ltc4065edc-4.4 Linear Technology Corporation, ltc4065edc-4.4 Datasheet
ltc4065edc-4.4
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ltc4065edc-4.4 Summary of contents
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... U APPLICATIO S ■ Wireless PDAs ■ Cellular Phones ■ Portable Electronics , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6522118, 6700364. U TYPICAL APPLICATIO Standalone Li-Ion Battery Charger V IN 4.5V TO ...
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... CC EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB ORDER PART NUMBER LTC4065EDC-4.4 Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. ...
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ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are 5V 3.8V unless otherwise specified. (Note 2) CC BAT EN SYMBOL PARAMETER t Soft-Start Time ...
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LTC4065-4 TYPICAL PERFOR A CE CHARACTERISTICS Battery Regulation (Float) Voltage vs Charge Current 4. 25° PROG 4.42 4.40 4.38 4.36 100 200 400 0 300 500 I (mA) ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Undervoltage Lockout Threshold Voltage vs Temperature 4.0 3.8 RISE 3.5 3.3 FALL 3.0 2.8 2.5 –50 – 100 TEMPERATURE (°C) 4065 G16 EN Pin Current 4 ...
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LTC4065-4 CTIO S GND (Pin 1): Ground. CHRG (Pin 2): Open-Drain Charge Status Output. The charge status indicator pin has three states: pull-down, pulse at 2Hz and high impedance state. This output can be used ...
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W SI PLIFIED BLOCK DIAGRA + T DIE TA – 115° SHUTDOWN ENB – 0.82V 1.2V REF PROG 0. – C/10 R4 0.1V CHRG R5 2 – 2.9V LOBAT + BAT W ...
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LTC4065-4.4 U OPERATIO The LTC4065-4 linear battery charger designed primarily for charging single-cell lithium-ion batteries. Featuring an internal P-channel power MOSFET, the charger uses a constant-current/constant-voltage charge algo- rithm with programmable current. Charge current can be programmed up ...
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U OPERATIO Undervoltage Lockout (UVLO) An internal undervoltage lockout circuit monitors the input voltage and keeps the charger in undervoltage lockout rises above 3.6V and approximately 80mV above until V CC the BAT pin voltage. The 3.6V UVLO circuit has ...
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LTC4065-4.4 U OPERATIO CHRG Status Output Pin The charge status indicator pin has three states: pull- down, pulse at 2Hz (see Trickle Charge and Defective Battery Detection) and high impedance. The pull-down state indicates that the LTC4065-4 ...
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U OPERATIO POWER IS EN > SHUTDOWN ON THRESHOLD? SHUTDOWN MODE CHRG HIGH IMPEDANCE TRICKLE CHARGE MODE 1/10 FULL CHARGE CURRENT CHRG STRONG PULL-DOWN 1/4 CHARGE CYCLE (1.125 HOURS) DEFECTIVE BATTERY IS V < 2.9V? BAT BAD BATTERY MODE NO ...
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LTC4065-4 APPLICATIO S I FOR ATIO Undervoltage Charge Current Limiting (UVCL) The LTC4065-4.4 includes undervoltage charge (∆V current limiting that prevents full charge current until the input supply voltage reaches approximately 220mV above the battery voltage. This feature ...
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U U APPLICATIO S I FOR ATIO Stability Considerations The LTC4065-4.4 contain two control loops: constant- voltage and constant-current. The constant-voltage loop is stable without any compensation when a battery is connected with low impedance leads. Excessive lead length, however, ...
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LTC4065-4 APPLICATIO S I FOR ATIO Example: Consider an LTC4065-4.4 operating from a 5V wall adapter providing 750mA to a 3.6V Li-Ion battery. The ambient temperature above which the LTC4065-4.4 will begin to reduce the 750mA charge current ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights Package 6-Lead Plastic DFN (2mm × ...
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... OUT DC/DC Converter LTC3440 600mA (I ), 2MHz, Synchronous Buck-Boost OUT DC/DC Converter LTC4413 Dual Ideal Diode in DFN ThinSOT and PowerPath are trademarks of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● COMMENTS TM Simple ThinSOT Charger, No Blocking Diode, No Sense Resistor Needed Low Current Version of LTC1734, 50mA ≤ ...