LM3705XCBPX-308

Supervisors Overview

The LM3705XCBPX-308 is a single-channel power supply support circuit manufactured by National Semiconductor, now part of Texas Instruments. It is housed in a BGA9 package and functions as a voltage supervisor or reset controller. The device monitors the input supply voltage and generates a reset signal when the voltage drops below a specific threshold. Key electrical parameters include an operating supply voltage range from 1.2 V to 5.5 V, with a nominal supply voltage of 1.8 V. The reset threshold voltage is fixed at 3.08 V. The component operates within a temperature range of -40 °C to +85 °C.

Supervisors Feature Summary

• Provides reliable system reset functionality by monitoring supply voltage levels
• Features a fixed reset threshold voltage for precise supervision without external components
• Operates over a wide input voltage range suitable for various digital logic families
• Compact surface-mount packaging designed for space-constrained applications

Supervisors Applications

• Microprocessor and microcontroller system reset circuits
• Battery-powered devices requiring low-voltage detection
• Portable electronics with strict power management requirements
• Industrial control systems needing reliable voltage supervision

Supervisors Procurement Notes

Verify the manufacturer designation, as National Semiconductor assets were acquired by Texas Instruments. Ensure the suffix 'XCBPX' corresponds to the correct BGA9 package variant and that the '308' suffix accurately reflects the 3.08 V threshold requirement. Confirm RoHS compliance status and check for any updated datasheets from Texas Instruments to ensure compatibility with current design standards.

Supervisors Selection Notes

Select this component when a fixed 3.08 V reset threshold is required for systems powered between 1.2 V and 5.5 V. Consider the BGA9 package size for PCB layout constraints. Evaluate if the fixed threshold meets the specific brown-out detection needs of the target application compared to adjustable alternatives. Verify thermal performance within the specified -40 °C to +85 °C operating range.

Supervisors Part Context

This part belongs to the LM370x series of power supply management circuits from National Semiconductor/Texas Instruments. These devices are designed to monitor voltage rails and provide reset signals to digital logic. The XCBPX suffix indicates a fine-pitch grid array package, distinguishing it from other package options like SOT or SOIC found in the broader family.

Supervisors Replacement Considerations

Check for direct equivalents in the LM370x series with compatible threshold voltages. Texas Instruments may offer updated revisions or alternative packages within the same functional family. Verify pinout compatibility and electrical specifications before substitution.