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LTC4054ES5-4.2#TRPBF

ADILTC4054ES5-4.2#TRPBF

Analog Devices Inc.
Charger IC Lithium Ion TSOT-23-5
Active3,647 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The LTC4054ES5-4.2 is a single-cell linear Li-Ion battery charger IC from Linear Technology (now Analog Devices) in a TSOT-23-5 package. It provides a programmable constant-current/constant-voltage charge profile with a 4.2V termination voltage and up to 800mA charge current capability. The device is intended for compact, low-cost single-cell Li-Ion charging where a small footprint and simple external components are desired.

Why Choose This Part

The LTC4054ES5-4.2 is attractive when you need a compact, easy-to-design linear charger for a single Li-Ion cell. Its TSOT-23-5 package and minimal external component count let you implement charging in very space-constrained designs. Programmable charge current and built-in termination simplify meeting battery vendor recommendations without complex firmware.

Applications

Portable consumer electronics
Charging single-cell Li-Ion batteries in small devices like fitness trackers, headsets, and handheld instruments.
Battery-powered sensors and IoT nodes
On-board charging for single-cell battery-powered sensors and remote IoT devices where board space is limited.
USB-powered chargers
Simple USB or single-cell adapters that need a regulated 4.2V charge cycle with programmable current.
Battery backup and maintenance
Trickle/maintenance charging in devices that need safe, periodic top-up charging of a single Li-Ion cell.

Key Specifications

Mounting Type Surface Mount
Package / Case SOT-23-5 Thin, TSOT-23-5
Number of Cells 1
Battery Chemistry Lithium Ion
Current - Charging Constant - Programmable
Battery Pack Voltage 4.2V
Charge Current - Max 800mA
Operating Temperature -40degC ~ 85degC (TA)
Voltage - Supply (Max) 6.5V
Supplier Device Package TSOT-23-5

Getting Started

There is no microcontroller or IDE required; getting started typically means placing the TSOT-23-5 part on your PCB, adding the recommended input bypass capacitor, battery connection, and a single RPROG resistor to set charge current per the datasheet. Check Analog Devices application notes and the LTC4054 datasheet for recommended layouts, thermal considerations, and RPROG calculation examples before first prototype.

Part of Linear Tech / ADI LT Series family » LTC4054ES5

LTC4054ES5 Family

Part NumberDifferenceStock
LTC4054ES5-4.2#TRMPBF MPBF 884
LTC4054ES5-4.2#PBF (Analog Devices (Linear Technology)) PBF —

Also Consider

MCP73831 (SOT-23-5) MCHPMicrochip Technology - Widely used, single-cell linear Li-Ion charger in a small SOT-23-5 package with simple external components and programmable charge current; good for low-cost, space-constrained designs.
TP4056 Various (common linear charger IC) - Popular low-cost single-cell linear Li-Ion charger IC commonly used on small charging modules; simple to use for USB-powered applications.

Categories

Power Management > Battery Management