LT3009ESC8-1.5#TRMPBF

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

The LT3009ESC8-1.5#TRMPBF is a micropower low dropout linear regulator from Analog Devices, featuring a fixed 1.5V output and 20mA current capability. It operates with an input voltage range of 1.6V to 20V and delivers a typical dropout voltage of 280mV at full load. Quiescent current is 3μA, dropping below 1μA in shutdown mode. The device ensures ±2% output tolerance across line, load, and temperature variations. It is designed for stability with low ESR ceramic capacitors and includes internal protection against current limiting, thermal overload, reverse battery, and reverse current conditions.

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

• Ultralow quiescent current consumption of 3μA with less than 1μA in shutdown state
• Integrated protection circuitry including current limit, thermal limit, reverse-battery, and reverse-current protection
• Optimized stability with low ESR ceramic output capacitors requiring only 1μF minimum
• Fixed 1.5V output with ±2% accuracy over load, line, and temperature ranges

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

• Low current battery-powered systems
• Keep-alive power supplies
• Remote monitoring utility meters
• Hotel door locks

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

Verify the specific ESC8 package variant and lead-free finish (#TRMPBF) against the official Analog Devices ordering information table. Confirm that the fixed 1.5V output specification matches the design requirements. Ensure compatibility with the 8-lead SC70 footprint and check for any restricted supply status or obsolescence notices directly from the manufacturer before finalizing procurement.

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

Select this component for applications requiring moderate drive capability combined with ultralow standby power. The fixed 1.5V output eliminates external resistor dividers, simplifying design. Verify that the input voltage remains within the 1.6V to 20V range and that the load current does not exceed 20mA. Consider thermal dissipation limits based on the junction temperature maximum of 125°C when calculating power handling under worst-case conditions.

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

This part belongs to the LT3009 series of micropower LDO regulators. The series offers various fixed output voltages and an adjustable version. It is available in 6-lead DFN and 8-lead SC70 packages. The ESC8 designation indicates the industrial temperature grade (-40°C to 125°C) and the specific SC70 plastic package configuration.

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

LT3009ESC8-1.5#PBF (Tray packaging alternative)