What are the key protection features?

It includes cycle-by-cycle peak/valley current limiting, hic-cup mode output short-circuit protection, thermal shutdown with auto-recovery, and output auto-discharge.

What is the recommended output capacitor?

The datasheet recommends using an X5R or better grade ceramic capacitor with a 16V rating and a capacitance of at least 22µF for best performance.

How is the output voltage programmed?

The output voltage is programmed using an external resistor divider connected to the FB pin, calculated by the formula: VOUT = 0.6V × (1 + RH/RL).

What is the supply chain status?

The part is currently active and widely available through major distributors, with moderate supply risk.

What should sourcing teams check before buying SM8103ADC?

Check lifecycle (Active), compliance data, distributor availability, and approved-source coverage. Current sourcing signal: Low; readiness: easy.

What is the pinout of SM8103ADC?

Use the SM8103ADC datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about SM8103ADC pinout to locate pins, power rails, and interface signals before layout.

SM8103ADC Datasheet, Specs, Alternatives & ECAD | silergy

AI summary

The SM8103ADC is a robust 3A synchronous step-down regulator suitable for 18V input applications requiring high efficiency and fast transient response.

Best for

Set-top boxes
Portable electronics
Networking equipment

Avoid if

Applications requiring >18V input
Extremely space-constrained designs where thermal dissipation is impossible

Check before use

Ensure the inductor saturation current is sufficient for the peak load

Key specifications

Input Voltage: 4.2V - 18V
Max Output Current: 3A
Switching Frequency: 500kHz
Package: TSOT23-6

Compliance & Environment

RoHS: Compliant
REACH: nan
MSL: nan
ECCN: nan
HTSUS: nan

Application

Power ManagementConsumer Electronics

Datasheet

0a6fe927401f30e1f78cdf1caca773b4.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SM8103ADC: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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PCB Footprint

Land pattern for PCB layout

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3D Model

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Verified KiCad 8 symbol, footprint, and 3D model

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Alternative components

Part	Details	Match
SY8113IADCsilergy	A strong alternative with matching key parameters, package, and pinout from the same manufacturer.	Needs validation

Design and risk insights

Questions & answers

The SM8103ADC is a 500kHz synchronous step-down DC/DC regulator from Silergy, capable of delivering up to 3A of output current from an input voltage range of 4.2V to 18V.

SY8105IADCsilergy	A pin-compatible upgrade with higher 5A current capability; check minimum input voltage.	Needs validation
SY8113BADCsilergy	A functional alternative with a slightly higher minimum input voltage requirement.	Needs validation
SY8156IADCsilergy	A functional alternative with higher current but different switching frequency, requiring redesign.	Needs validation

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Alternative components

Design and risk insights

Questions & answers

What is the SM8103ADC?+×

What are the key protection features?+×

What is the recommended output capacitor?+×

How is the output voltage programmed?+×

What is the supply chain status?+×

What should sourcing teams check before buying SM8103ADC?+×

What is the pinout of SM8103ADC?+×