MC33348 데이터 시트보기 (PDF) - Motorola => Freescale
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MC33348 Datasheet PDF : 12 Pages
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MC33348
PROTECTION CIRCUIT OPERATING MODE TABLE
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Input Conditions
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ CellStatus
Circuit Operation
Battery Pack Status
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ CELL CHARGING/DISCHARGING
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Storage or Nominal Operation: Both Charge MOSFET Q1 and Discharge MOSFET Q2 are on.
No current or voltage faults
The battery pack is available for charging or discharging.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ CELL CHARGING FAULT/RESET
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Charge Voltage Limit Fault:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VPin 1 ≥ Vth(OV) for 1.0 s
Charge MOSFET Q1 is latched off and the cell is disconnected
from the charging source. An internal current source pull–up is
applied to divider resistors R1 and R2 creating a hysteresis
voltage of VH. The battery pack is available for discharging.
Discharge current limit protection is disabled.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Charge Voltage Limit Reset:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VPin 1 < (Vth(OV) – VH)
ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ for 1.0 s
Charge MOSFET Q1 will turn on when the voltage across the cell
falls sufficiently to overcome hysteresis voltage VH. This can be
accomplished by applying a load to the battery pack. Discharge
current limit protection is enabled.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ CELL DISCHARGING FAULT/RESET
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Discharge Current Limit Fault:
VPin 5 ≥ (VPin 3 + Vth(dschg))
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ for 3.0 ms and
ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VPin 1 < (Vth(OV) – VH)
for 1.0 ms
Discharge MOSFET Q2 is latched off and the cell is
disconnected from the load. Q2 will remain in the off state as long
as VPin 5 exceeds VPin 3 by ≈ Vth(dschg). The battery pack is
available for charging.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Discharge Current Limit Reset:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VPin 5 – VPin 3 < Vth(dschg)
The Sense Enable circuit will reset and turn on discharge
MOSFET Q2 when VPin 3 no longer exceeds VPin 5 by
≈ Vth(dschg). This can be accomplished by either disconnecting
the load from the battery pack, or by connecting the battery pack
to the charger.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Discharge Voltage Limit Fault:
VPin 1 ≤ Vth(UV) for three
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ consecutive 1.0 s samples
Discharge MOSFET Q2 is latched off, the cells are disconnected
from the load, and the protection circuit enters a low current
sleepmode state. The battery pack is available for charging.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Discharge Voltage Limit Reset:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VPin 3 > (VPin 5 + 0.6 V)
The Sense Enable circuit will reset and turn on discharge
MOSFET Q2 when VPin 3 exceeds VPin 5 by 0.6 V. This can be
accomplished by connecting the battery pack to the charger.
ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ FAULTY CELL
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Discharge Voltage Limit Fault:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VPin 1 ≤ 1.5 V
This condition can happen if the cell is defective (<1.5 V). The
protection circuit logic will not function and the battery pack
cannot be charged.
Outputs
MOSFET Switches Function
Charge Discharge Charge
Q1
Q2
Pump
On
On
Active
On to Off
On
Active
Off to On
On
Active
On
On to Off Active
On
Off to On Active
On
On to Off Disabled
On
Off to On Active
Disabled Disabled Disabled
MOTOROLA ANALOG IC DEVICE DATA
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