MCP73861T MICROCHIP [Microchip Technology], MCP73861T Datasheet

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MCP73861T

Manufacturer Part Number
MCP73861T
Description
Advanced Single or Dual Cell, Fully Integrated Li-Ion / Li-Polymer Charge Management Controllers
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.MCP73861T.pdf (34 pages)
Features
• Linear Charge Management Controllers
• High-Accuracy Preset Voltage Regulation: + 0.5%
• Four Selectable Voltage Regulation Options:
• 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 (PDAs)
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players
Package Types
© 2008 Microchip Technology Inc.
- Integrated Pass Transistor
- Integrated Current Sense
- Reverse-Blocking Protection
- 4.1V, 4.2V – MCP73861/3
- 8.2V, 8.4V – MCP73862/4
16-Pin QFN
Advanced Single or Dual Cell, Fully Integrated Li-Ion /
16-Pin SOIC
V
V
V
V
SET
DD2
DD2
SS1
Li-Polymer Charge Management Controllers
1
2
3
4
16
5
15 14 13
6
EP
17
7
8
12
11
10
9
V
V
V
V
BAT3
BAT2
BAT1
SS3
MCP73861/2/3/4
16-Pin SOIC
Description
The MCP7386X family of devices are 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 temperature
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 or 16-pin SOIC
package. The MCP7386X provides a complete, fully-
functional, stand-alone charge management 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 have 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
have
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 only difference between the MCP73861/2 and
MCP73863/4, respectively, is the function of the charge
status output (STAT1) when a charge cycle has been
completed. The MCP73861/2 flash the output, while
the MCP73863/4 turn 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.
two
selectable
THREF
STAT2
STAT1
PROG
V
V
V
V
SET
DD1
DD2
SS1
1
2
3
4
5
6
7
8
voltage-regulation
DS21893D-page 1
16
15
14
13
12
11
10
9
EN
V
V
V
V
V
TIMER
THERM
SS2
BAT3
BAT2
BAT1
SS3
options

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MCP73861T Summary of contents

Page 1

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 ...

Page 2

MCP73861/2/3/4 Typical Application 1.2A Lithium-Ion Battery Charger BAT3 4.7µ SET BAT 14 THREF EN 16 THERM STAT1 15 TIMER STAT2 5 PROG V SS MCP73861/3 Functional Block Diagram Direction Control V ...

Page 3

ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† V ..............................................................................13.5V DDN EN, STAT1, STAT2 w.r.t. V BATN SET SS .................................................................-0 PROG, THREF, THERM, TIMER w.r.t. V ..............-0 Maximum Junction Temperature, T ............ Internally ...

Page 4

MCP73861/2/3/4 DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits apply for -40°C to +85°C. Typical values are at +25° Parameters Sym Preconditioning Current Regulation (Trickle Charge Constant-Current Mode) Precondition Current I PREG Regulation ...

Page 5

DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits apply for -40°C to +85°C. Typical values are at +25° Parameters Sym Thermal Shutdown Die Temperature T SD Die Temperature T SDHYS Hysteresis AC CHARACTERISTICS ...

Page 6

MCP73861/2/3/4 NOTES: DS21893D-page 6 © 2008 Microchip Technology Inc. ...

Page 7

TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or ...

Page 8

MCP73861/2/3/4 Typical Performance Curves (Continued) NOTE: Unless otherwise indicated 0.45 MCP73861/3 0. SET 0. 0.30 0.25 0.20 0.15 0.10 0.05 0.00 2.0 2.4 2.8 3.2 3.6 Battery Regulation Voltage ...

Page 9

Typical Performance Curves (Continued) NOTE: Unless otherwise indicated 8.407 MCP73862 8.405 SET 9.4V DD 8.403 8.401 8.399 8.397 8.395 8.393 10 100 Charge Current (mA) FIGURE 2-13: Battery Regulation Voltage (V ) ...

Page 10

MCP73861/2/3/4 Typical Performance Curves (Continued) NOTE: Unless otherwise indicated 0.45 MCP73862/4 0. SET DD 0. 0.30 0.25 0.20 0.15 0.10 0.05 0.00 4.0 4.8 5.6 6.4 7.2 Battery Regulation Voltage ...

Page 11

Typical Performance Curves (Continued) NOTE: Unless otherwise indicated MCP73861 V Stepped from 5. OUT µF, X7R, Ceramic OUT FIGURE 2-25: Line Transient Response. MCP73861 V 5. ...

Page 12

MCP73861/2/3/4 Typical Performance Curves (Continued) NOTE: Unless otherwise indicated 1200 MCP73861/2/3 1000 SET DD 800 600 400 200 0 OPEN 4.8k 1.6k Programming Resistor (Ÿ) FIGURE 2-31: Charge Current (I Programming Resistor (R ). PROG ...

Page 13

PIN DESCRIPTION The descriptions of the pins are listed in TABLE 3-1: PIN FUNCTION TABLE MCP73861/2/3/4 Symbol QFN SOIC SET DD1 DD2 SS1 5 7 PROG 6 ...

Page 14

MCP73861/2/3/4 3.9 Battery Voltage Sense ( voltage sense input. Connect to positive BAT3 terminal of battery. A precision internal resistor divider regulates the final voltage on this pin to V 3.10 Logic Enable (EN ...

Page 15

DEVICE OVERVIEW The MCP7386X family of devices are highly advanced linear charge management controllers. Refer to the functional block diagram. Figure 4-2 operational flow algorithm from charge initiation to completion and automatic recharge. 4.1 Charge Qualification and Preconditioning Upon ...

Page 16

MCP73861/2/3/4 FIGURE 4-2: Operational Flow Algorithm. DS21893D-page 16 © 2008 Microchip Technology Inc. ...

Page 17

DETAILED DESCRIPTION 5.1 Analog Circuitry 5.1.1 BATTERY MANAGEMENT INPUT SUPPLY ( DD1 DD2 The V input is the input supply to the MCP7386X. DD The MCP7386X automatically enters a Power-down mode if the voltage on the ...

Page 18

MCP73861/2/3/4 5.1.6 BATTERY VOLTAGE SENSE (V The MCP7386X monitors the battery voltage at the V pin. This input is tied directly to the positive BAT3 terminal of the battery pack. 5.1.7 BATTERY CHARGE CONTROL OUTPUT ( BAT1 BAT2 ...

Page 19

APPLICATIONS The MCP7386X is designed to operate in conjunction with a host microcontroller or applications. The MCP7386X provides the preferred charge algorithm for Lithium-Ion and Lithium-Polymer cells Constant-current followed by Constant-voltage. . Unregulated Wall Cube FIGURE 6-1: Typical Application ...

Page 20

MCP73861/2/3/4 Preconditioning Mode Regulation Voltage (V ) REG Regulation Current (I ) REG Transition Threshold (V ) PTH Precondition Current (I ) PREG Termination Current (I ) TERM Precondition Safety Timer FIGURE 6-3: Typical Charge Profile in Thermal Regulation. 6.1 ...

Page 21

Power dissipation with a 5V, ±10% input voltage source is 575mA × PowerDissipation = 5.5V 2.7V – With the battery charger mounted oz. copper, the junction temperature rise is 60°C, approximately. This would ...

Page 22

MCP73861/2/3/4 NOTES: DS21893D-page 22 © 2008 Microchip Technology Inc. ...

Page 23

PACKAGING INFORMATION 7.1 Package Marking Information 16-Lead QFN XXXXX XXXXXX XXXXXX YWWNNN 16-Lead SOIC (150 mil) XXXXXXXXXXXXX XXXXXXXXXXXXX YYWWNNN Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar ...

Page 24

MCP73861/2/3/4 /HDG 3ODVWLF 4XDG )ODW 1R /HDG 3DFNDJH 0/ ± 1RWH TOP VIEW 1RWHV DS21893D-page 24 PP %RG\ >4)1@ BOTTOM VIEW © 2008 Microchip Technology Inc. ...

Page 25

Microchip Technology Inc. MCP73861/2/3/4 DS21893D-page 25 ...

Page 26

MCP73861/2/3/4 /HDG 3ODVWLF 6PDOO 2XWOLQH 6/ ± 1DUURZ 1RWH 1RWHV DS21893D-page 26 PP %RG\ >62,&@ α φ β © 2008 Microchip Technology Inc. ...

Page 27

Microchip Technology Inc. MCP73861/2/3/4 DS21893D-page 27 ...

Page 28

MCP73861/2/3/4 NOTES: DS21893D-page 28 © 2008 Microchip Technology Inc. ...

Page 29

APPENDIX A: REVISION HISTORY Revision D (December 2008) The following is the list of modifications: 1. Updated package outline diagrams. Revision C (August 2005) The following is the list of modifications: 1. Added MCP73863 and MCP73864 devices throughout data sheet. ...

Page 30

MCP73861/2/3/4 NOTES: DS21893D-page 30 © 2008 Microchip Technology Inc. ...

Page 31

... Package ML = Plastic Quad Flat No Lead, 4x4 mm Body (QFN), 16-lead SL = Plastic Small Outline, 150 mm Body (SOIC), 16-lead © 2008 Microchip Technology Inc. MCP73861/2/3/4 /XX Examples: Package a) MCP73861-I/ML: b) MCP73861T-I/ML: Tape and Reel, c) MCP73861-I/SL: d) MCP73861T-I/SL: a) MCP73862-I/ML: b) MCP73862T-I/ML: Tape and Reel, c) MCP73862-I/SL: d) MCP73862T-I/SL: (Industrial) a) MCP73863-I/ML: ...

Page 32

MCP73861/2/3/4 NOTES: DS21893D-page 32 © 2008 Microchip Technology Inc. ...

Page 33

Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

Page 34

W ORLDWIDE AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Harbour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://support.microchip.com Fax: 852-2401-3431 ...

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