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MCP73855T-I Datasheet(PDF) 1 Page - Microchip Technology

Part # MCP73855T-I
Description  USB Compatible Li-Ion/Li-Polymer Charge Management Controllers
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP73855T-I Datasheet(HTML) 1 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS21915A-page 1
MCP73853/55
Features
• Linear Charge Management Controllers
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse Blocking Protection
• High-Accuracy Preset Voltage Regulation: + 0.5%
• Two Selectable Voltage Regulation Options:
- 4.1V, 4.2V
• Programmable Charge Current
• USB Compatible Charge Current Settings
• Programmable Safety Charge Timers
• Preconditioning of Deeply Depleted Cells
• Automatic End-of-Charge Control
• Optional Continuous Cell Temperature
Monitoring:
- MCP73853
• Charge Status Output for Direct LED Drive
• Fault Output for Direct LED Drive
- MCP73853
• Automatic Power-Down
• Thermal Regulation
• Temperature Range: -40°C to +85°C
• Packaging:
- 16-Lead, 4x4 mm QFN (MCP73853)
- 10-Lead, 3x3 mm DFN (MCP73855)
Applications
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants (PDAs)
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
•Digital Cameras
• MP3 Players
• Bluetooth Headsets
• USB Chargers
Description
The MCP7385X devices are highly advanced linear
charge management controllers for use in space-
limited, cost-sensitive applications. The MCP73853
combines high-accuracy constant-voltage, constant-
current regulation, cell preconditioning, cell temperature
monitoring, advanced safety timers, automatic charge
termination, internal current sensing, reverse blocking
protection and charge status and fault indication in a
space-saving 16-lead, 4 x 4 QFN package.
The MCP73855 employs all the features of the
MCP73853, with the exception of the cell temperature
monitor and one status output. The MCP73855 is
offered in a space-saving 10-lead, 3 x 3 DFN package.
The
MCP73853
and
MCP73855
are
designed
specifically for USB applications, adhering to all the
specifications governing the USB power bus.
The MCP7385X devices provide two selectable voltage
regulation options (4.1V or 4.2V) for use with either
coke or graphite anodes.
The MCP7385X devices provide complete, fully-
functional, charge management solutions, operating
with an input voltage range of 4.5V to 5.5V.
The MCP7385X devices are fully specified over the
ambient temperature range of -40°C to +85°C.
Package Types
VDD1
VBAT1
1
2
3
4
MCP73853
14
15
16
VDD2
VSET
VSS3
VBAT3
VBAT2
5678
9
10
11
12
13
1
2
3
4
56
7
8
9
10
VSS1
16-Pin QFN
10-Pin DFN
EN
STAT1
VDD1
VSET
VSS1
PROG
VBAT1
VBAT2
VSS2
TIMER
MCP73855
USB Compatible Li-Ion/Li-Polymer
Charge Management Controllers


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