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LTC4077 Datasheet(PDF) 11 Page - Linear Technology |
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LTC4077 Datasheet(HTML) 11 Page - Linear Technology |
11 / 16 page LTC4077 11 4077fa Status Indicators Thechargestatusoutput(CHRG)hastwostates:pull-down and high impedance. The pull-down state indicates that the LTC4077 is in a charge cycle. Once the charge cycle has terminated or the LTC4077 is disabled, the pin state becomes high impedance. The pull-down state is capable of sinking up to 10mA. The power supply status output (PWR) has two states: pull-down and high impedance. The pull-down state indicates that power is present at either DCIN or USBIN. If no power is applied at either pin, the PWR pin is high impedance, indicating that the LTC4077 lacks sufficient powertochargethebattery.Thepull-downstateiscapable of sinking up to 10mA. TRICKLE CHARGE MODE 1/10th FULL CURRENT CHRG STATE: PULLDOWN SHUTDOWN MODE IUSBIN DROPS TO 18 A CHRG STATE: Hi-Z CHARGE MODE FULL CURRENT CHRG STATE: PULLDOWN CHARGE MODE FULL CURRENT CHRG STATE: PULLDOWN STANDBY MODE NO CHARGE CURRENT CHRG STATE: Hi-Z SHUTDOWN MODE IDCIN DROPS TO 20 A CHRG STATE: Hi-Z BAT > 2.9V BAT < 2.9V BAT < 2.9V 2.9V < BAT 2.9V < BAT BAT > 2.9V BAT < 4.1V BAT < 4.1V IBAT < ITERMINATE IN VOLTAGE MODE IBAT < ITERMINATE IN VOLTAGE MODE POWER SELECTION STANDBY MODE NO CHARGE CURRENT CHRG STATE: Hi-Z TRICKLE CHARGE MODE 1/2 OR 1/10th FULL CURRENT CHRG STATE: PULLDOWN EN DRIVEN HIGH EN DRIVEN LOW EN DRIVEN HIGH DCIN POWER REMOVED DCIN POWER REMOVED USBIN POWER REMOVED OR DCIN POWER APPLIED USBIN POWER REMOVED OR DCIN POWER APPLIED DCIN POWER APPLIED ONLY USB POWER APPLIED STARTUP 4075 F01 EN DRIVEN LOW Figure 1. LTC4077 State Diagram of a Charge Cycle OPERATIO |
Similar Part No. - LTC4077_15 |
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Similar Description - LTC4077_15 |
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