BQ2204ASN-NTRG4

Controllers Overview

The BQ2204ASN-NTRG4 is a nonvolatile SRAM controller unit manufactured by Texas Instruments. It provides power monitoring and switching for 3-volt battery-backup applications, featuring write-protect control and a 2-input decoder to manage up to four banks of standard CMOS SRAM. The device operates within a supply voltage range of 4.5V to 5.5V and is housed in a 16-SOIC surface-mount package. It supports an operating temperature range of 0°C to 70°C.

Controllers Feature Summary

• Provides comprehensive power monitoring and switching capabilities specifically designed for 3-volt battery-backup systems.
• Integrates write-protect control mechanisms to ensure data integrity during backup operations.
• Includes a 2-input decoder architecture capable of controlling up to four distinct banks of SRAM memory.

Controllers Applications

• Battery-backed SRAM memory systems requiring nonvolatile storage
• Real-time clock (RTC) circuits with external memory expansion
• Embedded systems needing low-power data retention during main power loss

Controllers Procurement Notes

Verify the specific suffix NTRG4 confirms the 16-SOIC surface-mount package and lead-free RoHS compliance. Confirm the manufacturer is Texas Instruments. Ensure the order matches the exact part number to avoid confusion with through-hole variants like the BQ2204APN or older revisions without the G4 suffix.

Controllers Selection Notes

Select this component when designing systems that require dedicated hardware management for multiple SRAM banks in battery-backed environments. It is suitable for applications needing precise power monitoring and write-protection features. Consider the 16-SOIC package constraints and the 4.5V to 5.5V supply requirement during PCB layout and power rail design.

Controllers Part Context

This part belongs to the BQ2204 family of nonvolatile controllers from Texas Instruments. It serves as a specialized interface between microcontrollers and SRAM arrays, ensuring data persistence. The family includes various package options such as PDIP and SOIC, with the ASN variant specifically denoting the surface-mount SOIC configuration.

Controllers Replacement Considerations

The BQ2204ASN-NG4 is a documented alternative within the same product line. Verify pin compatibility and package dimensions before substitution. Other family members like BQ2204APN offer different mounting types but share similar core functionalities.