MCP73213-A6AI/MF Microchip Technology, MCP73213-A6AI/MF Datasheet - Page 19

• Manufacturer Part Number: MCP73213-A6AI/MF
• Description: Li-Ion Battery Charge Management Controller; Package: 10L DFN 3x3mm; Temperature Range: 150C / 1hr w/l 24 hours
• Manufacturer: Microchip Technology

5.9
The MCP73213 shall limit the charge current based on
the die temperature. The thermal regulation optimizes
the charge cycle time while maintaining device
reliability.
the
“Electrical Characteristics” for thermal package
resistances
Considerations” for calculating power dissipation.
.
FIGURE 5-1:
5.10
The
temperature exceeds +150°C. Charging will resume
when the die temperature has cooled by approximately
10°C. The thermal shutdown is a secondary safety
feature in the event that there is a failure within the
thermal regulation circuitry.
5.11
The charge status outputs are open-drain outputs with
two different states: Low (L), and High Impedance
(Hi-Z). The charge status outputs can be used to
illuminate LEDs. Optionally, the charge status outputs
can be used as an interface to a host microcontroller.
Table 5-2
during a charge cycle.
© 2009 Microchip Technology Inc.
150
120
90
60
30
MCP73213
0
MCP73213
25
Thermal Regulation
Thermal Shutdown
Status Indicator
Figure 5-1
V
R
summarize the state of the status outputs
DD
PROG
40
= 9.1V
= 10 kΩ
and
55
Junction Temperature (°C)
device.
suspends
depicts the thermal regulation for
70
Thermal Regulation.
Section 6.1.1.2
85 100 115 130 145 160
Refer
charge
to
if
Section 1.0
“Thermal
the
die
TABLE 5-2:
5.12
Once a single-cell Li-Ion battery is detected, an internal
battery short protection (BSP) circuit starts monitoring
the battery voltage. When V
1.7V battery short protection threshold voltage, the
charging behavior is postponed. 25 mA (typical)
detection current is supplied for recovering from battery
short condition.
Preconditioning mode resumes when V
above battery short protection threshold. The battery
voltage must rise approximately 150 mV above the
battery short protection voltage before the MCP73213
device become operational.
Shutdown
Standby
Preconditioning
Constant Current Fast
Charge
Constant Voltage
Charge Complete - Standby
Temperature Fault
Timer Fault
Preconditioning Timer Fault
CHARGE CYCLE
Battery Short Protection
STATE
STATUS OUTPUTS
MCP73213
BAT
1.6 second 50% D.C.
1.6 second 50% D.C.
1.6 second 50% D.C.
Flashing (Type 2)
Flashing (Type 2)
Flashing (Type 2)
falls below a typical
Hi-Z (Type 1)
Hi-Z (Type 1)
Hi-Z (Type 1)
DS22190B-page 19
STAT
Hi-Z
Hi-Z
Hi-Z
L
L
L
BAT
raises