lv5113t Sanyo Semiconductor Corporation, lv5113t Datasheet - Page 6

• Manufacturer Part Number: lv5113t
• Description: 2-cell Lithium-ion Secondary Battery Protection Ic
• Manufacturer: Sanyo Semiconductor Corporation

Over-charger detection/return
0V cell charge
Test time reduction function
Operation in case of detection overlap
(Note) Short-circuit detection can be made independently.
When, during over-
charge detection,
When, during over-
discharge detection,
When, during over-
current detection,
If the potential difference between V - pin and V SS pin becomes equal to or below the over-charger detection voltage
by connecting a charger, no charging can be made by turning “L” the Cout pin after certain delay time and turning off
the external Nch MOS FET. If this difference returns to equal to or more than the over-charger detection voltage
during detection delay time, the over-charger detection will be stopped. If the potential difference between V - pin and
V SS pin becomes equal to or more than the over-charger detection voltage after over-charger detection, the Cout
returns to “H” after certain time. The detection/return delay time is set internally.
If Dout pin is “L” charging will be made through the external Nch FET parasite diode of Dout pin. In that case, the
potential difference between V - pin and V SS pin becomes -Vf which is equal to or less than the over-charger
detection voltage, no over-charger detection will be made during over-discharge, over-current or short-circuit
detection. Further, if over-discharged battery is connected to over-charger, no over-charger detection is made while
the Dout pin is “L.”
If the battery voltage rises to the over-discharge detection voltage through the parasite diode and the Dout pin
becomes “H”, and the potential difference between V - pin and V SS pin is equal to or below the over-charger
detection voltage, the delay operation will be started after Dout pin becoming “H.”
If the cell voltage is 0V but a potential difference between V DD and V becomes equal to or greater than the 0V cell
charging lowest operation voltage, the Cout pin will output “H” and enable charging.
By turning T pin to the V DD potential, the delay times set by the counter can be cut. Normal time settings if T pin is
open. Delay time not set by the counter cannot be controlled by this pin.
Over-charger detection does not work during over-discharge, over-current or short-circuit detection and
the delay time starts after return from these states.
Overlap state
Over-discharge
detection is made,
Over-current
detection is made,
Over-charge detection
is made,
Over-current
detection is made,
Over-charge detection
is made,
Over-discharge
detection is made,
Over-charge detection is preferred. If over-
discharge state continues even after over-
charge detection, over-discharge detection is
resumed.
(*1) Both detections’ can be made in parallel.
Over-charge detection continues even when the
over-current state occurs. If the over-charge
state occurs first, over-current detection is
interrupted.
Over-discharge detection is interrupted and
over-charge detection is preferred. When over-
discharge state continues even after over-
charge detection, over-discharge detection is
resumed.
(*3) Both detections can be made in parallel.
Over-discharge detection continues even when
the over-current state is effectuated first. Over-
current detection is interrupted when the over-
discharge state is effectuated first,
(*1)
(*3)
Operation in case of
detection overlap
LV5113T
When over-charge detection is made first, V - is
released. When over-discharge is detected
after over-charge detection, the standby state is
not effectuated. Note that V - is connected to
V DD via 200kΩ.
(*2) When over-current is detected first, V - is
connected to V SS via 30kΩ. When over-charge
detection is made first, V - is released.
The standby state is not effectuated when over-
discharge detection is made after over-charge
detection. Note that V - is connected to V DD via
200kΩ.
(*4) If over-current is detected in advance, V will
be connected to V SS via 30kΩ. After detecting
over-discharge, V will be connected to V DD via
200kΩ to get into standby state. If over-
discharge is detected in advance, V will be
connected to V DD via 200kΩ to get into standby
state.
(*2)
(*4)
State after detection
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