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STMicroelectronics STEVAL-ISA141V2
- Part No.:
- STEVAL-ISA141V2
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA141V2.pdf
- Description:
- EVAL BOARD FOR STBB3JCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,148
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Product details
Overview
STEVAL-ISA141V2 from STMicroelectronics is an evaluation board for the STBB3JCC buck-boost DC-DC converter, designed to drive high-brightness white LEDs from a single-cell Li-ion battery (1.8 V–5.5 V input). It delivers 2 A at 3.3 V in buck mode (VIN = 3.6–5.5 V), 800 mA at 3.3 V in boost mode (VIN = 2.0 V), and achieves >94% typical efficiency with 2 MHz fixed switching frequency and 100 mV feedback voltage.
For engineers reviewing the STEVAL-ISA141V2 datasheet, STEVAL-ISA141V2 pinout, STEVAL-ISA141V2 application, or STEVAL-ISA141V2 equivalent, this board enables rapid validation of STBB3JCC-based LED driver designs requiring automatic buck/boost transition, adjustable output (1.2–5.5 V), power-save mode, and compact Flip Chip 20 (0.4 mm pitch) implementation.
Technical Context
The STEVAL-ISA141V2 implements the STBB3JCC IC in a fully assembled, tested reference layout optimized for HB WLED driving. Its 2 MHz fixed-frequency operation allows use of small external inductors and ceramic capacitors, while the 100 mV FB threshold minimizes sensing resistor loss and improves current regulation accuracy across varying LED forward voltages.
Automatic mode transition between buck and boost ensures continuous LED current regulation as battery voltage drops from 4.2 V to 2.0 V. The board supports external synchronization up to 2.4 MHz and includes soft-start, shutdown (<1 µA), load disconnect, and power-save mode for extended runtime in portable lighting applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Base IC | STBB3JCC buck-boost DC-DC converter with integrated power switches |
| Input Voltage Range | 1.8 V to 5.5 V - supports full discharge curve of single-cell Li-ion (4.2 V → 2.0 V) |
| Output Current | 2 A @ 3.3 V (buck mode, VIN ≥ 3.6 V); 800 mA @ 3.3 V (boost mode, VIN = 2.0 V) |
| Switching Frequency | 2.0 MHz fixed, adjustable up to 2.4 MHz via external sync signal - enables <1 µH inductor use |
| Feedback Voltage | 100 mV ±2% - reduces I²R loss in current-sense resistor and improves LED current stability |
| Quiescent Current | <50 µA - extends battery life in standby; shutdown current <1 µA |
Availability
STEVAL-ISA141V2 is available at Aetrix Electronics and suitable for portable medical devices, handheld industrial scanners, and battery-powered smart lighting systems requiring stable component supply, fast design validation, and proven HB LED driver reference implementation.
Supply support for STEVAL-ISA141V2 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, Switzerland, specializing in microcontrollers, power management, analog, MEMS, and automotive ICs.
The STEVAL-ISA141V2 belongs to ST's STBBx family of high-efficiency buck-boost converters targeting space-constrained, battery-operated LED lighting and portable power applications with wide-input, constant-current capability.
FAQ
What is the primary function of the STEVAL-ISA141V2 evaluation board?
The STEVAL-ISA141V2 is a fully assembled reference design board that demonstrates the STBB3JCC buck-boost DC-DC converter driving high-brightness white LEDs. It validates automatic mode transition, efficiency, thermal performance, and layout best practices for single-cell Li-ion powered LED applications - not a standalone production component.
Does the board support adjustable output voltage, and how is it configured?
Yes - output voltage is adjustable from 1.2 V to 5.5 V using an external resistor divider on the FB pin. The STBB3JCC's 100 mV feedback reference enables precise current regulation for LED strings; the board includes test points and footprint options for custom resistor selection per target LED forward voltage.
Can the switching frequency be modified, and what is the impact on external components?
Yes - the board operates at 2.0 MHz by default but accepts an external synchronous square wave up to 2.4 MHz. Higher frequency reduces required inductor size (e.g., enabling 0.47 µH instead of 1.0 µH) and output capacitance, directly shrinking PCB area and cost without compromising regulation stability.
Is load disconnect implemented during shutdown, and how is it verified?
Yes - the STBB3JCC IC integrates active load disconnect during shutdown, and the STEVAL-ISA141V2 board routes the SW node through a dedicated path that isolates the LED string from the input source. This is confirmed in the schematic (Figure 1, DocID026186 Rev 2) and prevents battery drain when the system is off.
STEVAL-ISA141V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Box
- Product Status:
- Obsolete
- Main Purpose:
- DC/DC, Step Up or Down
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 1.2V ~ 5.5V
- Voltage - Input:
- 2A, 800mA
- Regulator Topology:
- 1.8V ~ 5.5V
- Frequency - Switching:
- Buck-Boost
- Contents:
- 2MHz
- Utilized IC / Part:
- Board(s)
- Power - Output:
- STBB3JCC
STEVAL-ISA141V2 FAQ
1.How can I place an order for STEVAL-ISA141V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA141V2 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-ISA141V2 reliable?
The price and inventory of STEVAL-ISA141V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA141V2 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA141V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA141V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA141V2?
STEVAL-ISA141V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA141V2 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-ISA141V2?
For technical support, including STEVAL-ISA141V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA141V2 requirements.
6.How does Aetrix verify that STEVAL-ISA141V2 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA141V2 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-ISA141V2 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA141V2?
All STEVAL-ISA141V2 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA141V2, 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-ISA141V2 part is unused and in its original packaging.
Return procedure for STEVAL-ISA141V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA141V2 Tags
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DFR0571
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DFR0379
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DFRobot
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1385
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DC2468A
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