LTC3676EUJ

Mfr. Part

LTC3676EUJ

Manufacturer

Linear Technology / Analog Devices

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Detailed Description

Multi-output power management IC (PMIC) designed to power modern processors and complex digital systems. Integrates several high-efficiency synchronous buck (step-down) regulators and low-noise LDO rails. Supports power-up sequencing, power-good monitoring, soft-start, fault protection, and compact board footprint. EUJ denotes the 40-lead QFN package. Suitable for ARM/SoC, FPGA, DSP, and embedded platforms that need multiple regulated rails from a single IC.

Key Features

Multiple synchronous buck regulators for core, memory, and I/O rails

Integrated LDO regulators for low-noise auxiliary supplies

Programmable sequencing and power-good signals for reliable start-up

Soft-start, overcurrent protection, undervoltage lockout, and thermal shutdown

High switching frequency for small external components and low ripple

Low quiescent power for efficient standby operation

Wide input range typical of portable and industrial supplies (consult datasheet for exact limits)

Exposed thermal pad for improved heat dissipation

RoHS-compliant, lead-free package option

Key Advantages

One IC manages several rails, reducing BOM, area, and design time

High efficiency step-down stages cut heat and extend battery life

Clean LDO outputs improve analog and RF performance

Built-in sequencing and status pins simplify processor power-up logic

Robust protection increases system reliability

Compact QFN saves space and enables dense layouts

Packaging

Type: QFN-40 with exposed thermal pad (EUJ code)

Material: Molded plastic (epoxy) package, lead-free, RoHS compliant

Size: Approx. 6 mm × 6 mm body (consult datasheet for exact mechanical drawing)

Pin configuration: 40 pins; typical functions include VIN, SW, PGND, FB, EN, PGOOD, LDO inputs/outputs, and I/O control pins (see datasheet for the definitive pinout)

Thermal characteristics: Exposed pad for direct PCB heat sinking; thermal shutdown on die (datasheet provides θJA/θJC and layout guidance)

Electrical properties: Multiple adjustable rails, high switching frequency, protection features; exact voltage/current limits and tolerances are specified in the datasheet

Lifecycle

Status: Active for most programs and widely used in embedded designs

Not nearing discontinuation based on current market information

Equivalent/alternative models (selection depends on required currents, rails, control features, and pinout; verify details in datasheets):

- LTC3676-1 and LTC3676-2 (family variants with different rail configurations/behavior)

- LTC3675 (similar multi-rail PMIC for portable devices)

- LTC3677 (higher-current multi-rail solution)

- ADP5054 / ADP5034 (Analog Devices multi-output PMIC families; different architectures and pinouts)

If you need a drop-in match or a fully vetted substitute, please contact our sales team via the Y-IC website for tailored recommendations

Key Application Areas

Application processors (ARM/SoC), single-board computers

FPGAs, CPLDs, and high-speed digital logic

DSPs and microcontrollers requiring multiple rails

Industrial handhelds, portable instruments, and embedded systems

IoT gateways, medical electronics, and communications modules

Imaging, sensors, and mixed-signal subsystems needing low-noise rails

Datasheet

Y-IC hosts the most authoritative datasheet for LTC3676EUJ on this product page. We recommend downloading it here to get exact specifications, pinout, electrical limits, layout guidance, and application notes.

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