LP3947ISD-09/NOPB

Battery Chargers Overview

The LP3947ISD-09/NOPB is a low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments. It provides a fixed output voltage of 0.9 V with a maximum load current capability of 1 A. The device operates within an input voltage range of 2.5 V to 6 V and maintains a typical dropout voltage of 380 mV at full load. It features a quiescent current of 150 µA and offers high power supply rejection ratio (PSRR). The component is housed in a small-outline package (SOT-23-5) suitable for surface-mount applications, ensuring stable regulation across the specified operating temperature range.

Battery Chargers Feature Summary

• Fixed 0.9 V output voltage configuration
• 1 A continuous load current capability
• Low quiescent current consumption
• Integrated thermal shutdown protection

Battery Chargers Applications

• Portable battery-powered devices
• Cellular phones and handheld equipment
• Wireless communication modules
• Embedded systems requiring stable low-voltage rails

Battery Chargers Procurement Notes

Verify the specific suffix '09' confirms the 0.9 V fixed output variant during procurement. Ensure compatibility with SOT-23-5 footprint requirements. Confirm RoHS compliance status through official manufacturer documentation before integration into production assemblies.

Battery Chargers Selection Notes

Select this component when a precise 0.9 V rail is required for digital logic or analog circuits. Consider its 1 A current limit and low dropout characteristics for efficiency in battery-operated designs. Evaluate thermal performance under maximum load conditions to ensure reliable operation within the specified temperature range.

Battery Chargers Part Context

This part belongs to the LP3947 series of LDO regulators from Texas Instruments. The series is designed for portable electronics requiring efficient power management. The NOPB suffix indicates lead-free packaging compliant with environmental standards. It serves as a compact solution for step-down voltage regulation in space-constrained applications.

Battery Chargers Replacement Considerations

Consult official cross-reference guides for direct substitutes. Verify pinout compatibility and electrical specifications such as output voltage tolerance and current capacity before replacing.