LP3856ESX-3.3/NOPB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LP3856ESX-3.3/NOPB is a fixed-output low-dropout linear regulator manufactured by Texas Instruments, providing a stable 3.3 V output with a maximum continuous current of 3 A. It operates within an input voltage range of 2.5 V to 7 V and features a typical power supply rejection ratio (PSRR) of 73 dB. The device exhibits a dropout voltage of 0.39 V at full load and maintains line regulation of 0.02% and load regulation of 0.08%. Designed for surface-mount applications, it utilizes a TO-263-5 package and supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides high accuracy with a fixed 3.3 V output and tight load regulation specifications.
• Features ultra-low quiescent current consumption to minimize power loss during operation.
• Incorporates comprehensive protection mechanisms including thermal shutdown and current limiting.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable battery-powered equipment requiring efficient power management
• Cellular phones and other mobile communication devices
• Pagers and handheld terminals
• Laptop computers and peripheral power supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per manufacturer documentation. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Confirm that the fixed 3.3 V output aligns with your system voltage requirements before procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a high-current 3 A LDO is needed in a compact surface-mount form factor. It is suitable for designs requiring low noise performance and fast transient response. Consider the thermal dissipation capabilities of the TO-263 package relative to the expected ambient temperature and load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the LP3856 series of ultra-low dropout regulators designed for demanding portable applications. It shares architectural similarities with other members like the LP3853 but offers higher current capacity. The series is characterized by its ability to operate with minimal input-to-output voltage difference while maintaining stability.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include the LP3856ES-3.3/NOPB which uses a tube package instead of tape and reel. Other compatible options within the same family may include different output voltage variants or adjustable versions if circuit modifications are permissible.