NCS35011DTBR2G

Battery Management Overview

The NCS35011DTBR2G is an ultralow power protection integrated circuit designed for managing three to five series-connected lithium-ion batteries. It provides high-precision overvoltage and undervoltage detection with ±5 mV accuracy at 25°C. The device features a built-in ADC sampling every 125 ms, configurable fault outputs (ODI/UDI), and up to five LED outputs for state-of-charge indication. It operates within a BAT voltage range of 5 V to 28 V, withstands 70 V surges, and draws only 4 µA static current.

Battery Management Feature Summary

• Provides hardware-based overvoltage and undervoltage protection for 3S to 5S battery packs without microcontroller intervention.
• Delivers accurate state-of-charge visualization through up to five dedicated LED outputs driven by internal logic.
• Offers flexible fault signaling via configurable push-pull or open-drain ODI and UDI pins.
• Ensures robust operation in harsh environments with extended junction temperature ratings and high surge immunity.

Battery Management Applications

• Consumer electronics primary or secondary side battery protection
• Industrial product secondary side battery management
• Portable devices requiring low-power lithium-ion monitoring

Battery Management Procurement Notes

Verify the complete part number including the suffix DTBR2G to ensure correct tape-and-reel packaging configuration. Confirm that the specific ordering code matches the required package type and quantity specifications. Cross-reference the manufacturer's official documentation for any recent revisions or alternate suffixes that may affect mechanical dimensions or electrical characteristics before finalizing procurement orders.

Battery Management Selection Notes

Select this component when designing systems requiring autonomous battery protection for 3 to 5 series cells. It is suitable for applications needing precise voltage monitoring with minimal quiescent current consumption. Ensure the design accommodates the required LED drive capabilities and fault output configurations. Verify that the input voltage range and surge tolerance meet the specific system requirements.

Battery Management Part Context

This component belongs to onsemi's battery management portfolio, specifically targeting ultralow power protection and fuel gauge applications. It integrates both safety monitoring and user interface functions into a single IC, reducing the bill of materials for battery-powered devices. The device supports various lithium-ion chemistries within the specified voltage ranges.

Battery Management Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin compatibility and electrical parameter alignment before replacing existing designs with other battery protection ICs.

Battery Management FAQ

How does the NCS35011 handle undervoltage recovery?

Upon undervoltage detection, the sampling period shortens to 15.625 ms. Recovery requires two consecutive measurements of all cell voltages exceeding the threshold, with a minimum recovery time of 31.25 ms.

What is the maximum surge voltage the device can withstand?

The device is designed to withstand surge voltages up to 70 V, enhancing immunity against transient events in the battery line.