LTC4052-4.2

PRODUCTION

Lithium-Ion Battery Pulse Charger with Overcurrent Protection

Part Models: 2
1ku List Price: Starting From $2.48

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Overview

Very Low Power Dissipation: 350mW at 1A
Complete Standalone Pulse Charger for 1-Cell Lithium-Ion Batteries
Requires No Microcontroller, MOSFET or Blocking Diode
Sense Resistor Limits Maximum Current for Safety
Programmable Charge Termination Timer for
Maximum Capacity Charging
±1% Float Voltage Accuracy
Near End-of-Charge (C/10) Detection Output
AC Wall Adapter Present Output
Low Battery Drain when Input Supply Is Removed
Automatic Trickle Charge for Low Battery
Automatic Battery Refresh
Thermal Shutdown Protection
Tiny Thermally Enhanced MSOP Package

The LTC4052 is a complete standalone pulse charger with integrated MOSFET for 1-cell lithium-ion batteries.

An external sense resistor provides overcurrent limiting as a safety precaution against a user connecting a wall adapter with the incorrect or no current limit. The internal MOSFET prevents reverse battery current from flowing if the input voltage is shorted to ground, eliminating the need for a blocking diode.

As the battery accepts charge and approaches the programmed float voltage, the internal MOSFET begins switching off and on with the duty cycle gradually decreasing as the battery approaches a fully charged condition. A programmable timer terminates the charge cycle. The near end-of-charge C/10 condition is indicated at the CHRG pin when the average charge current falls to one tenth of the wall adapter current. Removing the input voltage puts the LTC4052 into a sleep mode, dropping the battery current drain to less than 1µA.

The LTC4052 is available in a tiny 8-pin thermally enhanced MSOP package.

Applications

Handheld Computers
Cellular Telephones
Cradle Chargers

Part Models: 2
1ku List Price: Starting From $2.48

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC4052EMS8E-4.2#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4052EMS8E-4.2#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC4052EMS8E-4.2#PBF	PRODUCTION
LTC4052EMS8E-4.2#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC4052EMS8E-4.2#PBF	PRODUCTION
LTC4052EMS8E-4.2#TRPBF	PRODUCTION