Analog Devices Inc. LTC3104EMSE#PBF

Overview

LTC3104EMSE#PBF from Analog Devices is an ultralow-quiescent-current synchronous step-down DC/DC converter with an integrated 10mA LDO regulator. The device is designed for always-on and battery-powered systems that need efficient 300mA buck conversion from inputs up to 15V while maintaining very low standby current.

As part of the LTC3104 product family, LTC3104EMSE#PBF combines 2.6uA quiescent current, synchronous rectification, 300mA output capability, 1.2MHz fixed-frequency PWM operation, Burst Mode or forced continuous mode, programmable RUN threshold, power-good status, and a 10mA adjustable LDO. For engineers reviewing the LTC3104EMSE#PBF datasheet, LTC3104EMSE#PBF pinout, LTC3104EMSE#PBF application, or LTC3104EMSE#PBF equivalent, this device is widely used in automotive always-on rails, industrial sensors, battery-powered instruments, standby supplies, low-power microcontroller systems, and compact embedded power architectures.

Technical Context

In low-power embedded systems, LTC3104EMSE#PBF operates as a synchronous buck regulator that steps a 2.5V to 15V input down to a regulated output between 0.6V and 13.8V. Synchronous rectification improves efficiency, especially at moderate loads compared with diode-based converters.

The 2.6uA quiescent current makes the device suitable for standby rails and always-on loads. Designers can use automatic Burst Mode operation for very low power consumption or forced continuous operation when predictable switching behavior and lower ripple are more important.

LTC3104EMSE#PBF is commonly used in systems that need a small 300mA buck rail, a 10mA auxiliary LDO, programmable input undervoltage threshold, and power-good reporting from a compact thermally enhanced MSOP package.

Key Specifications

Pinout & Package

The LTC3104EMSE#PBF pinout includes input supply, switch node, feedback, RUN threshold control, mode selection, power-good output, LDO output, and ground/thermal pins.

For PCB design, the inductor and ceramic capacitors should be placed close to the switch node, feedback should be routed quietly, and the LDO output capacitor should be close to the LDO pin.

Key Features

• 2.6uA quiescent current supports standby rails.
• 15V input range fits automotive, industrial, and battery sources.
• 300mA synchronous buck output improves efficiency.
• 10mA LDO supports auxiliary bias rails.
• 1.2MHz switching enables compact passives.
• Power-good and programmable RUN threshold support system control.

Applications

Equivalent & Alternatives

When evaluating a LTC3104EMSE#PBF equivalent, engineers should compare input range, quiescent current, 300mA output capability, LDO output, Burst Mode behavior, switching frequency, package, and power-good function.

Compared with LTC3104EDE#PBF, LTC3104EMSE#PBF is selected when the MSOP package is required. LTC3104EMSE#PBF vs TPS62177 selection depends on whether the design needs the integrated 10mA LDO, package compatibility, quiescent current, and output-current requirements.

Quality

LTC3104EMSE#PBF should be sourced as original Analog Devices components through traceable supply channels. Quality checks may include MSOP package inspection, top-mark validation, solderability testing, and buck/LDO output verification.

Production validation should include low-IQ current, Burst Mode behavior, forced continuous operation, power-good timing, output accuracy, thermal behavior, and layout-sensitive switching ripple.

Availability

LTC3104EMSE#PBF available at Aetrix Electronics and is suitable for always-on, industrial, battery, sensor, standby, and microcontroller power systems.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming package, output voltage, quiescent-current target, LDO need, lifecycle status, and sourcing continuity helps reduce procurement risk.

Manufacturer

Analog Devices is a global semiconductor manufacturer specializing in analog ICs, power management, mixed-signal products, data converters, RF solutions, sensors, and embedded signal-chain technologies for industrial, communication, automotive, healthcare, and consumer applications.

The LTC3104 product family is an ultralow-quiescent-current synchronous buck regulator series with an integrated 10mA LDO for always-on and battery-powered systems.

FAQ

What is LTC3104EMSE#PBF used for?

LTC3104EMSE#PBF is used for always-on rails, industrial sensors, battery instruments, standby supplies, and low-power microcontroller systems.

Where can I find the LTC3104EMSE#PBF datasheet download?

The LTC3104EMSE#PBF datasheet is available from Analog Devices and includes electrical ratings, package data, pin descriptions, and application guidance.

What should be considered in LTC3104EMSE#PBF pinout design?

Designers should keep the SW loop compact, route feedback quietly, place the LDO capacitor close, and set the RUN threshold for the input source.

Does LTC3104EMSE#PBF include an LDO?

Yes. It includes a 10mA adjustable LDO in addition to the 300mA synchronous buck regulator.

What are common LTC3104EMSE#PBF equivalent solutions?

Common candidates include LTC3104EDE#PBF and TPS62177 depending on package, LDO need, quiescent current, and output-current requirements.