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Analog Devices LTC2905IDDB#TRMPBF — DC-DC Power Modules

LTC2905IDDB#TRMPBF Multi-Voltage Supervisor, 140ms Reset

MPNLTC2905IDDB#TRMPBF
End of Life

Analog Devices LTC2905IDDB#TRMPBF, Multi-Voltage Supervisor, 2 Channel, Active Low, Open Drain Output, 140ms Minimum Reset Timeout, 9 Selectable Threshold Combinations, -40°C to 85°C, 8-DFN (3x2mm) Surface Mount Package.

$4.98Ref. price · indicative, final on quote
Packaging8-WFDFN Exposed Pad
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LTC2905IDDB#TRMPBF specifications
ParameterValue
TypeMulti-Voltage Supervisor
MountingSurface Mount
Voltage - threshold9 Selectable Threshold Combinations
Number of voltages monitored2
Operating temperature-40°C ~ 85°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout140ms Minimum
Case8-WFDFN Exposed Pad

Product details

Two-rail supervisor with configurable thresholds

The LTC2905IDDB#TRMPBF monitors two supply rails and asserts an active-low reset when either falls below its programmed threshold. Nine selectable threshold combinations cover common voltage pairs without external resistor dividers. The open-drain output stays low for a minimum of 140 ms after both rails recover, giving the downstream MCU or FPGA time to stabilize its internal regulators and clock before release. That minimum timeout is the number to design around for your system's power-on reset hold time.

The exposed pad is typically tied to ground on the PCB. Surface-mount assembly is standard, but the small pitch means solder paste stencil aperture should match the datasheet land pattern recommendation to avoid bridging.

Frequently asked questions

What are the pin-compatible alternatives to LTC2905IDDB#TRMPBF?

The ADM6305D3ARJZ1-RL7 from Analog Devices is a functional peer with the same active-low open-drain output and 140 ms minimum reset timeout, but it operates over a -40°C to 125°C range and comes in an SOT-23 package rather than DFN. Verify pin compatibility against your layout before substituting.

Does LTC2905IDDB#TRMPBF support a manual reset input?

The available specifications do not mention a manual reset input. The part provides an active-low open-drain reset output triggered by undervoltage on either monitored rail, with a 140 ms minimum timeout.

What is LTC2905IDDB#TRMPBF's listed type and reset configuration?

It is a Multi-Voltage Supervisor with an Active Low, Open Drain or Open Collector output. It monitors two voltage channels and asserts reset when either falls below its programmed threshold.