Mfr Part #:

LP3718

The LP3718 is a highly integrated, self-powered primary-side regulation (PSR) control IC designed for isolated adapters and chargers. It simplifies external circuitry and offers robust protection features.

✓ Total Stock: 1,998 pcs

$ Price Range: $1.88

LP3718 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
ACK ELEKTRONIK ✓ Non-Authorised Inventory information	1,998 pcs On Request	1998 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

LP3718 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Pollycontact
ESD Protection	2 KV
Storage Temperature	°C ~ °C
Tape & Reel	Tape & Reel

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LP3718 Description

Short technical summary and product information.

The LP3718 from Pollycontact is a highly integrated primary-side regulation (PSR) control IC designed for simplified isolated adapter and charger applications. It features a built-in startup circuit, eliminating the need for external startup resistors, and utilizes self-powering technology to remove the auxiliary winding VCC power supply diode.

The device allows for adjustable primary-side peak current and output constant current/voltage points through external resistors. It incorporates output cable compensation for improved voltage regulation and integrates multiple protection functions, including VCC clamp/undervoltage protection, FB resistor open-circuit protection, output short-circuit protection, output overvoltage protection, and overtemperature protection.

The LP3718 is available in SOP8L, ASOP6, and DIP7 packages. It is suitable for applications up to 24W, including adapters, chargers, LED driver power supplies, and as an upgrade for linear and RCC switching power supplies.

LP3718 Quick Information

Product Type: Primary-Side Regulation Control IC

Canonical Name: LP3718 Primary-Side Regulation Control IC

Subcategory: Power Management ICs

LP3718 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

LP3718 Estimated Pricing

Qty	Low	High
1+	$1.88	$1.88

Estimated market price range - modelled values for guidance only, not live distributor offers.

LP3718 Features

Highly integrated PSR control IC.
Built-in startup circuit, no startup resistor.
Self-powering technology eliminates auxiliary winding diode.
Adjustable peak current and output settings.
Integrated protection features for reliability.

LP3718 Applications

Isolated adapter and charger designs.
LED driver power supplies.
Linear power supply upgrades.
RCC switching power supply upgrades.

LP3718 FAQs

5 frequently asked questions generated from this part’s specifications.

What are the available package types for the LP3718?

The LP3718 is available in SOP8L, ASOP6, and DIP7 packages.

What is the maximum output power for the LP3718CD?

The LP3718CD supports a maximum output power of 24W for a 90VAC~265VAC input.

Does the LP3718 require a startup resistor?

No, the LP3718 has a built-in startup circuit and does not require an external startup resistor.

What protection features are integrated into the LP3718?

The LP3718 integrates VCC clamp/undervoltage protection, FB resistor open-circuit protection, output short-circuit protection, output overvoltage protection, and overtemperature protection.

What is the VCC clamp voltage for the LP3718?

The VCC clamp voltage is typically 5.1V at an ICC of 10mA.