MCP73223T-C2SI/MF Microchip Technology, MCP73223T-C2SI/MF Datasheet - Page 19

• Manufacturer Part Number: MCP73223T-C2SI/MF
• Description: IC LI IRON PHOSPHATE CTRLR 10DFN
• Manufacturer: Microchip Technology

Specifications of MCP73223T-C2SI/MF

• Battery Type: Lithium Iron Phosphate (LiFePO4)
• Package / Case: 10-DFN
• Function: Charge Management
• Voltage - Supply: 4 V ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Product: Charge Management
• Output Voltage: 7.2 V
• Output Current: 130 mA to 1100 mA
• Operating Supply Voltage: 4.2 V to 13 V
• Supply Current: 700 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: No
• Uvlo Start Threshold: 4.15 V
• Uvlo Stop Threshold: 4.05 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP73X23EV-LFP - BOARD EVAL BATT CHARGER MCP73X23
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.9
The MCP73123/223 limits the charge current, based
on the die temperature. This thermal regulation
optimizes the charge cycle time while maintaining
device reliability.
regulation for the MCP73123/223 device. Refer to
Section 1.0 “Electrical Characteristics”
package resistances and
Considerations”
.
FIGURE 5-1:
5.10
The MCP73123/223 suspends charge if the die
temperature exceeds +150°C. Charging will be
resumed when the die temperature has cooled by
approximately 10°C. This thermal shutdown is a
secondary safety feature in the event that there is a
failure within the thermal regulation circuitry.
 2011 Microchip Technology Inc.
600
500
400
300
200
100
0
25 35 45 55 65 75 85 95 105 115 125 135 145
Thermal Regulation
Thermal Shutdown
V
R
DD
PROG
= 5.2V
= 2 kΩ
for calculating power dissipation.
Figure 5-1
Junction Temperature (°C)
Thermal Regulation.
Section 6.1.1.2 “Thermal
depicts the thermal
for thermal
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.
TABLE 5-2:
5.12
When a lithium iron phosphate battery is detected, an
internal battery short protection (BSP) circuit starts
monitoring the battery voltage. When V
a typical 1.7V battery short protection threshold voltage
per cell, the charging behavior is postponed.
25 mA (typical) detection current is supplied for
recovering from the battery short condition.
Preconditioning mode resumes when V
battery short protection threshold. The battery voltage
must rise approximately 150 mV above the battery
short protection voltage before the MCP73123/223
device becomes operational.
Shutdown
Standby
Preconditioning
Constant Current Fast
Charge
Constant Voltage
Charge Complete - Standby
Temperature Fault
Timer Fault
Preconditioning Timer Fault
CHARGE CYCLE
Status Indicator
Battery Short Protection
STATE
summarizes the state of the status outputs
MCP73123/223
STATUS OUTPUTS
1.6 second 50% DC
1.6 second 50% DC
1.6 second 50% DC
Flashing (Type 2)
Flashing (Type 2)
Flashing (Type 2)
Hi-Z (Type 1)
Hi-Z (Type 1)
Hi-Z (Type 1)
DS22191C-page 19
STAT
Hi-Z
Hi-Z
Hi-Z
BAT
BAT
L
L
L
rises above
falls below