Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Development Boards, Kits, Programmers > Evaluation Boards > DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards

STMicroelectronics STEVAL-ISA156V1

Name: STEVAL-ISA156V1
Brand: STMicroelectronics
SKU: STEVAL-ISA156V1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STEVAL-ISA156V1

Manufacturer:: STMicroelectronics

Category:: DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards

Package:

Datasheet:: STEVAL-ISA156V1.pdf

Description:: BOARD EVAL FOR L69

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,252

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STEVAL-ISA156V1 from STMicroelectronics is an evaluation board for the L6986 38 V, 2 A synchronous step-down switching regulator IC, featuring 30 μA quiescent current in low-consumption mode, adjustable 250 kHz–2 MHz switching frequency, and output voltage programmability from 0.85 V to VIN. It supports 12 V and 24 V industrial bus systems, PLCs, decentralized sensor nodes, and low-noise applications.

For engineers reviewing the STEVAL-ISA156V1 datasheet, STEVAL-ISA156V1 schematic, STEVAL-ISA156V1 application notes, or STEVAL-ISA156V1 alternative evaluation boards, this page delivers verified functional context, validated input/output operating ranges, confirmed protection features (OVP, thermal shutdown, current limiting), and precise board-level implementation details for rapid power stage validation.

Technical Context

The board implements the L6986 IC in peak current mode control architecture with integrated high-side (R_DS(on) = 180 mΩ) and low-side (R_DS(on) = 110 mΩ) MOSFETs, enabling efficient 4 V–38 V input operation and 0.85 V–V_IN output adjustment. It supports synchronization, adjustable soft-start, and output voltage sequencing for multi-rail systems.

Two operational modes-low-consumption mode (30 μA I_Q at 3.3 V out) and low-noise mode-are selectable via jumper configuration. Embedded output voltage supervisor and overvoltage protection provide system-level fault resilience without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4 V to 38 V - supports wide industrial DC bus inputs including 12 V and 24 V nominal systems.
Output Current	Up to 2 A continuous - sufficient for powering microcontrollers, sensors, and I/O modules in PLC edge nodes.
Quiescent Current	30 μA in low-consumption mode - enables battery-backed or energy-harvesting applications with extended standby life.
Switching Frequency	Adjustable 250 kHz to 2 MHz - allows EMI optimization and inductor size trade-off per layout constraints.
Output Voltage Range	0.85 V to V_IN - supports core logic (1.2 V, 1.8 V), I/O (3.3 V, 5 V), and analog rails (±5 V, ±12 V) via feedback resistor tuning.
Protection Features	Overvoltage, thermal shutdown, internal current limiting - eliminates need for discrete protection circuitry in field-deployed designs.

Availability

STEVAL-ISA156V1 is available at Aetrix Electronics and suitable for industrial PLCs, decentralized sensor nodes, 24 V bus-powered instrumentation, and low-noise analog subsystems requiring stable component supply and validated reference design fidelity.

Supply support for STEVAL-ISA156V1 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 automotive, industrial, and power management solutions with broad portfolio coverage and manufacturing scale.

The STEVAL-ISA156V1 belongs to ST's STEVAL evaluation platform family, designed to accelerate adoption of its high-voltage DC-DC regulators in industrial automation, smart sensing, and ruggedized embedded power applications.

FAQ

What input voltage range does the STEVAL-ISA156V1 support?

The board accepts 4 V to 38 V DC input, validated for use with standard 12 V and 24 V industrial power buses. This range accommodates brown-out margins and transient surges typical in factory-floor environments. Input filtering and reverse-polarity protection are implemented per ST's reference design guidelines in DocID026706 Rev 1.

How is output voltage adjusted on this evaluation board?

Output voltage is set via external feedback resistors (R_FBB and R_FBA) per the L6986's 0.8 V reference. The board includes test points and footprint options for resistor replacement, enabling precise tuning from 0.85 V up to the input rail. Default configuration delivers 3.3 V, confirmed in the schematic (Figure 1, DocID026706 Rev 1).

Does the board support synchronization with external clock sources?

Yes - the STEVAL-ISA156V1 exposes the L6986's SYNC pin and includes a dedicated header (J3) for external clock injection. Synchronization range matches the IC's 250 kHz–2 MHz f_SW capability, allowing noise-sensitive systems to align switching edges and reduce beat frequencies in multi-board deployments.

What protection mechanisms are implemented on the board?

The board inherits all L6986-integrated protections: overvoltage lockout (OVP), thermal shutdown, cycle-by-cycle current limiting, and undervoltage lockout (UVLO). No additional discrete protection components are required. These functions are active by default and verified in functional test reports referenced in the data brief (DocID026706 Rev 1, Section "Features").

STEVAL-ISA156V1 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:: -

Voltage - Input:: 2A

Regulator Topology:: 4V ~ 38V

Frequency - Switching:: Buck

Contents:: -

Utilized IC / Part:: Board(s)

Power - Output:: -

STEVAL-ISA156V1 FAQ

1.How can I place an order for STEVAL-ISA156V1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STEVAL-ISA156V1 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-ISA156V1 reliable?

The price and inventory of STEVAL-ISA156V1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-ISA156V1 is usually 5 days.

3.What payment methods are accepted for STEVAL-ISA156V1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-ISA156V1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STEVAL-ISA156V1?

STEVAL-ISA156V1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STEVAL-ISA156V1 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-ISA156V1?

For technical support, including STEVAL-ISA156V1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-ISA156V1 requirements.

6.How does Aetrix verify that STEVAL-ISA156V1 is sourced from the original manufacturer or authorized distributors?

All STEVAL-ISA156V1 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-ISA156V1 meets industry standards.

7.What is the process for return or replacement of STEVAL-ISA156V1?

All STEVAL-ISA156V1 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-ISA156V1, 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-ISA156V1 part is unused and in its original packaging.

Return procedure for STEVAL-ISA156V1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…