LTC4002EDD LINER [Linear Technology], LTC4002EDD Datasheet
LTC4002EDD
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LTC4002EDD Summary of contents
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FEATURES ■ Wide Input Supply Range: 4.7V to 22V – 4.2 Version 8.9V to 22V – 8.4 Version ■ High Efficiency Current Mode PWM Controller with 500kHz Switching Frequency ■ ±1% Charge Voltage Accuracy ■ End-of-Charge Current Detection Output ■ ...
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... CC CC Lead Temperature (S8 Package) (Soldering, 10 sec) ........................................... 300° ORDER PART NUMBER COMP 1 LTC4002EDD-4 LTC4002EDD-8.4 GATE 3 GND 4 DD PART MARKING LAGG 8-LEAD PLASTIC 125°C, θ JMAX LBGY (LTC4002-4.2) The ● denotes the specifications which apply over the full = 25° ...
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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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LTC4002 U U APPLICATIO S I FOR ATIO Next, choose the P-channel MOSFET. The Si6435ADQ in a TSSOP-8 package with R = 42mΩ (nom), 55mΩ DS(ON) (max) offers a small solution. The maximum power dissi- pation with ...
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PACKAGE DESCRIPTIO 3.50 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS .050 BSC .245 MIN .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 ...
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LTC4002 U TYPICAL APPLICATIO RELATED PARTS PART NUMBER DESCRIPTION LTC1732-8.4 2-Cell Li-Ion Linear Battery Charger LTC1733 Li-Ion Battery Charger with Termal Regulation LTC1734/LTC1734L SOT-23 Li-Ion Battery Chargers LTC1980 Combination Battery Charger and DC/DC Converter LTC4006/LTC4007 4A Multiple Cell Li-Ion, NiCd, ...