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Renesas ISL8002AIRZ-T
- Part No.:
- ISL8002AIRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL8002AIRZ-T.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:407
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Product details
Overview
ISL8002AIRZ-T from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC regulator delivering up to 2A continuous output current from a 2.7V–5.5V input, operating at 2MHz switching frequency with internal/external compensation options and selectable PFM/PWM light-load operation. It integrates low-rDS(ON) PMOS/NMOS FETs, eliminates boot capacitor need, and supports 100% duty cycle at 1MHz (not applicable here), targeting FPGA core power and compact point-of-load applications.
For engineers reviewing the ISL8002AIRZ-T datasheet, ISL8002AIRZ-T pinout, ISL8002AIRZ-T application, or ISL8002AIRZ-T equivalent, key selection criteria include its 2MHz fixed-frequency PWM/adaptive PFM operation, 0.6V feedback reference, thermal/overcurrent protection, and 2mm×2mm TDFN-8 package with exposed thermal pad for high-density board layouts.
Technical Context
The ISL8002AIRZ-T uses peak current-mode control with slope compensation (900mV/Ts) for stability across wide duty cycles and load transients. Its 2MHz nominal switching frequency enables sub-2.2µH inductor selection and reduces output ripple without compromising transient response.
It features dual-mode operation: forced PWM (MODE = VIN) ensures constant frequency and low EMI, while PFM (MODE = GND) reduces quiescent current to 35µA at no load-critical for battery-powered systems. Protection includes overcurrent (3.5A typ), thermal shutdown (150°C), UVLO (2.7V rising), and VOUT overvoltage/undervoltage monitoring via FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports FPGA core rails and multi-rail SoC supplies without external current boosting. |
| Switching Frequency | 2MHz ±15% - enables use of ≤2.2µH inductors and <22µF ceramic output capacitance for space-constrained designs. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion, 3.3V/5V system rails, and USB-powered devices. |
| Feedback Reference | 0.600V ±5mV - sets output voltage via resistor divider (e.g., 200kΩ/100kΩ for 1.8V); tight tolerance minimizes output error across temperature. |
| Quiescent Current | 35µA (PFM, 2MHz) - extends battery runtime in always-on subsystems like sensor hubs or standby logic. |
| Efficiency Peak | 95% at 1.8V/2A, 3.3VIN, PFM - reduces thermal load in sealed enclosures and lowers system cooling requirements. |
| Protection Features | OCP (3.5A typ), thermal shutdown (150°C), UVLO (2.7V), OVP/UVP on FB - enables robust operation without external supervision circuitry. |
Pinout & Package
ISL8002AIRZ-T is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (Pin 9, connected to PGND). The compact footprint occupies <0.10 in² and supports high thermal dissipation via PCB vias to internal ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply rail | Supplies both power stage and internal LDO; requires ≥10µF ceramic decoupling close to pin for stability. |
| EN (Pin 2) | Enable control input | Active-high logic (≥1.4V); internal 100Ω discharge path to PHASE when disabled for controlled output ramp-down. |
| MODE (Pin 3) | Light-load operation mode select | High = forced PWM (low noise); low = PFM (high efficiency); internal 1MΩ pull-down prevents floating state. |
| PG (Pin 4) | Power-good open-drain output | Asserts low during soft-start and if VOUT deviates >5% from regulation; 5MΩ internal pull-up simplifies interface. |
| COMP (Pin 5) | Error amplifier output | Tied to VIN for internal compensation; connected to RC network to GND for external loop tuning (e.g., stability under varying loads). |
| FB (Pin 6) | Feedback input | Senses output voltage via resistor divider; also used by PG, UVLO, and OVP circuits - critical for accuracy and protection timing. |
| PGND (Pin 7) | Power and analog ground | Must connect directly to PCB ground plane; shared return for high-current switching paths and sensitive analog circuits. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt current; discharged via 100Ω when disabled to prevent output voltage hold-up. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity in ultra-compact designs. |
| Selectably optimized light-load efficiency | 35µA quiescent current in PFM mode extends battery life; 10mA in PWM mode maintains low-noise operation for noise-sensitive analog sections. |
| Integrated protection suite | Single-chip solution for overcurrent (3.5A), thermal shutdown (150°C), input UVLO (2.7V), and output OVP/UVP - removes need for discrete supervisors. |
| Flexible compensation architecture | Internal RC (27pF/200kΩ) or external network allows tuning for diverse output capacitor ESR and load step profiles. |
| 2mm×2mm TDFN with thermal pad | Thermal resistance θJA = 71°C/W enables 2A operation at +85°C ambient without heatsink, ideal for stacked PCBs and handheld devices. |
Applications
| Application 1 | Application 2 |
|---|---|
Use Scenario: Powering FPGA core voltage (e.g., 0.9V–1.2V) in portable test equipment with strict size constraints. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing tightly regulated, low-noise core supply with fast transient response to logic switching events. Use Value: 2MHz operation allows 1.2µH inductor and 22µF total output capacitance, shrinking total solution area to <0.10 in² while maintaining <±1% output regulation under 2A load steps. | Use Scenario: Generating 1.8V I/O supply for embedded ARM-based industrial controllers operating from 3.3V backplane. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load converter with integrated protections for unattended 24/7 operation. Use Value: 95% peak efficiency at 1.8V/2A reduces heat generation by >30% vs. linear regulators, enabling fanless enclosure design and extending component lifetime. |
| Application 3 | Application 4 |
Use Scenario: Supplying 2.5V analog front-end in medical sensor modules powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-quiescent-current buck regulator enabling long standby time while supporting burst-mode active measurement cycles. Use Value: 35µA PFM quiescent current extends battery life to >1 year in sleep mode; fast 1ms soft-start prevents brownout during wake-up transitions. | Use Scenario: Regulating 3.3V supply for HDMI transmitter ICs in set-top boxes where EMI must meet CISPR-22 Class B limits. IC Role / Device Role / Timing Role: Fixed-frequency 2MHz PWM-mode regulator minimizing fundamental switching noise in sensitive RF bands. Use Value: Forced PWM operation eliminates frequency variation, simplifying EMI filter design and ensuring consistent noise spectrum below 30MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYT | 2MHz, 2A, 2.05V–6.5V input, 0.6V reference, but uses NMOS/NMOS topology requiring boot capacitor; 25µA IQ in PFM. | Lacks PMOS high-side; higher external component count; slightly wider input range but lower max efficiency (93%) at 1.8V/2A. | Choose if input exceeds 5.5V or boot capacitor presence is acceptable for layout flexibility. |
| RT7297BZSP | 2MHz, 2A, 2.5V–5.5V input, 0.6V reference, integrated MOSFETs, but no PFM mode; 30µA shutdown current only. | Fixed PWM-only operation increases light-load power loss; lacks adaptive mode switching, limiting battery runtime in intermittent-use devices. | Prefer for noise-critical applications where constant frequency is mandatory and battery life is secondary. |
Compared with TPS62231DRYT and RT7297BZSP, the ISL8002AIRZ-T uniquely combines PMOS high-side integration (no boot cap), dual PFM/PWM mode selection, and 2mm×2mm footprint - making it optimal for space- and energy-constrained portable electronics where BOM reduction and standby efficiency are prioritized.
Availability
ISL8002AIRZ-T is available at Aetrix Electronics and suitable for FPGA power, industrial embedded controllers, and portable medical sensors requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for ISL8002AIRZ-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 acquired Intersil in 2017 and continues to support its high-performance analog and power management portfolio for industrial, automotive, and computing applications.
The ISL8002AIRZ-T belongs to Renesas' compact synchronous buck regulator product line, designed specifically for space-constrained, high-efficiency point-of-load conversion in battery-powered and thermally limited systems.
FAQ
What is the maximum output current capability of the ISL8002AIRZ-T?
The ISL8002AIRZ-T delivers up to 2A of continuous output current across its full operating temperature range (-40°C to +85°C), verified per datasheet Table 1 and Absolute Maximum Ratings. This rating assumes proper PCB thermal design with vias to the PGND plane under the exposed thermal pad. Derating applies above +85°C ambient per thermal resistance data (θJA = 71°C/W).
Does the ISL8002AIRZ-T require an external boot capacitor?
No, the ISL8002AIRZ-T does not require an external boot capacitor because it integrates a PMOS high-side switch. This architecture eliminates the need for charge-pump circuitry or external capacitors typically required by NMOS-based high-side drivers, reducing BOM count and PCB area. This feature is explicitly confirmed in the datasheet's "Features" section and functional description.
How does the MODE pin affect light-load efficiency and noise performance of the ISL8002AIRZ-T?
The MODE pin selects between PFM (pin grounded) and PWM (pin tied to VIN) operation. In PFM mode, the ISL8002AIRZ-T reduces switching frequency at light loads, achieving 35µA quiescent current and maximizing battery life. In PWM mode, it maintains constant 2MHz operation, minimizing conducted EMI and improving noise immunity - critical for analog signal chains. Both modes are fully supported and characterized in the datasheet's performance curves.
What is the feedback reference voltage and tolerance for the ISL8002AIRZ-T?
The ISL8002AIRZ-T has a precision feedback reference voltage of 0.600V with a tolerance of ±5mV (±0.83%) over -40°C to +125°C junction temperature, as specified in the Electrical Specifications table (VFB MIN/MAX). This tight tolerance ensures accurate output voltage setting across temperature and load, enabling reliable 1.8V or 2.5V rail generation using standard 1% resistors.
Can the ISL8002AIRZ-T operate with 100% duty cycle?
No, the ISL8002AIRZ-T (2MHz version) does not support 100% duty cycle operation. That feature is explicitly reserved for the 1MHz variants (ISL8002IRZ-T and ISL80019IRZ-T), as stated in the datasheet's "100% Duty Cycle (1MHz Version)" section on page 18. The ISL8002AIRZ-T's minimum off-time and oscillator architecture limit its maximum duty cycle to approximately 90% at 2MHz, sufficient for most 2.7V–5.5V input to 0.6V–VIN output conversions.
ISL8002AIRZ-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:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL8002AIRZ-T FAQ
1.How can I place an order for ISL8002AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8002AIRZ-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 ISL8002AIRZ-T reliable?
The price and inventory of ISL8002AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8002AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL8002AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8002AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8002AIRZ-T?
ISL8002AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8002AIRZ-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 ISL8002AIRZ-T?
For technical support, including ISL8002AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8002AIRZ-T requirements.
6.How does Aetrix verify that ISL8002AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8002AIRZ-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 ISL8002AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL8002AIRZ-T?
All ISL8002AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8002AIRZ-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 ISL8002AIRZ-T part is unused and in its original packaging.
Return procedure for ISL8002AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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