LP38691DT-3.3/NOPB

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

The LP38691DT-3.3/NOPB is a fixed-output linear regulator from Texas Instruments, providing a stable 3.3V output with a maximum continuous current of 500mA. It operates within an input voltage range of 2.7V to 10V and features a low dropout characteristic. The device utilizes a TO-252 (DPAK) surface-mount package with three pins. It supports an operating temperature range from -40°C to +125°C and includes internal thermal shutdown protection.

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

• Provides stable regulation using ceramic output capacitors
• Features low quiescent current for power efficiency
• Includes thermal overload protection

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

• Portable battery-powered equipment
• Cellular phones and PDAs
• Laptop computers
• PDA peripherals

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

Verify the specific suffix 'NOPB' indicates lead-free status and RoHS compliance as per manufacturer standards. Confirm the package type matches the required TO-252 footprint on the PCB. Ensure the application circuit utilizes ceramic capacitors to maintain stability, as specified in the technical documentation.

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

Select this component when a fixed 3.3V rail is required with up to 500mA load capability. It is suitable for designs prioritizing low noise and stability with ceramic capacitors over tantalum or aluminum types. Consider the thermal performance in the TO-252 package relative to the expected power dissipation and ambient temperature conditions.

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

This part belongs to the LP3869x series of 500mA Low Dropout CMOS Linear Regulators. The series is characterized by its ability to remain stable with small-value ceramic output capacitors, simplifying board layout and reducing overall system cost compared to regulators requiring larger electrolytic or tantalum components.

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

Compatible substitutes include LP38690DT-3.3/NOPB and LP38691SDX-3.3/NOPB. Verify that alternative packages such as WSON or LLP meet the physical space constraints and thermal requirements of the design.