CN3781 Datasheet, Specs, Alternatives & ECAD | CONSONANCE | PartGenie

AI summary

CN3781 product

The CN3781 is a high-performance PWM buck charger IC for single-cell Li-ion batteries, featuring adaptive input current limiting and a wide 4.83V-28V input range.

Best for

Portable power banks
Industrial and medical portable equipment

Avoid if

Applications requiring integrated power switches

Check before use

Ensure the external P-channel MOSFET and inductor are sized correctly for the target charging current.

Key specifications

Input Voltage: 4.83V - 28V
Max Charge Current: 4A
Switching Frequency: 300kHz

Compliance & Environment

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

Application

Power ManagementPortable Electronics

Datasheet

bcad0f454534598da69b5b22258709be_2009231205_ShangHai-Consonance-Elec-CN3781_C840498.pdf

800 KB

CAD Models

Download ECAD models for CN3781: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol

Schematic symbol for your EDA tool

PCB Footprint

Land pattern for PCB layout

3D Model

STEP file for mechanical design

KiCad Library

Verified KiCad 8 symbol, footprint, and 3D model

Generate library

Alternative components

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

Design and risk insights

Questions & answers

The CN3781 is a PWM step-down battery charger IC designed for single-cell Li-ion batteries, capable of delivering up to 4A of charging current.