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PDF MCP73862 Data sheet ( Hoja de datos )
| Número de pieza | MCP73862 | |
| Descripción | Advanced Single or Dual Cell / Fully Integrated Li-Ion / Li-Polymer Charge Management Controllers | |
| Fabricantes | Microchip Technology | |
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MCP73861/2
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
- 8.2V, 8.4V - MCP73862
• 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
Applications
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Hand Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players
Description
The MCP7386X family of devices are highly advanced
linear charge management controllers for use in space-
limited, cost-sensitive applications. The MCP73861 and
MCP73862 combine high-accuracy constant voltage,
constant current regulation, cell preconditioning, cell
temperature monitoring, advanced safety timers, auto-
matic charge termination, internal current sensing,
reverse-blocking protection, and charge status and fault
indication in a space-saving 16-pin, 4 x 4 QFN package.
The MCP7386X provides a complete, fully-functional,
stand-alone charge management solution with a
minimum number of external components.
The MCP73861 is targeted for applicatioins utilizing
single-cell Lithium-Ion or Lithium-Polymer battery
packs, while the MCP73862 is targeted for dual series
cell Lithium-Ion or Lithium-Polymer battery packs. The
MCP73861 has two selectable voltage-regulation
options available (4.1V and 4.2V), for use with either
coke or graphite anodes, and operates with an input
voltage range of 4.5V to 12V. The MCP73862 has two
selectable voltage-regulation options available (8.2V
and 8.4V), for use with coke or graphite anodes, and
operates with an input voltage range of 8.7V to 12V.
The MCP7386X family of devices are fully specified
over the ambient temperature range of -40°C to +85°C.
Package Type
STAT1 STAT2 EN VSS2
16 15 14 13
VSET 1
12 VBAT3
VDD1 2
VDD2 3
MCP73861
MCP73862
11 VBAT2
10 VBAT1
VSS1
4 9 VSS3
5678
PROG THREF THERM TIMER
2004 Microchip Technology Inc.
DS21893A-page 1
1 page  
MCP73861/2
DC CHARACTERISTICS (Continued)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typ) + 0.3V] to 12V,
TA = -40°C to 85°C. Typical values are at +25°C, VDD = [VREG (typ.) + 1.0V]
Parameters
Sym
Min Typ Max Units
Conditions
Thermal Shutdown
Die Temperature
Die Temperature Hysteresis
TSD
TSDHYS
— 155 — °C
— 10 — °C
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (typ.) + 0.3V] to 12V,
TA = -40°C to 85°C. Typical values are at +25°C, VDD = [VREG (typ.) + 1.0V]
Parameters
Sym
Min Typ Max Units
Conditions
UVLO Start Delay
Current Regulation
tSTART
Transition Time Out of
Preconditioning
tDELAY
Current Rise Time Out of
Preconditioning
tRISE
Fast Charge Safety Timer
Period
tFAST
Preconditioning Current Regulation
Preconditioning Charge
Safety Timer Period
tPRECON
Charge Termination
Elapsed Time Termination
Period
tTERM
Status Indicators
Status Output turn-off
Status Output turn-on
tOFF
tON
— — 5 ms VDD Low to High
— — 1 ms VBAT < VPTH to VBAT > VPTH
— — 1 ms IOUT Rising to 90% of IREG
1.1 1.5 1.9 Hours CTIMER = 0.1 µF
45 60 75 Minutes CTIMER = 0.1 µF
2.2 3 3.8 Hours CTIMER = 0.1 µF
— — 200 µs ISINK = 1 mA to 0 mA
— — 200 µs ISINK = 0 mA to 1 mA
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (typ.) + 0.3V] to 12V.
Typical values are at +25°C, VDD = [VREG (typ.) + 1.0V]
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
TA -40 — +85 °C
TJ -40 — +125 °C
TA -65 — +150 °C
Thermal Resistance, 16-L, 4mm x 4mm QFN
θJA
—
37
—
°C/W
4-Layer JC51-7 Standard
Board, Natural Convection
2004 Microchip Technology Inc.
DS21893A-page 5
5 Page 
MCP73861/2
NOTE: Unless otherwise indicated, VDD = [VREG(Typ) + 1V], IOUT = 10 mA and TA= +25°C, Constant Voltage mode.
1200
1000
MCP73861/2
VSET = VDD
800
600
400
200
0
OPEN
4.8K
1.6K
RPROG (Ω)
536
0
FIGURE 2-31:
Charge Current (IOUT) vs.
Programming Resistor (RPROG).
505
503
501
MCP73861/2
VSET = VDD
RPROG = 1.6 kΩ
499
497
495
493
TA (°C)
FIGURE 2-32:
Charge Current (IOUT) vs.
Ambient Temperature (TA).
2004 Microchip Technology Inc.
DS21893A-page 11
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet MCP73862.PDF ] | |
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