LTC4002ES8-8.4 Linear Technology, LTC4002ES8-8.4 Datasheet

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... APPLICATIO S ■ Portable Computers ■ Charging Docks ■ Handheld Instruments U TYPICAL APPLICATIO 1.5A Single Cell Li-Ion Battery Charger 0.1µ BAT 2k LTC4002ES8-4.2 CHARGE STATUS CHRG COMP NTC 0.47µF 2.2k 10k T NTC Switch Mode Battery Charger DESCRIPTIO ® The LTC 4002 is a complete battery charger controller for one (4 ...

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... Rising CC COMP Pin Falling V – BAT V = 1.2V COMP CHRG I = 1mA CHRG V /V SNS(EOC) SNS(CHG) ORDER PART TOP VIEW NUMBER 8 NTC LTC4002ES8-4.2 SENSE 7 LTC4002ES8-8.4 6 BAT 5 CHRG S8 PART MARKING S8 PACKAGE 400242 = 110°C/W JA 400284 MIN TYP MAX ● 4 4.168 4.2 4.232 ● 4.158 4.242 ● ...

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ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifications are at T SYMBOL PARAMETER I NTC Pin Output Current NTC V NTC Pin Threshold Voltage (Hot) NTC-HOT V NTC Pin Threshold Voltage (Cold) NTC-COLD Recharge Battery Voltage Offset from Full ∆V RECHRG ...

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LTC4002 ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifications are at T SYMBOL PARAMETER V NTC Pin Threshold Voltage (Hot) NTC-HOT V NTC Pin Threshold Voltage (Cold) NTC-COLD Recharge Battery Voltage Offset from Full ∆V RECHRG Charged Battery Voltage I CHRG ...

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W U TYPICAL PERFOR A CE CHARACTERISTICS Oscillator Frequency 510 500 490 (V) CC 4002 G04 CHRG Pin Output Low Voltage vs Temperature 180 I = 1mA LOAD 140 100 – ...

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LTC4002 W U TYPICAL PERFOR A CE CHARACTERISTICS Current Mode Sense Voltage vs Temperature 104 100 96 – 50 – 100 125 TEMPERATURE (°C) 4002 G13 COMP Pin Output Current 102 V ...

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W U TYPICAL PERFOR A CE CHARACTERISTICS Trickle Charge Voltage 5.2 LTC4002-8 BAT 5.0 4 (V) CC 4002 G22 Trickle Charge Sense Voltage vs Temperature 10 ...

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LTC4002 W U TYPICAL PERFOR A CE CHARACTERISTICS End-of-Charge Ratio vs Temperature 14 LTC4002-8 – 50 – TEMPERATURE (° CTIO S (DFN/SO-8) COMP (Pin ...

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CTIO S (DFN/SO-8) hot temperature or rises above 2.465V at cold temperature, charging is suspended and the internal timer stops. The CHRG pin output is not affected during this hold state BLOCK DIAGRA ...

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LTC4002 TEST CIRCUITS Test Circuit 1 15V – 1.5V LT1006 + 0V – 100µA COMP CA + – LTC4002 U OPERATIO The LTC4002 is a constant current, constant voltage Li-Ion battery charger controller that uses a current mode ...

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U OPERATIO mode, dropping I to 10µA. This will greatly reduce the CC current drain on the battery and increase the standby time. A 10kΩ NTC (negative temperature coefficient) thermistor can be connected from the NTC pin to ground for ...

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LTC4002 U U APPLICATIO S I FOR ATIO impedance state, the current source will pull the pin low through the 390k resistor. When the internal timer has expired, the CHRG pin changes to a high impedance state and the 390k ...

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U U APPLICATIO S I FOR ATIO Input and Output Capacitors Since the input capacitor is assumed to absorb all input switching ripple current in the converter, it must have an adequate ripple current rating. Worst-case RMS ripple cur- rent ...

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... The ground pin also works as a heat sink, therefore use a generous amount of copper around the ground pin. This is especially important for high V and/or high gate capacitance applications 22V 0.1µF CC BAT 3 CER GATE R1 2k LTC4002ES8-4 CHRG SENSE 1 6 COMP BAT C C NTC GND 0.47µ ...

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... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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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... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 2-Cell 8.4V, 2A Li-Ion Battery Charger R1 100k M2 1/2 Si9933ADY 0.1µ CER GATE 1/2 Si9933ADY LTC4002ES8-8.4 L1 6.8µ CHRG SENSE R SENSE 50mΩ COMP BAT C2 NTC GND C C 22µF 0.47µF ...