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STMicroelectronics STEVAL-ISA078V1
- Part No.:
- STEVAL-ISA078V1
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA078V1.pdf
- Description:
- EVAL BOARD FOR L6926
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
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Product details
Overview
STEVAL-ISA078V1 from STMicroelectronics is a demonstration board implementing the L6926 monolithic synchronous step-up (boost) regulator, configured for adjustable 0.6 V to VIN output, 2 V–5.5 V input, 800 mA max load, 600 kHz fixed/1.4 MHz sync switching, and ±1% output voltage accuracy. It targets battery-powered portable electronics requiring high efficiency and ultra-low quiescent current.
For engineers reviewing the STEVAL-ISA078V1 datasheet, STEVAL-ISA078V1 pinout, STEVAL-ISA078V1 application, or STEVAL-ISA078V1 equivalent, this page provides verified board-level specifications, functional context, supply chain availability, and manufacturer-specific design intent - all aligned with ST's official documentation (Doc ID 022889 Rev 1, March 2012).
Technical Context
The board implements the L6926 IC in constant-frequency peak-current-mode control with external synchronization capability up to 1.4 MHz. It supports 100% duty cycle operation enabling low-dropout regulation down to 0.6 V output, using an internal 0.6 V reference and feedback resistive divider network (R2/R3/R4).
Protection features include hysteretic UVLO, overvoltage protection (OVP), constant-current short-circuit protection, thermal shutdown, and Power Good (PGOOD) signaling. Quiescent current is 25 µA typical; shutdown current is 0.2 µA - optimized for battery runtime in always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2 V to 5.5 V - supports single-cell Li-ion, Li-polymer, or dual-cell alkaline/NiMH batteries. |
| Output Current Capability | Up to 800 mA continuous - sufficient for powering core logic, display bias, or RF modules in handheld devices. |
| Switching Frequency | 600 kHz internal / up to 1.4 MHz externally synchronized - enables compact magnetics and EMI-aware layout tuning. |
| Output Voltage Accuracy | ±1% - ensures stable supply for precision analog circuitry or low-voltage microcontrollers. |
| Quiescent Current | 25 µA typical - minimizes standby power loss in battery-backed systems with infrequent wake-up cycles. |
| Shutdown Current | 0.2 µA maximum - critical for long-term storage or deep-sleep modes in portable instrumentation. |
| Protection Features | UVLO, OVP, short-circuit (constant-current), thermal shutdown, PGOOD - enables robust field deployment without external supervision. |
Availability
STEVAL-ISA078V1 is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld terminals, digital still cameras (DSCs), and cellular phone auxiliary power rails requiring stable component supply and rapid evaluation of boost converter performance.
Supply support for STEVAL-ISA078V1 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 management ICs, sensors, and analog chips for industrial, automotive, and consumer applications.
This board belongs to ST's STEVAL (ST Evaluation) series - purpose-built to accelerate prototyping and validation of ST power ICs like the L6926 in real-world battery-powered systems.
FAQ
What is the primary function of the STEVAL-ISA078V1 board?
The STEVAL-ISA078V1 is a fully assembled demonstration board for the L6926 synchronous step-up DC-DC converter. Its primary function is to provide a validated hardware platform for evaluating output regulation, efficiency, transient response, and protection behavior under real battery-input conditions (2–5.5 V) and variable loads up to 800 mA.
Can the output voltage be adjusted, and what is the minimum achievable value?
Yes, the output voltage is adjustable via external resistor divider (R2/R3/R4). The minimum regulated output is 0.6 V - set by the L6926's internal reference voltage - enabling direct supply to low-voltage cores such as ARM Cortex-M0+ or sensor signal chains without additional LDOs.
Does the board support external clock synchronization, and what is the maximum frequency?
Yes, the board exposes the SYNC pin (Pin 4 of L6926) and includes necessary routing and decoupling. It supports external synchronization up to 1.4 MHz, allowing system-level clock alignment to reduce beat frequencies and simplify EMI filtering in multi-rail designs.
What protection mechanisms are implemented on the STEVAL-ISA078V1?
The board implements all protections integrated into the L6926: undervoltage lockout (UVLO) with hysteresis, overvoltage protection (OVP), constant-current short-circuit limiting, thermal shutdown, and Power Good (PGOOD) open-drain status signaling - verified per ST's characterization in Doc ID 022889 Rev 1.
STEVAL-ISA078V1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1.8V
- Voltage - Input:
- 800mA
- Regulator Topology:
- 2V ~ 5.5V
- Frequency - Switching:
- Buck
- Contents:
- 600kHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L6926
STEVAL-ISA078V1 FAQ
1.How can I place an order for STEVAL-ISA078V1 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA078V1 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-ISA078V1 reliable?
The price and inventory of STEVAL-ISA078V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA078V1 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA078V1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA078V1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA078V1?
STEVAL-ISA078V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA078V1 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-ISA078V1?
For technical support, including STEVAL-ISA078V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA078V1 requirements.
6.How does Aetrix verify that STEVAL-ISA078V1 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA078V1 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-ISA078V1 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA078V1?
All STEVAL-ISA078V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA078V1, 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-ISA078V1 part is unused and in its original packaging.
Return procedure for STEVAL-ISA078V1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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