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Renesas ISL8009AIRZ-T7A
- Part No.:
- ISL8009AIRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
ISL8009AIRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:215
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Product details
Overview
ISL8009AIRZ-T7A from Intersil is a monolithic synchronous buck DC/DC regulator delivering up to 1.5A continuous output current with 0.8V minimum output voltage, 1.6MHz switching frequency, and 17µA quiescent current in PFM mode-designed for powering µC/FPGA core rails in portable instrumentation and test equipment.
For engineers reviewing the ISL8009AIRZ-T7A datasheet, ISL8009AIRZ-T7A pinout, ISL8009AIRZ-T7A application, or ISL8009AIRZ-T7A equivalent, this page delivers verified technical context, validated pin functions, confirmed efficiency behavior across load and input voltage, real-world soft-start and POR timing, and two rigorously cross-checked alternative regulators for low-voltage POL designs.
Technical Context
The ISL8009AIRZ-T7A employs current-mode PWM control with internal slope compensation and dual MOSFETs (P-Channel ON-resistance ≤0.22Ω at 5.5V, N-Channel ≤0.22Ω) to ensure fast transient response and loop stability at 1.6MHz. It supports both forced PWM and automatic PFM/PWM operation via the SKIP pin.
Its 2ms Power-On-Reset timer outputs a delayed power-good signal referenced to VFB regulation (0.8V ±2%), while RSI enables external reset. The device integrates digital soft-start, 100Ω soft-discharge path, peak current limiting (2.1A typ), and thermal shutdown at 140°C with 25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous-supports FPGA core rail loads without external current boosting. |
| Input Voltage Range | 2.7V to 5.5V-compatible with single Li+ cell, three NiMH cells, or regulated 5V supply. |
| Quiescent Current | 17µA in PFM mode-extends battery life in always-on portable instruments. |
| Switching Frequency | 1.6MHz (1.35–1.75MHz range)-enables use of compact 2.2µH inductors and 20µF ceramic capacitors. |
| Feedback Reference | 0.8V ±2.4% over temp/load/line-ensures ±3% output accuracy for 1.2V–3.3V adjustable rails. |
| Duty Cycle Max | 90%-delivers <400mV dropout at 1.5A, critical for low-VIN battery sag conditions. |
| Shutdown Current | 0.1µA typ-minimizes system standby leakage in power-sequenced architectures. |
Pinout & Package
ISL8009AIRZ-T7A is housed in an 8-lead 2mm × 3mm DFN package (L8.2x3) with exposed thermal pad requiring direct connection to GND for electrical integrity and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail | Accepts 2.7–5.5V; requires local 10µF ceramic decoupling to GND. |
| EN | Enable control input | Active-high logic; drives regulator on/off and activates 100Ω LX-to-GND discharge path when low. |
| POR | Power-On-Reset output | Open-drain 2ms delayed power-good signal; resets on RSI low pulse. |
| SKIP | Mode selection input | High = auto PFM/PWM; low = forced PWM-determines light-load efficiency vs. EMI trade-off. |
| LX | Switching node | Connects to inductor; carries high di/dt; must minimize loop area for EMI control. |
| GND | System ground reference | Return path for VIN, LX, VFB, RSI, POR, and exposed pad-requires low-impedance plane. |
| VFB | Feedback input | Senses output via resistor divider; regulates to 0.8V reference; bias current ≤0.1µA. |
| RSI | Reset input | Active-low asynchronous reset for POR timer; must be pulled to GND if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | P-Channel (≤0.22Ω) + N-Channel (≤0.22Ω) reduce BOM count and improve full-load efficiency to 95%. |
| Digital Soft-Start | 1.1ms controlled ramp prevents inrush current and output overshoot during power-up. |
| Overcurrent Protection | Peak current limit at 2.1A with cycle-by-cycle shutdown-protects against shorted output or overload. |
| Thermal Shutdown | 140°C trip with 25°C hysteresis ensures safe recovery after sustained high-power operation. |
| Soft Discharge | 100Ω internal resistor discharges output capacitor when EN is low-prevents backfeed in multi-rail systems. |
Applications
| Portable Instrumentation | Test & Measurement Systems |
|---|---|
Use Scenario: Battery-powered handheld multimeters and oscilloscope probes requiring stable 1.2V/1.5A core supply under varying battery voltage (3.0–4.2V). IC Role / Device Role / Timing Role: Primary POL regulator converting Li+ battery output to FPGA/microcontroller core voltage with tight line/load regulation. Use Value: 17µA quiescent current extends runtime between charges; 90% duty cycle maintains regulation down to 3.0V input. |
Use Scenario: Benchtop power analyzers needing isolated, low-noise 1.8V/1.5A supply for ADC front-end and digital logic. IC Role / Device Role / Timing Role: High-efficiency synchronous buck providing clean, well-regulated rail with minimal thermal footprint on dense PCBs. Use Value: 1.6MHz switching enables small 2.2µH inductor and 20µF X5R caps-reducing board area to <1cm². |
| DC/DC POL Modules | µC/µP & FPGA Power |
Use Scenario: Compact plug-in DC/DC modules for network routers where space-constrained 2mm×3mm footprint is mandatory. IC Role / Device Role / Timing Role: Standalone step-down converter integrated into modular power solution with enable sequencing and POR signaling. Use Value: 2ms POR output synchronizes downstream logic startup; EN pin enables precise power sequencing with other rails. |
Use Scenario: Core voltage supply for ARM Cortex-M7 microcontrollers or Xilinx Artix-7 FPGAs in embedded edge nodes. IC Role / Device Role / Timing Role: Adjustable-output buck regulator delivering 0.8–3.3V with ±3% accuracy across temperature and load. Use Value: Internal compensation eliminates external compensation components; VFB accuracy ensures reliable core voltage margining. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 3.0–17V input, 3A output, 2.5MHz switching, 17µA IQ-higher VIN range but larger 3mm×3mm QFN package. | Better suited for industrial 12V input systems; less optimal for single-cell Li+ due to higher UVLO (2.95V). | Select when input exceeds 5.5V or >1.5A output is required; verify layout compatibility with larger footprint. |
| RT6203BGQW | 2.5–5.5V input, 1.5A output, 1.5MHz switching, 25µA IQ-RoHS-compliant DFN, but lacks integrated POR and RSI functionality. | Requires external POR circuitry for power-good signaling; no programmable reset input for system-level coordination. | Choose for cost-sensitive designs where POR/RSI are not needed; confirm soft-start timing meets system requirements. |
Compared with TPS62130ARGTR and RT6203BGQW, the ISL8009AIRZ-T7A uniquely combines single-cell Li+ compatibility (2.7V UVLO), integrated 2ms POR with RSI reset, and 2mm×3mm footprint-making it optimal for space- and battery-life-constrained portable electronics.
Availability
ISL8009AIRZ-T7A is available at Aetrix Electronics and suitable for portable instrumentation, test and measurement systems, and FPGA power delivery requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8009AIRZ-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
Intersil Corporation (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.
The ISL8009A product line was designed specifically for high-efficiency, low-quiescent-current point-of-load regulation in battery-powered portable electronics-emphasizing small size, light-load efficiency, and integrated protection features.
FAQ
What is the maximum output current capability of the ISL8009AIRZ-T7A?
The ISL8009AIRZ-T7A delivers up to 1.5A continuous output current across its operating temperature range (-40°C to +85°C). This rating is guaranteed under typical conditions (VIN = 5V, TA = +25°C) and supported by internal peak current limiting at 2.1A. Derating applies above +85°C ambient per thermal resistance data (θJA = 55°C/W).
Does the ISL8009AIRZ-T7A require external compensation components?
No, the ISL8009AIRZ-T7A uses internal compensation with a fixed 30pF/300kΩ RC network. No external compensation components are needed-simplifying design and reducing bill-of-materials count. Layout best practices still require minimized power loop area and proper grounding of the exposed thermal pad.
How does the SKIP pin affect efficiency and EMI performance in the ISL8009AIRZ-T7A?
When SKIP is high, the ISL8009AIRZ-T7A operates in automatic PFM/PWM mode-reducing switching frequency at light loads to achieve 17µA quiescent current and maximize battery life. When SKIP is low, it forces fixed 1.6MHz PWM operation, improving EMI predictability and output ripple at the expense of higher light-load IQ.
What is the function of the RSI pin on the ISL8009AIRZ-T7A?
The RSI (Reset Input) pin provides asynchronous reset capability for the internal 2ms Power-On-Reset timer. A low-going pulse on RSI immediately clears the POR output and restarts the 2ms delay once RSI returns high-enabling system-level power sequencing and fault recovery without cycling VIN.
Can the ISL8009AIRZ-T7A operate with a 2.7V input supply?
Yes, the ISL8009AIRZ-T7A supports input voltages as low as 2.7V (UVLO rising threshold = 2.5V min). At 2.7V VIN, it maintains regulation down to 0.8V output with up to 1.5A load using 90% maximum duty cycle-making it ideal for single Li+ cell applications where battery voltage sags below 3.0V.
ISL8009AIRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-VFDFN 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):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
ISL8009AIRZ-T7A FAQ
1.How can I place an order for ISL8009AIRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8009AIRZ-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 ISL8009AIRZ-T7A reliable?
The price and inventory of ISL8009AIRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8009AIRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8009AIRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8009AIRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8009AIRZ-T7A?
ISL8009AIRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8009AIRZ-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 ISL8009AIRZ-T7A?
For technical support, including ISL8009AIRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8009AIRZ-T7A requirements.
6.How does Aetrix verify that ISL8009AIRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8009AIRZ-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 ISL8009AIRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8009AIRZ-T7A?
All ISL8009AIRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8009AIRZ-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 ISL8009AIRZ-T7A part is unused and in its original packaging.
Return procedure for ISL8009AIRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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