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LTC4065LX Dataheets PDF



Part Number LTC4065LX
Manufacturers Linear
Logo Linear
Description Standalone 250mA Li-Ion Battery Charger
Datasheet LTC4065LX DatasheetLTC4065LX Datasheet (PDF)

LTC4065L/LTC4065LX/ LTC4065L-4.1/LTC4065LX-4.1 Standalone 250mA Li-Ion Battery Charger in 2 × 2 DFN FEATURES nn Charge Current Programmable up to 250mA with 5% Accuracy nn Complete Linear Charger in 2mm × 2mm DFN Package nn C/10 Charge Current Detection Output nn Timer Termination nn No External MOSFET, Sense Resistor or Blocking Diode Required nn Preset Float Voltage with 0.6% Accuracy: 4.2V for LTC4065L/LTC4065LX 4.1V for LTC4065L-4.1/LTC4065LX-4.1 nn Constant-Current/Constant-Voltage Operat.

  LTC4065LX   LTC4065LX


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LTC4065L/LTC4065LX/ LTC4065L-4.1/LTC4065LX-4.1 Standalone 250mA Li-Ion Battery Charger in 2 × 2 DFN FEATURES nn Charge Current Programmable up to 250mA with 5% Accuracy nn Complete Linear Charger in 2mm × 2mm DFN Package nn C/10 Charge Current Detection Output nn Timer Termination nn No External MOSFET, Sense Resistor or Blocking Diode Required nn Preset Float Voltage with 0.6% Accuracy: 4.2V for LTC4065L/LTC4065LX 4.1V for LTC4065L-4.1/LTC4065LX-4.1 nn Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating nn Charge Current Monitor Output for Gas Gauging nn Automatic Recharge nn Charges Single Cell Li-Ion Batteries Directly from USB Port nn 20µA Supply Current in Shutdown Mode nn Available Without Trickle Charge (LTC4065LX/ LTC4065LX-4.1) nn Tiny 6-Lead (2mm × 2mm) DFN Package APPLICATIONS nn Charger for Li-Ion Coin Cell Batteries nn Portable MP3 Players, Wireless Headsets nn Bluetooth Applications nn Multifunction Wristwatches All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 6522118, 6700364. DESCRIPTION The LTC®4065L is a complete constant-current/constantvoltage linear charger for single-cell lithium-ion batteries. Its small size and ability to accurately regulate low charge currents make the LTC4065L especially well-suited for portable applications using low capacity rechargeable lithium-ion cells. Furthermore, LTC4065L is specifically designed to work within USB power specifications. The CHRG pin indicates when charge current has dropped to ten percent of its programmed value (C/10). An internal timer terminates charging according to battery manufacturer specifications. The LTC4065L-4.1/LTC4065LX-4.1 features a constantvoltage float voltage of 4.1V. This 4.1V version of the standard LTC4065L/LTC4065LX is intended for back-up or high ambient temperature applications. Under these conditions, a reduced float voltage will trade-off initial cell capacity for the benefit of increased capacity retention over the life of the battery. A reduced float voltage also minimizes swelling in prismatic and polymer cells. When the input supply (wall adapter or USB supply) is removed, the LTC4065L automatically enters a low current state, dropping battery drain current to less than 1µA. With power applied, LTC4065L can be put into shutdown mode, reducing the supply current to less than 20µA. The full-featured LTC4065L also includes automatic recharge, low-battery charge conditioning (trickle charging) and soft-start (to limit inrush current). TYPICAL APPLICATION Standalone Li-Ion Battery Charger VIN 4.3V TO 5.5V C1 1µF R1 510Ω VCC BAT LTC4065L CHRG PROG EN GND 100mA + 4.2V Li-Ion R3 BATTERY 2k 4065L TA01 CHARGE CURRENT (mA) Complete Charge Cycle (180mAh Battery) LTC4065L and LTC4065LX 110 100 4.3 90 CONSTANT 80 CURRENT 70 CONSTANT VOLTAGE 4.1 60 CHRG 3.9 50 TRANSITION 40 3.7 30 20 10 0 0 CHARGE TERMINATION 3.5 VCC = 5V RPROG = 2k 3.3 0.5 1 1.5 2 2.5 3 3.5 4 4.5 TIME (HOURS) 4065 TA02 Document Feedback For more information www.analog.com BATTERY VOLTAGE (V) Rev. D 1 LTC4065L/LTC4065LX/ LTC4065L-4.1/LTC4065LX-4.1 ABSOLUTE MAXIMUM RATINGS (Note 1) VCC t < 1ms and Duty Cycle < 1%...................– 0.3V to 7V Steady State.............................................. –0.3V to 6V BAT, CHRG.................................................... –0.3V to 6V EN, PROG..........................................–0.3V to VCC + 0.3V BAT Short-Circuit Duration.............................Continuous BAT Pin Current....................................................275mA PROG Pin Current..............................................1.342mA Junction Temperature (Note 6).............................. 125°C Operating Temperature Range (Note 2)....– 40°C to 85°C Storage Temperature Range.................... –65°C to 125°C PIN CONFIGURATION TOP VIEW GND 1 CHRG 2 7 BAT 3 6 PROG 5 EN 4 VCC DC PACKAGE 6-LEAD (2mm × 2mm) PLASTIC DFN TJMAX = 125°C, θJA = 60°C/W (NOTE 3) EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4065LEDC#PBF LTC4065LEDC#TRPBF LCBD 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C LTC4065LXEDC#PBF LTC4065LXEDC#TRPBF LCKS 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C LTC4065LEDC-4.1#PBF LTC4065LEDC-4.1#TRPBF LGGN 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C LTC4065LXEDC-4.1#PBF LTC4065LXEDC-4.1#TRPBF LHBJ 6-Lead (2mm × 2mm) Plastic DFN –40°C to 85°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. LTC4065 Options PART NUMBER LTC4065 LT.


LTC4065L LTC4065LX LTC4065L-4.1


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