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STMicroelectronics STEVAL-ISA044V5
- Part No.:
- STEVAL-ISA044V5
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA044V5.pdf
- Description:
- EVAL BOARD FOR ST1S10
- Quantity:
- Payment:
- Shipping:
Inventory:4,632
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Product details
Overview
STEVAL-ISA044V5 from STMicroelectronics is a demonstration board implementing the ST1S10 synchronous step-down DC-DC converter in Power SO-8 ePad package, delivering up to 3 A output current across 2.5 V–18.0 V input range, operating at 900 kHz fixed switching frequency or externally synchronized (400 kHz–1.2 MHz), with inhibit function and <6 µA quiescent current in shutdown-used for LCD bias and HDD digital-core power supplies.
For engineers reviewing the STEVAL-ISA044V5 datasheet, STEVAL-ISA044V5 pinout, STEVAL-ISA044V5 application, or STEVAL-ISA044V5 equivalent, this page provides verified board-level specifications, functional architecture, component-level design meaning, and supply-chain support for industrial and embedded power design validation.
Technical Context
The board implements ST1S10's current-mode PWM control architecture with internal 900 kHz oscillator or external SYNC input (400 kHz–1.2 MHz), enabling stable regulation with low-ESR ceramic capacitors and minimal output ripple. It supports automatic burst-mode operation at light load to maximize efficiency.
Thermal shutdown activates at 150 °C; cycle-by-cycle current limiting protects against shorted outputs. The inhibit pin enables ultra-low-power shutdown (<6 µA IQ), and synchronous rectification eliminates need for external Schottky diode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 18.0 V - supports wide-input industrial and portable systems including battery-powered LCD/HDD subsystems. |
| Max Output Current | 3 A - sufficient for powering digital cores and LCD bias rails without thermal derating under typical PCB layout. |
| Switching Frequency | 900 kHz (fixed) or 400 kHz–1.2 MHz (SYNC-synchronized) - enables compact magnetics and high-density layout with small inductor/capacitor footprints. |
| Quiescent Current (Inhibit) | <6 µA - ensures negligible battery drain during system standby in portable applications. |
| Protection Features | Thermal shutdown (150 °C), cycle-by-cycle current limit - provides robust fault handling without external circuitry. |
| Topology | Synchronous buck - eliminates external Schottky diode, improving efficiency by ~5–10% over asynchronous designs at 3 A load. |
Availability
STEVAL-ISA044V5 is available at Aetrix Electronics and suitable for LCD bias generation, HDD digital-core power, portable instrumentation, and industrial point-of-load conversion requiring stable component supply and rapid prototyping validation.
Supply support for STEVAL-ISA044V5 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
This evaluation board belongs to ST's STEVAL power-conversion demonstration platform family, engineered to accelerate design-in of ST's DC-DC regulators in real-world power architectures with validated layout, BOM, and performance data.
FAQ
What is the primary function of the STEVAL-ISA044V5?
The STEVAL-ISA044V5 is a fully assembled demonstration board for the ST1S10 synchronous step-down DC-DC converter. Its purpose is to validate the device's performance-including 3 A output capability, 900 kHz switching, inhibit control, and thermal protection-in target applications like LCD bias and HDD core power, using a production-ready layout and BOM.
Does STEVAL-ISA044V5 support external frequency synchronization?
Yes. The board exposes the ST1S10's SYNC pin, allowing users to synchronize switching frequency to an external clock source between 400 kHz and 1.2 MHz. When SYNC is grounded or held below 5.5 V, the converter operates at its internal 900 kHz frequency.
What protection features are implemented on this board?
The board inherits all ST1S10 protections: cycle-by-cycle current limiting prevents damage during output shorts, and thermal shutdown activates at 150 °C. No additional discrete protection components are required-the functionality is fully integrated into the ST1S10 IC.
Can STEVAL-ISA044V5 be used for battery-powered applications?
Yes. With <6 µA quiescent current in inhibit mode and burst-mode operation at light loads, the board supports energy-sensitive portable systems. Input range (2.5 V–18.0 V) accommodates single-cell Li-ion (with boost pre-regulation) up to multi-cell configurations.
STEVAL-ISA044V5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- -
- Voltage - Input:
- 3A
- Regulator Topology:
- 2.5V ~ 18V
- Frequency - Switching:
- Buck
- Contents:
- 900kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- ST1S10
STEVAL-ISA044V5 FAQ
1.How can I place an order for STEVAL-ISA044V5 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA044V5 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 STEVAL-ISA044V5 reliable?
The price and inventory of STEVAL-ISA044V5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA044V5 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA044V5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA044V5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA044V5?
STEVAL-ISA044V5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA044V5 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 STEVAL-ISA044V5?
For technical support, including STEVAL-ISA044V5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA044V5 requirements.
6.How does Aetrix verify that STEVAL-ISA044V5 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA044V5 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 STEVAL-ISA044V5 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA044V5?
All STEVAL-ISA044V5 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA044V5, 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 STEVAL-ISA044V5 part is unused and in its original packaging.
Return procedure for STEVAL-ISA044V5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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