ltc1734es6-4.2-trmpbf Linear Technology Corporation, ltc1734es6-4.2-trmpbf Datasheet
ltc1734es6-4.2-trmpbf
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ltc1734es6-4.2-trmpbf Summary of contents
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... APPLICATIO S Cellular Telephones Handheld Computers Digital Cameras Charging Docks and Cradles Low Cost and Small Size Chargers Programmable Current Sources , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. U TYPICAL APPLICATIO 80mA Li-Ion Battery Charger ...
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LTC1734L ABSOLUTE MAXIMUM (Note 1) Input Supply Voltage (V ) ..........................– 0. Input Voltage (BAT, PROG) ........ – 0. Output Voltage (DRIVE) .............. – 0. Output Current (I ) ................................... ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T otherwise noted. All current into a pin is positive and current out of a pin is negative. All voltages are referenced to GND, unless otherwise specified. SYMBOL PARAMETER Charger Manual Control ...
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LTC1734L W U TYPICAL PERFOR A CE CHARACTERISTICS I vs Temperature BAT2 and Supply Voltage 190 R = 2.1k PROG PNP = FCX589 180 V = 4.55V AND 8V CC 170 – 125 –25 100 TEMPERATURE ...
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PIN FUNCTIONS I (Pin 1): Sense Node for Charge Current. Current SENSE from V passes through the internal current sense resis- CC tor and reappears supply current to the SENSE external PNP emitter. The ...
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LTC1734L U OPERATIO The LTC1734L is a linear battery charger controller. Operation can best be understood by referring to the Block Diagram. Charging begins when V the UVLO (Undervoltage Lockout) threshold V an external program resistor is connected between the ...
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U U APPLICATIONS INFORMATION Manual Shutdown Floating the program resistor allows an internal 3 A current source ( pull the PROG pin above the PROGPU 2.15V shutdown threshold (V MSDT the charger. In this mode, the LTC1734L continues ...
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LTC1734L U U APPLICATIONS INFORMATION Programming Constant Current When in the constant current mode, the full-scale charge current is programmed using a single external resistor between the PROG pin and ground. This charge current will be 250 times the current ...
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U U APPLICATIONS INFORMATION Monitoring Charge Current The voltage on the PROG pin indicates the charge current as a proportion of the maximum current set by the program resistor. The charge current is equal to 250 • ...
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LTC1734L U U APPLICATIONS INFORMATION Table 1. PNP Pass Transistor Selection Guide Maximum P (W) D Mounted on Board Package Style A 0.2 SC-70 0.2 SC-70 0.5 SOT-23 0.625 SOT-23 1 SOT-89 1.1 SOT-23-6 1 ...
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... HORIZONTAL SCALE: 100 s/DIV Figure 5. Stability Waveforms 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. W ...
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... Charge Current for Li-Ion, NiCd, NiMH or Lead-Acid Batteries with Input Current Limit www.linear.com JA 2.90 BSC (NOTE 4) 1.50 – 1.75 (NOTE 4) PIN ONE ID 0.30 – 0.45 0.95 BSC 6 PLCS (NOTE 3) 0.80 – 0.90 0.01 – 0.10 1.90 BSC S6 TSOT-23 0302 LT/TP 0802 2K • PRINTED IN THE USA LINEAR TECHNOLOGY CORPORATION 2001 . See the 1734lf ...