LTC1730
Info: : PRODUCTION
searchIcon
cartIcon

LTC1730

Lithium-Ion Battery Pulse Chargers with Overcurrent Protection

Show More showmore-icon

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.04
Features
  • Complete Pulse Charger for 1-Cell Lithium-Ion Batteries
  • Sense Resistor Limits Maximum Current for Safety
  • 1% Float Voltage Accuracy
  • End-of-Charge (C/10) Detection Output
  • Programmable Charge Termination Timer
  • Internal 0.35Ω NMOS Switch
  • No Blocking Diode Required
  • SEL Pin to Set Either 4.1V or 4.2V/Cell (LTC1730-4)
  • Low-Battery Drain (1µA Max) when Input Supply Is Removed
  • Battery Temperature Sensing and Charge Qualification
  • Automatic Trickle Charge for Low-Battery Cell
  • Automatic Battery Refresh
Additional Details
show more Icon

The LTC1730 is a complete pulse charger for 1-cell lithium-ion batteries. When charging a depleted cell, the internal MOSFET is fully on allowing the current limited input power source to provide charge current to the battery, virtually eliminating heat generation in the charger.

As the battery accepts charge and approaches the programmed 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 ends the charge cycle. The end-of-charge condition is indicated at the CHRG pin when the average charge current falls to C/10. Removing the input voltage puts the LTC1730 into a sleep mode, dropping the battery current drain to less than 1µA (maximum).

An external sense resistor limits the maximum charge current 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.

The LTC1730-4 is available in the 16-pin SSOP package and the LTC1730-4.2 is available in the 8-pin SO package.

Applications

  • Standalone Lithium-Ion Battery Charger
  • Handheld Computers
  • Cellular Telephones
Part Models 4
1ku List Price Starting From $2.04

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1730EGN-4#PBF
  • HTML
  • HTML
LTC1730EGN-4#TRPBF
  • HTML
  • HTML
LTC1730ES8-4.2#PBF
  • HTML
  • HTML
LTC1730ES8-4.2#TRPBF
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

Apr 6, 2022

- 22_0066

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1730EGN-4#PBF

PRODUCTION

LTC1730EGN-4#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1730ES8-4.2#PBF

PRODUCTION

LTC1730ES8-4.2#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

arrow down

Epoxy Change from Henkel 8290 to 8290A for GN Package

Apr 6, 2022

- 22_0066

arrow down

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1730EGN-4#PBF

PRODUCTION

LTC1730EGN-4#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

Jun 16, 2021

- 21_0026

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1730ES8-4.2#PBF

PRODUCTION

LTC1730ES8-4.2#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC384A

LTC1730EGN-4 | Li-Ion Battery Pulse Charger, Single Cell, 4.1V/4.2V, Requires 1A Current Limited Input Power Source, VIN =5V to 10V

zoom

DC384A

LTC1730EGN-4 | Li-Ion Battery Pulse Charger, Single Cell, 4.1V/4.2V, Requires 1A Current Limited Input Power Source, VIN =5V to 10V

LTC1730EGN-4 | Li-Ion Battery Pulse Charger, Single Cell, 4.1V/4.2V, Requires 1A Current Limited Input Power Source, VIN =5V to 10V

Product Detail

DC384A: Demo Board for LTC1730 Lithium-Ion Battery Pulse Chargers with Overcurrent Protection.

Recently Viewed