STMicroelectronics STEVAL-ISB006V1

Overview

STEVAL-ISB006V1 from STMicroelectronics is a dual-input (USB/wall adapter) Li-ion battery charger demonstration board built around the STw4102 linear CCCV charger IC, featuring programmable 4.1–4.35 V charge voltage (±1%), up to 1 A fast charge current, integrated gas gauge with 13-bit ADC, and I²C interface for real-time battery monitoring in portable power management systems.

For engineers reviewing the STEVAL-ISB006V1 datasheet, STEVAL-ISB006V1 pinout, STEVAL-ISB006V1 application, or STEVAL-ISB006V1 equivalent, this board enables rapid validation of dual-source charging architecture, thermal regulation behavior, end-of-charge signaling, and I²C-configurable gas gauge accuracy under variable input conditions (5 V USB / up to 16 V wall adaptor).

Technical Context

The board implements the STw4102's standalone linear charging architecture with internal power FET and sense resistor, supporting automatic source selection between USB (≤500 mA) and main adaptor (≤1 A), plus external MOSFET extension for >1 A. Thermal regulation actively reduces charge current when die temperature exceeds threshold.

Gas gauge functionality relies on a dedicated 13-bit ADC measuring voltage across an external 30 mΩ sense resistor (±1%) to resolve charge/discharge current up to ±2.5 A; battery voltage is monitored via a separate 7–12-bit ADC, and all parameters are accessible via I²C at standard-mode speeds.

Key Specifications

Availability

STEVAL-ISB006V1 is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, and rechargeable IoT edge nodes requiring stable component supply and validated dual-input Li-ion charging reference designs.

Supply support for STEVAL-ISB006V1 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/mixed-signal products for industrial, automotive, and consumer applications.

The STEVAL-ISB006V1 belongs to ST's STw4102-based evaluation platform family, engineered specifically to accelerate development of compact, thermally robust, single-cell Li-ion charging solutions with integrated fuel gauging for space-constrained portable electronics.

FAQ

What is the maximum input voltage supported by the STEVAL-ISB006V1 board?

The board accepts up to 16 V DC on the MAIN input (wall adapter), with internal overvoltage protection limiting operation beyond that threshold. USB input is strictly 5 V nominal, compliant with USB 2.0 specifications. The STw4102 IC integrates input voltage supervision and automatically disables charging if MAIN exceeds 16.5 V or USB drops below 4.35 V.

Can the STEVAL-ISB006V1 be used to charge batteries other than Li-ion?

No - the board is configured exclusively for single-cell Li-ion/Li-polymer chemistry, with fixed termination voltage options (4.1–4.35 V) and CC/CV profile optimized for that chemistry. It lacks the voltage range, termination logic, or safety thresholds required for NiMH, lead-acid, or LiFePO₄ cells.

How is the gas gauge calibrated on this demonstration board?

Calibration uses the onboard 30 mΩ ±1% sense resistor (R3) and factory-trimmed 13-bit ADC offset/gain in the STw4102. Users must configure I²C registers to match actual R3 value and battery capacity; no manual potentiometer or external calibration circuit is provided - accuracy depends on resistor tolerance and ADC linearity per datasheet spec.

Does the board support battery temperature monitoring?

No - the STEVAL-ISB006V1 schematic and documentation do not include NTC or thermistor interface circuitry. Thermal regulation is performed solely via the STw4102's internal die temperature sensor; external battery temperature sensing requires hardware modification and firmware adaptation beyond the board's default configuration.