How is the current limit set?

The current limit threshold is set by connecting an external resistor (Rset) between the ISET pin and GND. The formula is Iset = 60K / Rset, with Rset ≥ 22KΩ.

What protection features are included?

It includes overcurrent protection, overtemperature protection, and undervoltage lockout (UVLO) to ensure safe operation.

What are the typical applications?

It is commonly used in computer USB ports, USB hubs, and chargers to manage power distribution and protect against faults.

What should sourcing teams check before buying CH217K?

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

What is the pinout of CH217K?

Use the CH217K datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about CH217K pinout to locate pins, power rails, and interface signals before layout.

CH217K Datasheet, Specs, Alternatives & ECAD | WCH

AI summary

The CH217 is a programmable USB power switch IC providing reliable overcurrent and thermal protection for USB ports.

Best for

USB power distribution
Port protection in hubs

Avoid if

Applications requiring > 2.7A
High-temperature environments exceeding 85°C

Check before use

Ensure Rset resistor value is within the recommended range (≥ 22KΩ)

Key specifications

Input Voltage: 2.7V - 5.5V
Max Current: 2.7A
On-Resistance: 70 mΩ

Compliance & Environment

RoHS: -
REACH: -
MSL: -
ECCN: -
HTSUS: -

Application

USB HubsPower Distribution

Datasheet

eb4d5fb19ee782d8c8a2e1fb095d693d_2406141647_WCH-Jiangsu-Qin-Heng-CH217K_C7462749.pdf

800 KB

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CAD Models

Download ECAD models for CH217K: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol

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PCB Footprint

Land pattern for PCB layout

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3D Model

STEP file for mechanical design

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KiCad Library

Verified KiCad 8 symbol, footprint, and 3D model

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The CH217 is a USB port power switch IC with adjustable current limiting, designed to protect power systems from short circuits and overcurrent conditions.

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 CH217?+×

How is the current limit set?+×

What protection features are included?+×

What are the typical applications?+×

What should sourcing teams check before buying CH217K?+×

What is the pinout of CH217K?+×