LP38855S-1.2

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

The LP38855S-1.2/NOPB is a fixed-output linear low-dropout regulator manufactured by Texas Instruments, providing a stable 1.2V output with a maximum current capacity of 1.5A. It utilizes a TO-263 (DDPAK-5) surface-mount package and operates within an input voltage range up to 5.5V. The device features a typical quiescent current of 300 µA and includes comprehensive protection mechanisms such as overcurrent, thermal overload, short-circuit, and undervoltage lockout.

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

• Integrated overcurrent, thermal overload, short-circuit, and undervoltage lockout protection
• Fixed 1.2V output configuration for precise voltage regulation
• High power dissipation capability via TO-263 surface-mount packaging

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

• Portable electronic devices requiring efficient power management
• Battery-powered systems needing low quiescent current operation
• Embedded circuits utilizing 1.2V logic or reference levels

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

Verify the complete part number suffix, specifically confirming the presence of /NOPB to ensure compliance with RoHS standards and absence of hazardous substances. Confirm the package designation matches the required TO-263 form factor for PCB layout compatibility. Cross-reference the manufacturer's latest datasheet to validate operational temperature ranges and electrical characteristics against specific design requirements before finalizing procurement orders.

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

Select this component when a fixed 1.2V rail is required at currents up to 1.5A with minimal external components. The integrated protections simplify design implementation compared to discrete solutions. Ensure the application environment supports the specified operating temperature range and that the thermal pad connection is properly managed to handle heat dissipation effectively under full load conditions.

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

This device belongs to the LP38855 series of positive LDO regulators from Texas Instruments. It is designed for applications demanding high efficiency and robust protection in compact packages. The series typically offers low dropout voltages and high PSRR, making it suitable for noise-sensitive analog and digital loads in portable and industrial electronics.

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

LP38855SX-1.2/NOPB

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

What protection features are included in the LP38855S-1.2?

The device includes overcurrent protection, thermal overload protection, short-circuit protection, and undervoltage lockout (UVLO).

What is the maximum output current for this regulator?

The LP38855S-1.2 provides a maximum output current of 1.5A.