LTC4050
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LTC4050

Lithium-Ion Linear Battery Charger Controller with Thermistor Interface

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Info: : PRODUCTION tooltip
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Part Details
Part Models 4
1ku List Price Starting From $2.72
Features
  • Complete Standalone Linear Charger Controller for 1-Cell Lithium-Ion Batteries
  • Thermistor Interface for Battery Temperature Sensing
  • Preset Charge Voltage with ±1% Accuracy
  • Programmable Charge Current
  • C/10 Charge Current Detection Output
  • Programmable Charge Termination Timer
  • Input Supply (Wall Adapter) Detection Output
  • 4.5V to 10V Input Voltage Range
  • Automatic Sleep Mode When Input Supply is Removed (Only 5µA Battery Drain)
  • Automatic Trickle Charging of Low Voltage Cells
  • Automatic Battery Recharge
  • Battery Insertion Detection
  • Space Saving 10-Pin MSOP Package
Additional Details
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The LTC4050-4.1/LTC4050-4.2 are complete standalone constant-current/constant-voltage linear charge controllers for lithium-ion (Li-Ion) batteries. Charge current is programmable and final float voltage has ±1% accuracy.

When the input supply is removed, the LTC4050 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 5µA. An internal comparator detects the near-end-of-charge (C/10) condition while a programmable timer, using an external capacitor, sets the total charge time. Fully discharged cells are automatically trickle charged at 10% of the programmed current until cell voltage exceeds 2.49V. The thermistor interface suspends charging if the cell temperature is outside of a 0°C to 50°C temperature window.

The LTC4050 begins a new charge cycle when a discharged battery is connected to the charger or when the input power is applied. In addition, a new charge cycle is automatically started if the battery remains connected to the charger and the cell voltage drops below 3.88V for 4.1V cells or below 3.98V for 4.2V cells.

The LTC4050 is available in the 10-pin MSOP package.

Applications

  • Cellular Phones
  • Handheld Computers
  • Charging Docks and Cradles
Part Models 4
1ku List Price Starting From $2.72

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4050EMS-4.1#PBF
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LTC4050EMS-4.1#TRPBF
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LTC4050EMS-4.2#PBF
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  • HTML
LTC4050EMS-4.2#TRPBF
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Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC4050EMS-4.1#PBF

PRODUCTION

LTC4050EMS-4.1#TRPBF

PRODUCTION

LTC4050EMS-4.2#PBF

PRODUCTION

LTC4050EMS-4.2#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0130

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4050EMS-4.1#PBF

PRODUCTION

LTC4050EMS-4.1#TRPBF

PRODUCTION

LTC4050EMS-4.2#PBF

PRODUCTION

LTC4050EMS-4.2#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC4050EMS-4.1#PBF

PRODUCTION

LTC4050EMS-4.1#TRPBF

PRODUCTION

LTC4050EMS-4.2#PBF

PRODUCTION

LTC4050EMS-4.2#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0130

arrow down

Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4050EMS-4.1#PBF

PRODUCTION

LTC4050EMS-4.1#TRPBF

PRODUCTION

LTC4050EMS-4.2#PBF

PRODUCTION

LTC4050EMS-4.2#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

DC530A-A

LTC4050EMS-4.1 | Li-Ion Battery Charger with NTC, VIN = 4.5V to 6V, VBAT = 4.1V, IBAT = 700mA

reference details image

DC530A-B

LTC4050EMS-4.2 | Li-Ion Battery Charger with NTC, VIN = 4.5V to 6V, VBAT = 4.2V, IBAT = 700mA

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