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MCP73855 Datasheet

  • MCP73855

  • USB Compatible Li-Ion/Li-Polymer Charge Management Controlle...

  • 364.00KB

  • 24页

  • MICROCHIP

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MCP73853/55
USB Compatible Li-Ion/Li-Polymer
Charge Management Controllers
Features
鈥?Linear Charge Management Controllers
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse Blocking Protection
鈥?High-Accuracy Preset Voltage Regulation: + 0.5%
鈥?Two Selectable Voltage Regulation Options:
- 4.1V, 4.2V
鈥?Programmable Charge Current
鈥?USB Compatible Charge Current Settings
鈥?Programmable Safety Charge Timers
鈥?Preconditioning of Deeply Depleted Cells
鈥?Automatic End-of-Charge Control
鈥?Optional Continuous Cell Temperature
Monitoring:
- MCP73853
鈥?Charge Status Output for Direct LED Drive
鈥?Fault Output for Direct LED Drive
- MCP73853
鈥?Automatic Power-Down
鈥?Thermal Regulation
鈥?Temperature Range: -40掳C to +85掳C
鈥?Packaging:
- 16-Lead, 4x4 mm QFN
(MCP73853)
- 10-Lead, 3x3 mm DFN
(MCP73855)
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掳C to +85掳C.
Package Types
STAT1
EN
14
V
SS2
13
12 V
BAT3
11 V
BAT2
MCP73853
V
DD2
3
V
SS1
4
5
PROG
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
16-Pin QFN
16
V
SET
1
V
DD1
2
15
STAT2
10 V
BAT1
9 V
SS3
6
THREF
7
THERM
8
TIMER
10 EN
9 V
BAT2
8 V
BAT1
7 V
SS2
6 TIMER
10-Pin DFN
STAT1 1
V
SET
2
V
DD1
3
MCP73855
V
SS1
4
PROG 5
铮?/div>
2004 Microchip Technology Inc.
DS21915A-page 1

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