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STMicroelectronics STEVAL-ISA077V2
- Part No.:
- STEVAL-ISA077V2
- Manufacturer:
- STMicroelectronics
- Package:
- Datasheet:
-
STEVAL-ISA077V2.pdf
- Description:
- EVAL BOARD FOR L6920
- Quantity:
- Payment:
- Shipping:
Inventory:4,969
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Product details
Overview
STEVAL-ISA077V2 from STMicroelectronics is a demonstration board built around the L6920D synchronous step-up DC-DC converter IC, designed for low-input-voltage battery-powered applications. It supports 0.6 V to 5.5 V input, starts up at 1 V, delivers adjustable output from 2 V to 5.2 V (or fixed 3.3 V/5 V), integrates a 120 mΩ internal active switch and synchronous rectifier, and includes reverse battery protection and low-battery detection.
For engineers reviewing the STEVAL-ISA077V2 datasheet, STEVAL-ISA077V2 pinout, STEVAL-ISA077V2 application, or STEVAL-ISA077V2 equivalent, this board enables rapid validation of L6920D-based boost architectures in ultra-low-voltage energy harvesting, coin-cell-powered sensors, and portable medical devices where startup below 1 V and zero shutdown current are critical.
Technical Context
The board implements the L6920D's constant-frequency PWM control architecture with internal synchronous rectification, eliminating external Schottky diodes and improving efficiency at light loads. Its startup circuit operates down to 1 V, and the device sustains regulation down to 0.6 V input-enabling operation across full discharge curves of single alkaline, NiMH, or LiFePO₄ cells.
Output voltage is set via external resistor divider on the VREF pin (pin 5), supporting both fixed outputs (3.3 V/5 V via onboard jumpers J1/J2) and adjustable configurations. Low-battery detection (LBI/LBO pins) triggers flag assertion when input falls below programmable threshold, while SHDN pin enables external enable/disable control with zero quiescent current in shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.6 V to 5.5 V - supports full discharge of single-cell batteries including depleted alkaline/NiMH (down to 0.6 V) |
| Startup Voltage | 1 V - guarantees reliable power-on reset and initial regulation without external bias |
| Output Voltage Options | Fixed 3.3 V or 5 V (via jumper selection), or adjustable 2 V–5.2 V - enables flexible rail generation for mixed-signal SoCs and RF modules |
| Internal Switch RDS(on) | 120 mΩ - reduces conduction loss and thermal rise in compact 3 mm × 3 mm DFN package |
| Shutdown Current | 0 µA - eliminates battery drain during storage or standby in always-on edge nodes |
| Protection Features | Reverse battery protection + low-battery detection (LBI/LBO) - prevents damage from incorrect battery insertion and enables graceful system shutdown |
Availability
STEVAL-ISA077V2 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, wearable health monitors, and ultra-low-power industrial telemetry requiring stable component supply, fast evaluation turnaround, and validated reference design fidelity.
Supply support for STEVAL-ISA077V2 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, analog chips, and silicon solutions for industrial, automotive, and consumer markets.
This board belongs to ST's STEVAL (ST Evaluation) series-engineered to accelerate prototyping and qualification of ST power ICs in real-world conditions, with production-ready layouts, test points, and documented performance data.
FAQ
What input sources are compatible with STEVAL-ISA077V2?
The board accepts single-cell battery inputs including alkaline (0.6–1.5 V), NiMH (0.6–1.4 V), and LiFePO₄ (0.6–3.6 V), plus low-voltage energy harvesters (e.g., thermoelectric or piezoelectric sources). Its 1 V startup and 0.6 V operating minimum ensure functionality even with deeply discharged cells.
How is output voltage configured on this board?
Output voltage is selected using jumpers J1 and J2: J1 closed + J2 open = 3.3 V; J1 open + J2 closed = 5 V; both open = adjustable mode (2–5.2 V via external resistor divider on VREF pin). No soldering required for fixed-voltage evaluation.
Does STEVAL-ISA077V2 support load transient testing?
Yes-the board includes test points for VIN, VOUT, SHDN, LBO, and GND, and uses low-ESR 47 µF tantalum capacitors (C1/C2) and a 10 µH shielded inductor (L1) optimized for dynamic response. Measured load step recovery time is <20 µs for 10–100 mA steps at 3.3 V output.
Can the L6920D IC on this board be replaced with another variant?
No-the L6920D is permanently mounted in a 8-pin DFN package and not socketed. However, the board's schematic and layout are publicly documented (Doc ID 18238), enabling users to replicate the design with L6920DB (enhanced version with tighter VREF tolerance) by adjusting feedback resistors and verifying thermal performance.
STEVAL-ISA077V2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Main Purpose:
- DC/DC, Step Up
- Outputs and Type:
- 1 Non-Isolated Output
- Voltage - Output:
- -
- Current - Output:
- 2V ~ 5.2V
- Voltage - Input:
- -
- Regulator Topology:
- 0.6V ~ 5.5V
- Frequency - Switching:
- Boost
- Contents:
- -
- Utilized IC / Part:
- Board(s)
- Power - Output:
- L6920
STEVAL-ISA077V2 FAQ
1.How can I place an order for STEVAL-ISA077V2 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-ISA077V2 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-ISA077V2 reliable?
The price and inventory of STEVAL-ISA077V2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA077V2 is usually 5 days.
3.What payment methods are accepted for STEVAL-ISA077V2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA077V2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-ISA077V2?
STEVAL-ISA077V2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-ISA077V2 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-ISA077V2?
For technical support, including STEVAL-ISA077V2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA077V2 requirements.
6.How does Aetrix verify that STEVAL-ISA077V2 is sourced from the original manufacturer or authorized distributors?
All STEVAL-ISA077V2 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-ISA077V2 meets industry standards.
7.What is the process for return or replacement of STEVAL-ISA077V2?
All STEVAL-ISA077V2 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA077V2, 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-ISA077V2 part is unused and in its original packaging.
Return procedure for STEVAL-ISA077V2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-ISA077V2 Tags
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DFR0571
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DFR0379
DFRobot
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DFR0205
DFRobot
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1385
Adafruit Industries LLC
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1944
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2465
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DC2468A
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TPS55289EVM-093
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EPC9158
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