LTC4052-4.2
PRODUCTIONLithium-Ion Battery Pulse Charger with Overcurrent Protection
- Part Models
- 2
- 1ku List Price
- Starting From $3.14
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
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 1
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 | ||
| LTC4052EMS8E-4.2#TRPBF | 8-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| 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 |
||
| LTC4052EMS8E-4.2#PBF | PRODUCTION | |
| LTC4052EMS8E-4.2#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Monitors & Fuel Gauges 1 | ||
| LTC2942 | Obsolete | Battery Gas Gauge with Temperature, Voltage Measurement |
Evaluation Kits
LTC4052EMS8E-4.2 | Li-Ion Battery Pulse Charger, VIN = 4.5V to 10V, 1A Limit, VBAT = 4.2V
Resources
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