Question about LT1512

Yes, the shutdown threshold at S/S is 1.3V, typical.  When the voltage at S/S is below the shutdown threshold, the part will be disabled.

If a cell is being charged, and it is removed, the voltage will rise to the maximum charging voltage set by the resistor divider to the FB pin.  Note, however that when the cell is removed, there may be overshoot from the control loop which may cause the voltage to reach a higher value, and with no load it is possible that the transient overvoltage will decay slowly.  You should be able to minimize this effect with proper control-loop compensation.

Hi,

One more question. LT1512 can work normally if a load is connected to its output always? A battery and the load are connected to its output. The load almost does not needs power. (less than 1mA)

Regards,

Kazu

Hi,

One more question. LT1512 can work normally if a load is connected to its output always? A battery and the load are connected to its output. The load almost does not needs power. (less than 1mA)

Regards,

Kazu

Yes, it is OK to leave a load connected to the output.  Obviously, this load will discharge the cell when the input power is removed.