MCP73833 Microchip Technology, Inc., MCP73833 Datasheet
MCP73833
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.
Datasheet
1.MCP73833.pdf
(26 pages)
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Features
• Complete Linear Charge Management Controller
• Constant Current / Constant Voltage Operation
• High Accuracy Preset Voltage Regulation:
• Programmable Charge Current: 1A Maximum
• Preconditioning of Deeply Depleted Cells
• Automatic End-of-Charge Control
• Automatic Recharge
• Two Charge Status Outputs
• Cell Temperature Monitor
• Low-Dropout Linear Regulator Mode
• Automatic Power-Down when Input Power
• Under Voltage Lockout
• Numerous Selectable Options Available for a
• Available Packages:
Applications
• Lithium-Ion / Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Digital Cameras
• MP3 Players
• Bluetooth Headsets
• USB Chargers
© 2006 Microchip Technology Inc.
- Integrated Pass Transistor
- Integrated Current Sense
- Integrated Reverse Discharge Protection
with Thermal Regulation
- 4.2V, 4.35V, 4.4V, or 4.5V, + 0.75%
- Selectable Current Ratio
- Selectable Voltage Threshold
- Selectable Current Threshold
- Selectable Safety Time Period
- Selectable Voltage Threshold
Removed
Variety of Applications:
- Refer to Section 1.0 “Electrical
- Refer to the ”Product Identification
- 3mm x 3mm DFN-10
- MSOP-10
Characteristics” for Selectable Options
System” for Standard Options
Stand-Alone Linear Li-Ion / Li-Polymer Charge
Management Controller
Description
The MCP73833/4 is a highly advanced linear charge
management controller for use in space-limited, cost
sensitive applications. The MCP73833/4 is available in
a 10-Lead, 3mm x 3mm DFN package or a 10-Lead,
MSOP package. Along with its small physical size, the
low number of external components required makes
the MCP73833/4 ideally suited for portable applica-
tions. For applications charging from a USB port, the
MCP73833/4 can adhere to all the specifications
governing the USB power bus.
The MCP73833/4 employs a constant current/constant
voltage charge algorithm with selectable precondition-
ing and charge termination. The constant voltage
regulation is fixed with four available options: 4.20V,
4.35V, 4.40V, or 4.50V, to accomodate new, emerging
battery charging requirements. The constant current
value
MCP73833/4 limits the charge current based on die
temperature during high power or high ambient condi-
tions. This thermal regulation optimizes the charge
cycle time while maintaining device reliability.
Several options are available for the preconditioning
threshold, preconditioning current value, charge
termination value, and automatic recharge threshold.
The preconditioning value and charge termination
value are set as a ratio, or percentage, of the
programmed constant current value. Preconditioning
can be set
Characteristics” for available options and the
“Product Indentification System” for standard
options.
The MCP73833/4 is fully specified over the ambient
temperature range of -40°C to +85°C.
Package Types
MCP73833/4
DFN-10
MSOP-10
is set
to 100%
STAT1
STAT2
V
V
V
with one
DD
DD
SS
STAT1
STAT2
. Refer to Section 1.0 “Electrical
V
V
V
DD
DD
SS
1
2
3
4
5
1
2
3
4
5
external
DS22005A-page 1
10
10
8
7
6
9
9
8
7
6
resistor. The
V
V
THERM
PG(TE)
PROG
BAT
BAT
V
V
THERM
PG(TE)
PROG
BAT
BAT
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