(Hong Kong)
Product Summary
The LTC1730ES8-4.2#TR 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. 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. TheLTC1730ES8-4.2#TR prevents reverse battery current from flowing if the input voltage is shorted to ground, eliminating the need for a blocking diode. The LTC1730ES8-4.2#TR is available in the 16-pin SSOP package and the LTC1730-4.2 is available in the 8-pin SO package. Applications are Standalone Lithium-IoBattery Charger, Handheld Computers, Cellular Telephones.
Parametrics
LTC1730ES8-4.2#TR absolute maximum ratings: (1)Supply Voltage (VCC): 13.2V; (2)SENSE, GATE, BAT, TIMER, NTC/SHDN, SEL : –0.3V to VCC; (3)CHRG, ACPR, FAULT : –0.3V to 13.2V; (4)Operating Junction Temperature Range: –40℃ to 85℃; (5)Storage Temperature Range : –65℃ to 150℃; (6)Lead Temperature (Soldering, 10 sec): 300℃; (7)IMAX Maximum Charge Overcurrent RSENSE = 0.1W: 0.7 to 1.3 A; (8)ITRICKL Trickle Charge Current VBAT = 2V: 15 to 60 mA.
Features
LTC1730ES8-4.2#TR features: (1)Complete Pulse Charger for 1-Cell Lithium-IoBatteries; (2)Sense Resistor Limits Maximum Current for Safety; (3)1% Float Voltage Accuracy; (4)End-of-Charge (C/10)DetectioOutput; (5)Programmable Charge TerminatioTimer; (6)Internal 0.35W NMOS Switch; (7)No Blocking Diode Required; (8)SEL Pito Set Either 4.1V or 4.2V/Cell (LTC1730-4); (9)Low-Battery Drai(1mA Max)wheInput Supply Is Removed; (10)Battery Temperature Sensing and Charge Qualification; (11)Automatic Trickle Charge for Low-Battery; (12)Automatic Battery Refresh.
Diagrams
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 LTC1730ES8-4.2#TR |
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IC BATT PULSE CHRGR LI-ION 8SOIC |
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LTC1730ES8-4.2#TRPBF |
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IC BATT PULSE CHRGR LI-ION 8SOIC |
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