MCP73861_11 Datasheet, PDF (1/34 Pages) Microchip Technology – Advanced Single or Dual Cell, Fully Integrated Li-Ion/Li-Polymer Charge Management

MCP73861/2/3/4
Advanced Single or Dual Cell, Fully Integrated Li-Ion/Li-Polymer
Charge Management Controllers
Features
• Linear Charge Management Controllers
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse-Blocking Protection
• High-Accuracy Preset Voltage Regulation: + 0.5%
• Four Selectable Voltage Regulation Options:
- 4.1V, 4.2V – MCP73861/3
- 8.2V, 8.4V – MCP73862/4
• Programmable Charge Current: 1.2A Maximum
• Programmable Safety Charge Timers
• Preconditioning of Deeply Depleted Cells
• Automatic End-of-Charge Control
• Optional Continuous Cell Temperature Monitoring
• Charge Status Output for Direct LED Drive
• Fault Output for Direct LED Drive
• Automatic Power-Down
• Thermal Regulation
• Temperature Range: -40°C to +85°C
• Packaging: 16-Pin, 4 x 4 QFN
16-Pin SOIC
Applications
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants (PDAs)
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players
Package Types
16-Pin QFN
16 15 14 13
V_SET 1
12 V_BAT3
V_{DD2 2}
V_DD2 3
EP
11 V_BAT2
17
10 V_BAT1
V_SS1 4
9 ^VSS3
567 8
Description
The MCP7386X family of devices features highly
advanced linear charge management controllers for
use in space-limited, cost-sensitive applications. The
devices combine high-accuracy, constant voltage and
current regulation, cell preconditioning, cell tempera-
ture monitoring, advanced safety timers, automatic
charge termination, internal current sensing, reverse-
blocking protection, charge status and fault indication
in either a space-saving 16-pin 4 x 4 QFN package, or
a 16-pin SOIC package. The MCP7386X provides a
complete, fully functional, stand-alone charge manage-
ment solution with a minimum number of external
components.
The MCP73861/3 is intended for applications utilizing
single-cell Lithium-Ion or Lithium-Polymer battery
packs, while the MCP73862/4 is intended for dual
series cell Lithium-Ion or Lithium-Polymer battery
packs. The MCP73861/3 has two selectable
voltage-regulation options available (4.1V and 4.2V),
for use with either coke or graphite anodes and operate
with an input voltage range of 4.5V to 12V. The
MCP73862/4 has two selectable voltage-regulation
options available (8.2V and 8.4V), for use with coke or
graphite anodes, and operate with an input voltage
range of 8.7V to 12V.
The MCP73861/2 and MCP73863/4 differ only in the
function of the charge status output (STAT1) when a
charge cycle has been completed. The MCP73861/2
flashes the output, while the MCP73863/4 turns the
output off. Refer to Section 5.2.1 “Charge Status
Outputs (STAT1, STAT2)”.
The MCP7386X family of devices are fully specified
over the ambient temperature range of -40°C to +85°C.
16-Pin SOIC
STAT2 1
STAT1 2
V_SET 3
V_DD1 4
V_DD2 5
V_{SS1 6}
PROG 7
THREF 8
16 EN
15 VSS2
14 V_BAT3
13 V_BAT2
12 V_BAT1
11 V_SS3
10 TIMER
9 THERM
 2011 Microchip Technology Inc.
DS21893E-page 1