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Renesas ISL85003DEMO1Z
- Part No.:
- ISL85003DEMO1Z
- Manufacturer:
- Renesas
- Package:
- Datasheet:
-
ISL85003DEMO1Z.pdf
- Description:
- EVAL BOARD FOR ISL85003
- Quantity:
- Payment:
- Shipping:
Inventory:3,513
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Product details
Overview
The ISL85003DEMO1Z from Renesas Electronics is a demonstration board for the ISL85003 3A synchronous buck regulator, configured with a fixed 5V output, 4.5V–18V input range, and 500kHz switching frequency. It enables rapid evaluation of point-of-load power delivery in industrial and embedded systems requiring compact, high-efficiency DC/DC conversion.
For engineers reviewing the ISL85003DEMO1Z datasheet, ISL85003DEMO1Z pinout, ISL85003DEMO1Z application, or ISL85003DEMO1Z equivalent, this board supports quick validation of transient response, efficiency mapping, external synchronization up to 2MHz, and mode selection (PWM/DCM) under real load conditions.
Technical Context
The ISL85003DEMO1Z implements current-mode control with internal compensation and supports both PWM and DCM operation via MODE pin configuration. Its onboard ISL85003FRZ IC operates in a 4×3mm DFN-12 package and integrates BOOT, PHASE, EN, PG, FB, COMP, and SS/EN dual-function pins.
The board features fixed 5V output set by an external resistor divider (R1 = 301kΩ, R2 = 57.6kΩ), 4.7µH power inductor (Würth 744311470), and low-ESR ceramic output capacitors totaling 54µF (C1, C2, C5, C6, C11). EN is hard-wired to VIN via R7 for always-on operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5V - pre-configured for immediate testing without resistor adjustment. |
| Input Voltage Range | 4.5V to 18V - supports wide-input industrial rails including 5V, 12V, and 15V bus supplies. |
| Max Output Current | 3A continuous - validated with thermal design using 4.7µH/6A inductor and 22µF ×3 output capacitance. |
| Switching Frequency | 500kHz default - enables compact magnetics and low-output-ripple design; externally synchronizable up to 2MHz. |
| Control Architecture | Current-mode PWM/DCM - provides fast transient response and stable operation across light-to-full load. |
| Board Form Factor | Small form factor demo board - optimized for bench evaluation, not system integration; no mounting holes specified. |
Availability
ISL85003DEMO1Z is available at Aetrix Electronics and suitable for industrial automation, embedded computing, and test equipment applications requiring stable component supply, rapid prototyping support, and verified reference designs for buck regulators.
Supply support for ISL85003DEMO1Z 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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise applications.
The ISL85003DEMO1Z belongs to Renesas' high-efficiency point-of-load (POL) demonstration platform, designed specifically to accelerate adoption of the ISL85003/ISL85003A family in space-constrained, thermally demanding DC/DC applications.
FAQ
What is the primary function of the ISL85003DEMO1Z?
The ISL85003DEMO1Z is a dedicated evaluation platform for the ISL85003 3A synchronous buck regulator. It provides a fully assembled, tested circuit with fixed 5V output, enabling engineers to validate efficiency, thermal performance, and dynamic response without designing a custom PCB. The ISL85003DEMO1Z includes all critical passive components and interface points for probing key nodes like VIN, VOUT, EN, MODE, and PG.
Can the output voltage of the ISL85003DEMO1Z be adjusted?
Yes - although the ISL85003DEMO1Z is preset to 5V, its output voltage is set by an external resistor divider (R1 and R2) connected to the FB pin. Replacing R1 (301kΩ) and/or R2 (57.6kΩ) allows adjustment per the ISL85003 datasheet's feedback equation. The board includes footprint space and test points to support rework, and AN1930 provides detailed guidance on scaling VOUT using the internal 0.6V reference.
How does the ISL85003DEMO1Z support external synchronization?
The ISL85003DEMO1Z supports external clock synchronization up to 2MHz via the SYNC pin on the ISL85003FRZ IC. Though not pre-routed as a standard header, the SYNC signal is accessible at U1 Pin 13 (EP pad is ground; Pin 13 is unused in default layout but documented in the ISL85003 datasheet). Users must add a series capacitor and routing to inject the external clock - confirming compatibility with the ISL85003's sync architecture before implementation.
What is the role of the MODE pin on the ISL85003DEMO1Z?
On the ISL85003DEMO1Z, the MODE pin (U1 Pin 3) is pulled to VCC via R6 (200kΩ), configuring the ISL85003FRZ for forced PWM operation. Tying MODE to GND switches the regulator to CCM mode. This pin enables direct comparison of ripple, efficiency, and light-load behavior between modulation schemes - a key capability for optimizing POL performance in noise-sensitive applications.
Does the ISL85003DEMO1Z include soft-start functionality?
No - the ISL85003DEMO1Z uses the base ISL85003 (not ISL85003A) and lacks programmable soft-start. Its EN pin is tied directly to VIN via R7, resulting in immediate startup with no controlled ramp. For adjustable soft-start, users should evaluate the ISL85003ADEMO1Z variant, which substitutes the ISL85003AFRZ and adds SS pin support with C10 and R6 configuration options.
ISL85003DEMO1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 5V
- Voltage - Input:
- 3A
- Regulator Topology:
- 4.5V ~ 18V
- Frequency - Switching:
- Buck
- Contents:
- 500kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ISL85003
ISL85003DEMO1Z FAQ
1.How can I place an order for ISL85003DEMO1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL85003DEMO1Z 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 ISL85003DEMO1Z reliable?
The price and inventory of ISL85003DEMO1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL85003DEMO1Z is usually 5 days.
3.What payment methods are accepted for ISL85003DEMO1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL85003DEMO1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL85003DEMO1Z?
ISL85003DEMO1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL85003DEMO1Z 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 ISL85003DEMO1Z?
For technical support, including ISL85003DEMO1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL85003DEMO1Z requirements.
6.How does Aetrix verify that ISL85003DEMO1Z is sourced from the original manufacturer or authorized distributors?
All ISL85003DEMO1Z 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 ISL85003DEMO1Z meets industry standards.
7.What is the process for return or replacement of ISL85003DEMO1Z?
All ISL85003DEMO1Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL85003DEMO1Z, 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 ISL85003DEMO1Z part is unused and in its original packaging.
Return procedure for ISL85003DEMO1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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