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LTC4006EGN-6 Datasheet(PDF) 5 Page - Linear Technology |
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LTC4006EGN-6 Datasheet(HTML) 5 Page - Linear Technology |
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5 / 20 page  5 LTC4006 4006fa nected and the CHG pin is forced into a high impedance state. A pull-up resistor is required. The timer function is defeated by forcing this pin below 1V (or connecting it to GND). ACP/SHDN (Pin 3): Open-Drain Output used to indicate if the AC adapter voltage is adequate for charging. Active high digital output. Internal 10 µA pull-up to 3.5V. The charger can also be inhibited by pulling this pin below 1V. Reset the charger by pulsing the pin low for a minimum of 0.1 µs. TYPICAL PERFOR A CE CHARACTERISTICS Disconnect/Reconnect Battery (Load Dump) Battery Leakage Current vs Battery Voltage 4006 G04 LOAD CURRENT = 1A, 2A, 3A DCIN = 20V LTC4006-2 VFLOAT 1V/(DIV) LOAD STATE DISCONNECT RECONNECT 1A STEP 3A STEP 3A STEP 1A STEP BATTERY VOLTAGE (V) 0 5 10 15 20 25 30 4006 G05 40 35 30 25 20 15 10 5 0 VDCIN = 0V Efficiency at 19VDC VIN LTC4006-2 Efficiency with 15VDC VIN CHARGING CURRENT (A) 1.00 0.50 1.50 2.00 2.50 3.00 4006 G07 LTC4006-4 LTC4006-2 100 95 90 85 80 75 CHARGING CURRENT (A) 1.00 0.50 1.50 2.00 2.50 3.00 4006 G08 100 95 90 85 80 75 PI FU CTIO S DCIN (Pin 1): External DC Power Source Input. Bypass this pin with at least 0.01 µF. See Applications Information section. CHG (Pin 2): Open-Drain Charge Status Output. When the battery is being charged, the CHG pin is pulled low by an internal N-channel MOSFET. When the charge current drops below 10% of programmed current, the N-channel MOSFET turns off and a 25 µA current source is connected from the CHG pin to GND. When the timer runs out or the input supply is removed, the current source will be discon- |
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Similar Description - LTC4006EGN-6 |
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