LP3987ITLX-2.5/NOPB

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

The LP3987ITLX-2.5/NOPB is a micropower micro SMD 150 mA ultra low-dropout CMOS voltage regulator with a sleep mode, manufactured by Texas Instruments. It features a fixed 2.5 V output voltage and operates within a 2.7 V to 6.0 V input range. The device guarantees a maximum dropout voltage of 100 mV at a 150 mA load. Quiescent current is less than 1 µA in shutdown mode and typically 14 µA during sleep mode. It includes logic-controlled enable, thermal shutdown, and short-circuit current limit protection, functioning reliably across a junction temperature range of −40°C to +125°C.

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

• Integrated sleep mode reduces quiescent current consumption during standby operations to extend battery life.
• Stable operation guaranteed with minimum 1 µF low ESR ceramic output capacitors.
• Includes logic-controlled enable pin for power management and internal thermal shutdown protection.

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

• CDMA cellular handsets
• GSM cellular handsets
• Portable information appliances
• µP/DSP Power Supplies

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

Verify the specific ordering suffix 'X' against official documentation to confirm tape and reel packaging specifications. Ensure compatibility with the 5-bump micro SMD package dimensions (TLA05) during PCB layout. Confirm that the selected external capacitors meet the required ESR range for stability. Validate input voltage levels do not exceed absolute maximum ratings.

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

Select this component for applications requiring minimal board space and ultra-low quiescent current in battery-powered systems. The fixed 2.5 V output suits digital logic supplies. Consider the 5-bump micro SMD package constraints for high-density designs. Verify that the application environment stays within the specified operating temperature range for optimal performance.

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

This device belongs to the LP3987 family of micropower LDO regulators designed specifically for portable electronics. It shares architectural similarities with other Texas Instruments low-power regulators but is distinguished by its integrated sleep mode and micro SMD footprint. The family targets mobile communication devices and handheld instruments where power efficiency and size are critical design parameters.

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

LP3987ITL-2.5/NOPB