode selected to suppress RF interference near sensitive analog receivers. Use Value: Fixed 1MHz switching frequency avoids AM radio band; integrated compensation ensures stable loop without tuning. | Use Scenario: Providing 0.9V/2A to ARM Cortex-A series application processors in automotive infotainment head units. IC Role / Device Role / Timing Role: Main SoC core regulator with thermal shutdown and overvoltage protection meeting AEC-Q100 stress requirements. Use Value: -40°C to +85°C operating range and 150°C thermal shutdown ensure reliability in under-dash environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8002AIRZ-T | 2MHz switching frequency, identical 2A rating and package - higher frequency enables smaller inductors but increases switching losses at full load. | Better suited for ultra-compact designs where board area is more critical than peak efficiency at 2A. | Select ISL8002AIRZ-T when minimizing inductor size (<1.0µH) is prioritized over 1MHz EMI profile or maximum efficiency at high load. |
| TPS62231DRVR | 2A, 3MHz, 2.05V–6.5V input, 0.6V reference, but uses NMOS/NMOS topology requiring boot capacitor and external compensation. | Lacks integrated PMOS high-side and 100% duty cycle - less suitable for low-VIN applications like single-cell Li-ion end-of-discharge. | Choose TPS62231DRVR only if 3MHz operation is mandatory and boot capacitor integration is acceptable in layout. |
Compared with ISL8002AIRZ-T, the ISL8002IRZ-T trades higher-frequency EMI for superior light-load efficiency and simpler layout; versus TPS62231DRVR, it offers boot-capacitor-free operation and guaranteed 100% duty cycle - critical for battery-powered systems with tight VIN–VOUT margins.
Availability
ISL8002IRZ-T is available at Aetrix Electronics and suitable for FPGA power, LCD panel supplies, and USB PHY regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8002IRZ-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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.
The ISL8002 product line delivers compact, high-efficiency synchronous buck regulators targeting space-constrained, battery-sensitive applications such as portable displays, set-top boxes, and FPGA power domains.
FAQ
What is the maximum continuous output current of the ISL8002IRZ-T?
The ISL8002IRZ-T delivers up to 2A of continuous output current across its full operating temperature range (-40°C to +85°C), as confirmed in Table 1 and Absolute Maximum Ratings of the FN7888 datasheet. This rating assumes proper PCB thermal design with the exposed T-PAD connected to a solid ground plane via multiple thermal vias.
Does the ISL8002IRZ-T require an external boot capacitor?
No, the ISL8002IRZ-T does not require an external boot capacitor because it integrates a PMOS high-side MOSFET. This architecture eliminates the need for a charge pump or flying capacitor, simplifying layout and reducing component count compared to NMOS-based synchronous buck regulators.
What protection features are built into the ISL8002IRZ-T?
The ISL8002IRZ-T includes overcurrent protection (3–4A peak limit), short-circuit protection, thermal shutdown (150°C with 25°C hysteresis), input undervoltage lockout (2.7V rising threshold), and output overvoltage/undervoltage detection monitored via the PG pin - all implemented internally without external components.
Can the ISL8002IRZ-T operate with 100% duty cycle, and under what conditions?
Yes, the ISL8002IRZ-T supports 100% duty cycle operation at its 1MHz version (including ISL8002IRZ-T), achieving 200mV dropout at 2A output current. This enables regulation when VIN approaches VOUT - essential for maintaining system operation during battery voltage sag in portable equipment.
How does the MODE pin configure light-load operation on the ISL8002IRZ-T?
The MODE pin selects between PWM (tie to VIN or >2.5V) and PFM (tie to GND or ≤0.4V) modes. In PFM, the ISL8002IRZ-T skips pulses to reduce switching losses, lowering quiescent current to 35µA; in PWM, it maintains constant 1MHz frequency for predictable EMI and faster transient response.
ISL8002IRZ-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:
- 2A
- 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)
ISL8002IRZ-T FAQ
1.How can I place an order for ISL8002IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8002IRZ-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 ISL8002IRZ-T reliable?
The price and inventory of ISL8002IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8002IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL8002IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8002IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8002IRZ-T?
ISL8002IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8002IRZ-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 ISL8002IRZ-T?
For technical support, including ISL8002IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8002IRZ-T requirements.
6.How does Aetrix verify that ISL8002IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8002IRZ-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 ISL8002IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL8002IRZ-T?
All ISL8002IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8002IRZ-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 ISL8002IRZ-T part is unused and in its original packaging.
Return procedure for ISL8002IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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