MCP73833 Microchip Technology, Inc., MCP73833 Datasheet - Page 12

• Manufacturer Part Number: MCP73833
• Description: 1A output current linear charge management controller. Includes integrated pass transistor, integrated current sensing, and reverse discharge protection. Also includes safety features such as cell temperature monitoring, on-chip thermal regulation an
• Manufacturer: Microchip Technology, Inc.

MCP73833/4
4.7
The MCP73833/4 continuously monitors the voltage at
the V
voltage drops below the recharge threshold, another
charge cycle begins and current is once again supplied
to the battery or load. The recharge threshold is factory
set. Refer to Section 1.0 “Electrical Characteristics”
for recharge threshold options.
4.8
The MCP73833/4 limits the charge current based on
the die temperature. The thermal regulation optimizes
the charge cycle time while maintaining device reliabil-
ity.
MCP73833/4.
FIGURE 4-2:
DS22005A-page 12
Figure 4-2
BAT
1200
1000
800
600
400
200
Automatic Recharge
Thermal Regulation
0
pin in the charge complete mode. If the
depicts the thermal regulation for the
Junction Temperature (°C)
Thermal Regulation.
R
PROG
= 1 kΩ
4.9
The MCP73833/4 suspends charge if the die
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.
Thermal Shutdown
© 2006 Microchip Technology Inc.