STNS01PUR

Overview

The STNS01PUR is a linear battery charger IC designed for single-cell lithium-ion batteries, manufactured by STMicroelectronics. It integrates an LDO regulator and comprehensive protection functions within a DFN12L (3x3x0.75 mm) package. The device employs a CC/CV charging algorithm with a programmable fast-charge current up to 200 mA and a floating voltage accuracy of 1% at 4.2 V. It supports an input supply voltage up to 5.4 V and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates automatic power path management to switch between input supply and battery power seamlessly.
• Includes built-in battery overcharge, over-discharge, and overcurrent protection circuitry.
• Features a low quiescent current and very low battery leakage in shutdown mode.
• Provides charge and fault status outputs along with a charger enable input.

Applications

• Single-cell lithium-ion battery charging in portable electronic devices
• Power management systems requiring integrated LDO regulation
• Battery-powered consumer electronics with space-constrained designs

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and compliance attributes. Confirm that the component grade matches industrial requirements if applicable. Cross-reference the datasheet revision to validate all electrical parameters before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring a compact solution for single-cell Li-Ion batteries with integrated LDO capabilities. Ensure the design accommodates the programmable charge current via an external resistor. Verify that the operating temperature range meets the environmental conditions of the target application.

Part Context

The STNS01PUR belongs to the STNS01 family of linear battery chargers from STMicroelectronics. This series is engineered for efficient power management in small form-factor devices. The part number indicates the specific package variant and RoHS compliance status within the broader product line.

Replacement Considerations

Consult the manufacturer's official replacement guide for verified substitute part numbers. Do not assume compatibility based on similar package types or general functional descriptions without explicit confirmation from the datasheet.

FAQ

How is the fast-charge current programmed?

The fast-charge current is programmed using an external resistor connected to the device.

What protection features are integrated into the STNS01PUR?

The device includes battery overcharge, over-discharge, overcurrent protection, and charging timeout functionality.