Analog Devices Inc. LTC1704BEGN#PBF

Overview

LTC1704BEGN#PBF from Analog Devices / Linear Technology is a dual-output power controller combining a high-power synchronous buck regulator controller and a linear regulator controller. The device is designed for distributed power, FPGA, logic, and embedded systems that need one efficient high-current switching rail plus one auxiliary linear rail from a compact 16-pin SSOP controller.

As part of the LTC1704/LTC1704B product family, LTC1704BEGN#PBF combines 550kHz true PWM operation, external N-channel MOSFET drive, high DC accuracy, no external current-sense resistor, a programmable linear regulator current limit, programmable linear startup delay, low shutdown current, and a PGOOD flag monitoring both outputs. For engineers reviewing the LTC1704BEGN#PBF datasheet, LTC1704BEGN#PBF pinout, LTC1704BEGN#PBF application, or LTC1704BEGN#PBF equivalent, this device is widely used in FPGA supplies, multiple logic supply generators, distributed power modules, embedded processor boards, high-efficiency point-of-load converters, and auxiliary linear rail systems.

Technical Context

In dual-output embedded power supplies, LTC1704BEGN#PBF uses the synchronous buck controller to drive a pair of external N-channel MOSFETs in a voltage-mode architecture for the main high-current rail. The LTC1704B version runs continuously at light load, reducing low-frequency ripple compared with Burst Mode behavior.

The linear regulator controller drives an external NPN pass transistor and can supply up to 2A to an auxiliary load. The switcher output accuracy is better than +/-1.5%, the linear regulator output accuracy is better than +/-2%, and the PGOOD flag indicates when both outputs are within the regulation window.

LTC1704BEGN#PBF is commonly used when a board needs 550kHz switching to reduce external component size, external MOSFET current scalability, coordinated switching and linear rails, programmable linear current limit, programmable startup delay, and a small narrow-SSOP footprint.

Key Specifications

Pinout & Package

The LTC1704BEGN#PBF pinout includes synchronous buck gate-drive pins, switch-node/bootstrap functions, feedback and compensation pins, linear regulator drive and feedback pins, PGOOD output, shutdown/control pins, and ground.

For PCB design, MOSFET gate-drive loops should be short, feedback traces should avoid the switch node, the external NPN pass transistor should be thermally planned, and PGOOD routing should be kept away from high-current switching paths.

Key Features

• 550kHz synchronous buck control reduces external component size.
• External MOSFET power stage supports scalable current.
• Continuous LTC1704B switching reduces low-frequency output ripple at light load.
• Linear regulator controller supports an auxiliary 2A rail.
• PGOOD monitors both outputs for system supervision.
• Low shutdown current supports power-managed systems.

Applications

Equivalent & Alternatives

When evaluating a LTC1704BEGN#PBF equivalent, engineers should compare switching frequency, external MOSFET architecture, linear-regulator current, PGOOD behavior, light-load mode, package, and current-sense method.

Compared with LTC1704EGN#PBF, LTC1704BEGN#PBF is better suited when continuous light-load switching and lower low-frequency ripple are preferred. LTC1704BEGN#PBF vs MAX15022ATI+ selection depends on whether the board needs the LTC1704B dual controller architecture or a more integrated multi-output PMIC.

Quality

LTC1704BEGN#PBF should be sourced as original Analog Devices / Linear Technology components through traceable supply channels. Quality checks may include SSOP package inspection, top-mark validation, solderability testing, gate-drive waveform review, switcher output verification, linear output verification, and PGOOD behavior testing.

Production validation should include load-transient response, linear current-limit behavior, startup delay, output ripple, thermal behavior of external MOSFETs and NPN pass transistor, and shutdown current.

Availability

LTC1704BEGN#PBF available at Aetrix Electronics and is suitable for FPGA, distributed power, embedded processor, logic, industrial, and high-efficiency dual-output power-control 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 SSOP package, lead-free #PBF option, external MOSFET and NPN selection, lifecycle status, lead time, and sourcing continuity helps reduce procurement risk.

Manufacturer

Analog Devices is a global semiconductor manufacturer specializing in analog ICs, mixed-signal products, power management, RF solutions, data converters, sensors, and embedded signal-chain technologies for industrial, automotive, communication, healthcare, and consumer applications. Linear Technology and Maxim Integrated power-management products are now part of the Analog Devices portfolio.

The LTC1704/LTC1704B product family is an Analog Devices / Linear Technology dual-output controller series combining a 550kHz synchronous buck controller and a linear regulator controller for distributed power and high-efficiency logic supply generation.

FAQ

What is LTC1704BEGN#PBF used for?

LTC1704BEGN#PBF is used for FPGA supplies, multiple logic supply generators, distributed power modules, embedded processor boards, high-efficiency point-of-load converters, and auxiliary linear rail systems.

Where can I find the LTC1704BEGN#PBF datasheet download?

The LTC1704BEGN#PBF datasheet is available from Analog Devices as the LTC1704/LTC1704B controller documentation.

What should be considered in LTC1704BEGN#PBF pinout design?

Designers should keep MOSFET gate-drive loops short, isolate feedback from switch-node noise, and thermally design the external NPN linear pass transistor.

Does LTC1704BEGN#PBF integrate power MOSFETs?

No. It drives external N-channel MOSFETs for the synchronous buck stage.

What are common LTC1704BEGN#PBF equivalent solutions?

Common candidates include LTC1704EGN#PBF and MAX15022ATI+ depending on ripple, rail count, package, and integration requirements.