Electronic Components Datasheet Search |
|
LTC4058 Datasheet(PDF) 1 Page - Linear Technology |
|
LTC4058 Datasheet(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LTC4058-4.2/LTC4058X-4.2 sn405842 405842fs Standalone Linear Li-Ion Battery Charger with Thermal Regulation in DFN s Programmable Charge Current Up to 950mA s Complete Linear Charger in DFN Package s No MOSFET, Sense Resistor or Blocking Diode Required s Thermal Regulation Maximizes Charge Rate Without Risk of Overheating* s Battery Kelvin Sensing Improves Charging Accuracy s Charges Directly from a USB Port s C/10 Charge Termination s Preset 4.2V Charge Voltage with ±1% Accuracy s Charge Current Monitor Output for Gas Gauging* s Automatic Recharge s Charge Status Output s “AC Present” Output s 2.9V Trickle Charge Threshold (LTC4058) s Available Without Trickle Charge (LTC4058X) s Soft-Start Limits Inrush Current s Low Profile (3mm × 3mm × 0.75mm) DFN Package s Cellular Telephones, PDAs, MP3 Players s Bluetooth Applications , LTC and LT are registered trademarks of Linear Technology Corporation. The LTC ®4058 is a complete constant-current/constant- voltage linear charger for single cell lithium-ion batteries. Its DFN package and low external component count make the LTC4058 ideally suited for portable applications. Fur- thermore, the LTC4058 is designed to work within USB power specifications. The LTC4058 can Kelvin sense the battery terminal for more accurate float voltage charging. No external sense resistor or external blocking diode are required due to the internal MOSFET architecture. Thermal feedback regu- lates the charge current to limit the die temperature during high power operation or high ambient temperature condi- tions. The charge voltage is fixed at 4.2V and the charge current is programmed with a resistor. The LTC4058 terminates the charge cycle when the charge current drops to 10% of the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, the LTC4058 enters a low current state dropping the battery drain current to less than 2 µA. Other features include charge current monitor, undervoltage lockout, automatic recharge and status pins to indicate charge termination and the presence of an input voltage. BAT VCC BSENSE CHRG 1.65k 405842 TA01 1 µF VIN 4.5V TO 6.5V 1-CELL Li-Ion BATTERY LTC4058-4.2 600mA ACPR EN PROG GND + TIME (HOURS) 0 1.5 405842 TA02 0.5 1.0 2.25 700 600 500 400 300 200 100 0 4.75 4.50 4.25 4.00 3.75 3.50 3.25 3.00 0.25 0.75 1.25 2.0 1.75 CONSTANT VOLTAGE CONSTANT CURRENT VCC = 5V θJA = 40°C/W RPROG = 1.65k TA = 25°C Complete Charge Cycle (750mAh Battery) *US Patent 6,522,118 Single Cell Li-Ion Battery Charger with Kelvin Sense DESCRIPTIO FEATURES APPLICATIO S TYPICAL APPLICATIO |
Similar Part No. - LTC4058 |
|
Similar Description - LTC4058 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |