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PDF LC05132C01MT Datasheet ( Hoja de datos )

Número de pieza LC05132C01MT
Descripción 1-Cell Lithium-Ion Battery Protection IC
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LC05132C01MT datasheet

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LC05132C01MT pdf
Recommended board layout
Board schematic
LC05132C01MT
Battery
R1
VCC
VCC
Controller IC
RSTB
C1
VSS
S1
S2
C3 C4
(option) (option)
Board size L=38.7mm W=4.4mm H=1.6mm glass-epoxy 4layers
All layers
38.7mm
CS
R2
PAC+
R3 RSTB
C2
(option)
C5
(option)
PAC-
4.4
mm
Top layer
2nd layer
3rd layer
Bottom layer
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LC05132C01MT arduino
LC05132C01MT
The recovery from discharging over-current detection mode will be made after the following two conditions are
satisfied.
1. Load is removed from IC.
2. CS pin voltage becomes less than or equal to discharging over-current release current (Iocr) over the delay time of
discharging over-current release (Tocr1) due to CS pin pulled down through Rcsd.
Consequently, internal power MOS FET as DCHG_SW will be turned on, and normal mode will be resumed.
(5)Discharging over-current detection mode 2 (short circuit detection)
Internal power MOS FET as DCHG_SW will be turned off and discharging current will be shut off if CS pin voltage
becomes greater than or equal to discharging over-current detection current2 (Ioc2) over the delay time of discharging
over-current 2 (Toc2).
This is the short circuit detection mode.
In short circuit detection mode, CS pin will be pulled down to Vss by internal resistor Rcsd.
The recovery from short circuit detection mode will be made after the following two conditions are satisfied.
a. Load is removed from IC.
b. CS pin voltage becomes less than or equal to discharging over-current release current (Iocr) over the delay time of
discharging over-current release (Tocr1) due to CS pin pulled down through Rcsd.
Consequently, internal power MOS FET as DCHG_SW will be turned on, and normal mode will be resumed.
(6)Charging over-current detection mode
Internal power MOS FET as CHG_SW will be turned off and charging current will be shut off if CS pin voltage
becomes less than or equal to charging over-current detection current (Ioch) over the delay time of charging
over-current (Toch).
This is the charging over-current detection mode.
The recoveries from charging over-current detection mode will be made after the following two conditions are
satisfied.
1. Charger is removed from IC and CS pin will increase by load connection.
2. CS pin voltage becomes greater than or equal to charging over-current release current (Iochr) over the delay time of
charging over-current release (Tocrh).
Consequently, internal power MOS FET as CHG_SW will be turned on, and normal mode will be resumed.
*Internal current flows out through CS and S2 terminals.
After charger is removed, it flows through parasitic diode of CHG_SW FET.
Therefore, CS pin voltage will go up more than charging over-current release current (Iochr).
So CS pin voltage is not an indispensable condition for recovery from charging over-current detection.
(7) 0V Battery Protection Function
This function protects the battery when a short circuit in the battery (0V battery) is detected, at which point charging
will be prohibited.
When the voltage of a battery is below 1.4V (max), the gate of the charging control FET is fixed to the
PAC-Terminal voltage, at which point charging will be prohibited.
If the voltage of the battery is greater than the 0V battery prohibit voltage (Vinh), charging will be enabled.
(8)Reset mode
In case of normal mode, internal power MOS FET as CHG_SW and DCHG_SW will be turned off and charging and
discharging current will be shut off if RSTB pin voltage becomes less than or equal to low-level input voltage (VIL)
over the delay time of reset pulse width(Tw_res).
This is the reset mode.
The recovery from reset mode will be made itself after the reset release time (Tres).
Consequently, internal power MOS FET as CHG_SW and DCHG_SW will be turned on, and normal mode will be
resumed.
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