LTC1732EMS-8.4 Linear Technology, LTC1732EMS-8.4 Datasheet
LTC1732EMS-8.4
Specifications of LTC1732EMS-8.4
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LTC1732EMS-8.4 Summary of contents
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... Programmable for Constant-Current-Only Mode Battery Insertion Detect and Automatic Charging of Low-Battery Automatic Battery Recharge U APPLICATIO S Cellular Phones Handheld Computers Charging Docks and Cradles Digital Cameras and Camcorders , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO 400mA 2-Cell 8.4V Li-Ion Battery Charger ...
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... PROG PROG Pin Source Current, V 5mV PROG R =19.6k PROG I = 5mA ACPR CHRG I = 5mA CHRG – 2V DRV INFORMATION ORDER PART NUMBER TOP VIEW 10 ACPR LTC1732EMS-8.4 9 SENSE DRV 6 PROG MS10 PART MARKING MS10 PACKAGE LTWW = 180 C/W JA MIN TYP MAX 8 8.316 8.4 8.484 ...
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... R = 0.2 PROG SENSE C = 0.1 F TIMER V from High to Low BAT Note 2: The LTC1732EMS-8.4 is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls. Trickle Charge Current vs Temperature 19.6K PROG ...
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LTC1732-8 TYPICAL PERFOR A CE CHARACTERISTICS Trickle Charge Threshold Voltage vs Temperature 4. 4.93 4.92 4.91 4.90 – –50 100 TEMPERATURE ( C) 1732-8.4 G04 Battery Charge Current vs V ...
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PIN FUNCTIONS BAT (Pin 1): Battery Sense Input. A bypass capacitor more is required to keep the loop stable when the battery is not connected. A precision internal resistor divider sets the final ...
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LTC1732-8.4 W BLOCK DIAGRA UNDERVOLTAGE LOCKOUT V = 8.2V CC CHRG 3 C/10 STOP RECHRG 35 A ACPR SHDN TIMER 4 OSCILLATOR ACPR 10 C3 BATTERY CURRENT I = (2.457V • 800 )/(R BAT PROG ...
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U OPERATIO The LTC1732-8 linear battery charger controller. The charge current is programmed by the combination of a program resistor (R ) from the PROG pin to ground PROG and a sense resistor (R ) between the V ...
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LTC1732-8 APPLICATIONS INFORMATION Charger Conditions The charger is off when any of the following conditions exist: the V pin is less than 8.2V, the dropout voltage ( less than 54mV, or the PROG pin ...
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U U APPLICATIONS INFORMATION + 400k 2k 3 CHRG OUT LTC1732-8.4 IN Figure 1. Microprocessor Interface Table 1. Microprocessor Interface IN OUT CHARGE STATUS LOW HIGH Charge LOW Hi-Z C/10 HIGH Hi-Z Stop Charging When the ...
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LTC1732-8 APPLICATIONS INFORMATION Constant-Current Only Mode The LTC1732-8.4 can be used as a programmable current source by connecting the TIMER pin to V particularly useful for charging NiMH or NiCd batteries. In the constant-current only mode, the timer ...
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... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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. ...
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... Complete Li-Ion Linear Charger with Thermistor Interface LTC4053 USB Compatible Li-Ion Linear Battery Charger TM LTC4412 Low Loss PowerPath Controller in ThinSOT ThinSot and PowerPath are trademarks of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 V = 10V ...