LT3009ESC8-1.8#TRMPBF

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

The LT3009ESC8-1.8#TRMPBF is a micropower low dropout linear regulator from Analog Devices, featuring a fixed 1.8V output and 20mA current capability. It operates within an input voltage range of 1.6V to 20V with a typical dropout voltage of 280mV at full load. The device draws only 3μA quiescent current, reducing to less than 1μA in shutdown mode. It includes internal protection against current limiting, thermal overload, reverse battery conditions, and reverse output current. The component is housed in an 8-lead SC70 package.

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

• Ultra-low quiescent current consumption of 3μA with shutdown mode below 1μA
• Stable operation with low ESR ceramic capacitors requiring a minimum of 1μF
• Integrated protection circuitry including current limit, thermal limit, and reverse-battery protection

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 ordering suffix #TRMPBF confirms tape and reel packaging for surface mount assembly. Confirm the ESC8 designation matches the required 8-lead SC70 package variant. Ensure the -1.8 suffix aligns with the target 1.8V fixed output requirement. Cross-reference the manufacturer part number with official Analog Devices documentation to validate lead-free finish and RoHS compliance status before procurement.

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

Select this regulator for applications requiring moderate drive capability combined with ultralow standby power. The fixed 1.8V output eliminates the need for external resistor dividers used in adjustable versions. Consider the 280mV dropout voltage when designing for minimal input-output differentials. Verify that the 1μF minimum output capacitance requirement fits within the system's size constraints.

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

This component belongs to the LT3009 series of micropower low dropout linear regulators. The series offers both fixed output voltages (1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V) and adjustable options down to 600mV. Available packages include 6-lead DFN and 8-lead SC70, designed for space-constrained portable electronics and battery-operated devices requiring high efficiency at light loads.

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

LT3009ESC8-1.8#TRPBF