MCP73843-420IUN [MICROCHIP]
1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10, PLASTIC, MO-187, MSOP-10;型号: | MCP73843-420IUN |
厂家: | MICROCHIP |
描述: | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10, PLASTIC, MO-187, MSOP-10 控制器 |
文件: | 总24页 (文件大小:407K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
MCP73841/2/3/4
M
Advanced Single or Dual Cell Lithium-Ion/
Lithium-Polymer Charge Management Controllers
Features
Description
• Linear Charge Management Controllers
• High-Accuracy Preset Voltage Regulation:
- + 0.5% (max)
• Four Preset Voltage Regulation Options:
- 4.1V - MCP73841-4.1, MCP73843-4.1
- 4.2V - MCP73841-4.2, MCP73843-4.2
- 8.2V - MCP73842-8.2, MCP73844-8.2
- 8.4V - MCP73842-8.4, MCP73844-8.4
• Programmable Charge Current
• Programmable Safety Charge Timers
• Preconditioning of Deeply Depleted Cells
• Automatic End-of-Charge Control
• Optional Continuous Cell Temperature
Monitoring (MCP73841 and MCP73842)
The MCP7384X family of devices are highly advanced
linear charge management controllers for use in
space-limited, cost-sensitive applications. The
MCP73841 and MCP73842 combine high accuracy,
constant-voltage, constant-current regulation, cell pre-
conditioning, cell temperature monitoring, advanced
safety timers, automatic charge termination and
charge status indication in space-saving, 10-pin
MSOP packages. The MCP73841 and MCP73842
provide complete, fully-functional, stand-alone charge
management solutions.
The MCP73843 and MCP73844 employ all the
features of the MCP73841 and MCP73842, with the
exception of the cell temperature monitor. The
MCP73843 and MCP73844 are offered in 8-pin MSOP
packages.
The MCP73841 and MCP73843 are designed for
applications utilizing single-cell Lithium-Ion or Lithium-
Polymer battery packs. Two preset voltage regulation
options are available (4.1V and 4.2V) for use with either
coke or graphite anodes. The MCP73841 and
MCP73843 operate with an input voltage range of 4.5V
to 12V.
• Charge Status Output for Direct LED Drive
• Automatic Power-Down when Input Power
Removed
• Temperature Range: -40°C to 85°C
• Packaging: MSOP-10 - MCP73841, MCP73842
MSOP-8 - MCP73843, MCP73844
The MCP73842 and MCP73844 are designed for
applications utilizing dual series cell Lithium-Ion or
Lithium-Polymer battery packs. Two preset voltage
regulation options are available (8.2V and 8.4V). The
MCP73842 and MCP73844 operate with an input
voltage range of 8.7V to 12V.
Applications
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
• Digital Cameras
The MCP7384X family of devices are fully specified
over the ambient temperature range of -40°C to +85°C.
• MP3 Players
Package Types
10-Pin MSOP
Typical Application Circuit
SENSE
VDD
STAT1
EN
DRV
VBAT
VSS
TIMER
THERM
1
2
3
4
5
10
9
8
7
6
1A Lithium-Ion Battery Charger
MA2Q705
NDS8434
100 mΩ
5V
Single
Lithium-Ion
Cell
+
-
THREF
10 µF
1
8
SENSE DRV
8-Pin MSOP
2
3
4
7
6
5
VDD
VBAT
VSS
1
SENSE
VDD
STAT1
EN
8
7
6
5
DRV
VBAT
VSS
10 µF
STAT1
2
3
4
EN TIMER
0.1 µF
100 kΩ
TIMER
MCP73843
2004 Microchip Technology Inc.
DS21823B-page 1
MCP73841/2/3/4
Functional Block Diagram
VDD
VREF
VDD
1 kΩ
–
+
DRV
Charge Current
SENSE
Control Amplifier
90 kΩ
Charge
Current
Amplifier
+
Voltage Control
Amplifier
–
+
-
12 kΩ
10 kΩ
VREF
Charge
VREF
VBAT
Termination
Comparator
90 kΩ
10 kΩ
300 kΩ
+
-
Charge_ok
Precon
Precondition
IREG/10
Precondition
Control
(825 kΩ)
Comp.
+
-
UVLO
Comparator
+
-
74.21 kΩ
Constant-Voltage/
Recharge Comp.
VUVLO
+
-
0.79 kΩ
EN
Power-On
Delay
VREF
150.02 kΩ
VUVLO
Bias and
VREF (1.2V)
Reference
Generator
5.15 kΩ
(4.29 kΩ)
THREF
THERM
VSS
100 kΩ
Temperature
Comparators
STAT1
+
-
Drv Stat 1
Charge_ok
Charge Control,
50 kΩ
50 kΩ
Charge Timers,
And
IREG/10
+
-
Status Logic
Oscillator
MCP73841 and MCP73842 Only
TIMER
DS21823B-page 2
2004 Microchip Technology Inc.
MCP73841/2/3/4
*Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD.................................................................................13.5V
All inputs and outputs w.r.t. VSS ................ -0.3 to (VDD+0.3)V
Current at DRV Pin ......................................................±4 mA
Current at STAT1 Pin .................................................±30 mA
Maximum Junction Temperature, TJ .............................150°C
Storage temperature .....................................-65°C to +150°C
ESD protection on all pins:
Human Body Model (1.5 kΩ in Series with 100 pF).......≥ 2 kV
Machine Model (200 pF, No Series Resistance).............200V
DC 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) + 1V].
Parameters
Supply Input
Supply Voltage
MCP73841, MCP73843
MCP73842, MCP73844
Supply Current
Sym
Min
Typ
Max
Units
Conditions
VDD
4.5
8.7
–
–
–
–
0.25
0.75
12
12
4
4
V
V
µA
mA
ISS
Disabled
Operating
V
DD =VREG(Typ)+1V
UVLO Start Threshold
MCP73841, MCP73843
MCP73842, MCP73844
UVLO Stop Threshold
MCP73841, MCP73843
MCP73842, MCP73844
VSTART
4.25
8.45
4.45
8.65
4.60
8.90
V
V
VDD Low-to-High
VDD Low-to-High
VSTOP
4.20
8.40
4.40
8.60
4.55
8.85
V
V
VDD High-to-Low
VDD High-to-Low
Voltage Regulation (Constant-Voltage Mode)
Regulated Output Voltage
VREG
MCP73841-4.1,
MCP73843-4.1
MCP73841-4.2,
MCP73843-4.2
MCP73842-8.2,
MCP73844-8.2
MCP73842-8.4,
MCP73844-8.4
4.079
4.179
8.159
8.358
–
4.1
4.2
4.121
4.221
8.241
8.442
0.25
V
V
VDD = [VREG(Typ)+1V], IOUT = 10 mA,
TA = -5°C to +55°C
VDD = [VREG(Typ)+1V], IOUT = 10 mA,
TA = -5°C to +55°C
VDD = [VREG(Typ)+1V], IOUT = 10 mA,
TA = -5°C to +55°C
VDD = [VREG(Typ)+1V], IOUT = 10 mA,
TA = -5°C to +55°C
8.2
V
8.4
V
Line Regulation
|(∆VBAT
/
0.025
0.01
%/V
%
VDD = [VREG(Typ)+1V] to 12V,
IOUT = 10 mA
V
BAT)|/∆VDD
Load Regulation
|∆VBAT|/VBAT
–
0.25
IOUT = 10 mA to 150 mA,
DD = [VREG(Typ)+1V]
V
Supply Ripple Attenuation
PSRR
–
–
–
–
-58
-42
-30
0.4
–
–
–
1
dB
dB
dB
µA
IOUT = 10 mA, 100 Hz
IOUT = 10 mA, 1 kHz
IOUT = 10 mA, 10 kHz
Output Reverse Leakage
Current
IDISCHARGE
VDD Floating, VBAT = VREG(Typ)
Current Regulation (Fast Charge Constant-Current Mode)
Fast Charge Current
Regulation Threshold
VFCS
100
110
120
mV
VDD – VSENSE,
TA = -5°C to +55°C
2004 Microchip Technology Inc.
DS21823B-page 3
MCP73841/2/3/4
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) + 1V].
Parameters
Sym
Min
Typ
Max
Units
Conditions
Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)
Precondition Current
Regulation Threshold
Precondition Threshold Voltage
VPCS
VPTH
5
10
15
mV
VDD – VSENSE,
TA = -5°C to +55°C
MCP73841-4.1,
MCP73843-4.1
MCP73841-4.2,
MCP73843-4.2
MCP73842-8.2,
MCP73844-8.2
MCP73842-8.4,
MCP73844-8.4
2.70
2.75
5.40
5.50
2.80
2.85
5.60
5.70
2.90
2.95
5.80
5.90
V
V
V
V
VBAT Low-to-High
VBAT Low-to-High
VBAT Low-to-High
VBAT Low-to-High
Charge Termination
Charge Termination Threshold
VTCS
4
7
10
mV
VDD – VSENSE,
TA = -5°C to +55°C
Automatic Recharge
Recharge Threshold Voltage
VRTH
MCP73841,
MCP73843
MCP73842,
MCP73844
VREG
-
VREG
-
VREG
-
V
V
VBAT High-to-Low
VBAT High-to-Low
300 mV 200 mV 100 mV
VREG
-
VREG
-
VREG-
600 mV 400 mV 200 mV
External MOSFET Gate Drive
Gate Drive Current
IDRV
–
–
–
2
-0.5
–
–
–
1.0
-4.5
mA
mA
V
Sink, CV Mode
Source, CV Mode
VDD = 4.5V
Gate Drive Minimum Voltage
Gate - Source Clamp Voltage
VDRVMIN
VGS
-7.0
–
V
VDD = 12.0V
Thermistor Reference - MCP73841, MCP73842
Thermistor Reference Output
Voltage
VTHREF
2.475
2.55
2.625
V
TA = +25°C, VDD = VREG(Typ)+1V,
I
THREF = 0 mA
Temperature Coefficient
Thermistor Reference Source
Current
TCTHREF
ITHREF
–
200
+50
–
–
–
ppm/°C
µA
Thermistor Reference Line
Regulation
|(∆VTHREF
/
–
–
0.1
0.25
0.10
%/V
%
VDD=[VREG(Typ)+1V] to 12V
ITHREF = 0 mA to 0.20 mA
V
THREF)|/
∆VDD
Thermistor Reference Load
Regulation
∆VTHREF
VTHREF
/
0.01
Thermistor Comparator - MCP73841, MCP73842
Upper Trip Threshold
Upper Trip Point Hysteresis
Lower Trip Threshold
Lower Trip Point Hysteresis
Input Bias Current
VT1
VT1HYS
VT2
1.18
–
0.59
–
1.25
-50
0.62
80
1.32
–
0.66
–
V
mV
V
mV
µA
VT2HYS
|IBIAS
|
–
–
2
Status Indicator
Sink Current
Low Output Voltage
Input Leakage Current
ISINK
VOL
ILK
4
–
–
7
200
0.01
12
400
1
mA
mV
µA
ISINK = 1 mA
ISINK = 0 mA, VSTAT1 = 12V
DS21823B-page 4
2004 Microchip Technology Inc.
MCP73841/2/3/4
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) + 1V].
Parameters
Enable Input
Sym
Min
Typ
Max
Units
Conditions
Input High-Voltage Level
Input Low-Voltage Level
Input Leakage Current
VIH
VIL
ILK
1.4
–
–
-
-
–
0.8
1
V
V
µA
0.01
VENABLE = 12V
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typ)+0.3V] to 12V, TA = -40°C to +85°C. Typ-
ical values are at +25°C, VDD= [VREG(Typ)+1V].
Parameters
UVLO Start Delay
Sym
Min
Typ
Max
Units
Conditions
VDD Low-to-High
tSTART
–
–
5
msec
Current Regulation
Transition Time Out of
tDELAY
tRISE
–
–
–
–
1
1
msec
msec
VBAT< VPTH to VBAT > VPTH
IOUT Rising to 90% of IREG
Preconditioning
Current Rise Time Out of
Preconditioning
Fast Charge Safety Timer Period
Preconditioning Current Regulation
Preconditioning Charge Safety
Timer Period
tFAST
1.2
1.4
1.6
Hours CTIMER = 0.1 µF
Minutes CTIMER = 0.1 µF
tPRECON
50
60
70
Charge Termination
Elapsed Time Termination Period
Status Indicators
tTERM
2.5
2.9
3.3
Hours CTIMER = 0.1 µF
Status Output turn-off
Status Output turn-on
tOFF
tON
–
–
–
–
200
200
µsec
µsec
ISINK = 10 mA to 0 mA
ISINK = 0 mA to 10 mA
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typ)+0.3V] to 12V.
Typical values are at +25°C, VDD= [VREG(Typ)+1.0V].
Parameters
Temperature Ranges
Sym
Min
Typ
Max
Units
Conditions
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, MSOP-10
TA
TA
TA
-40
-40
-65
+85
+125
+150
°C
°C
°C
θJA
θJA
113
206
°C/W
°C/W
4-Layer JC51-7 Standard Board,
Natural Convection
Single-Layer SEMI G42-88 Board,
Natural Convection
Thermal Resistance, MSOP-8
2004 Microchip Technology Inc.
DS21823B-page 5
MCP73841/2/3/4
2.0
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 guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise indicated, V = [V
(Typ) + 1V], I
= 10 mA and T = +25°C.
DD
REG
OUT
A
4.203
1.40
MCP73841-4.2V
VDD = 5.2 V
MCP73841-4.2V
VDD = 5.2 V
4.202
4.201
4.200
4.199
4.198
4.197
4.196
1.20
1.00
0.80
0.60
0.40
0.20
0.00
+55°C
+25°C
+85°C
+25°C
-45°C
-5°C
10
100
IOUT (mA)
1000
10
100
IOUT (mA)
1000
FIGURE 2-1:
Battery Regulation Voltage
FIGURE 2-4:
Supply Current (I ) vs.
SS
(V
) vs. Charge Current (I
).
Charge Current (I
OUT
).
BAT
OUT
4.203
1.40
+85°C
MCP73841-4.2V
IOUT = 1000 mA
MCP73841-4.2V
OUT = 1000 mA
4.202
4.201
4.200
4.199
4.198
4.197
4.196
1.20
1.00
0.80
0.60
0.40
0.20
0.00
I
+55°C
+25°C
+25°C
-45°C
-5°C
4.5
6.0
7.5
9.0
10.5
12.0
4.5
6.0
7.5
9.0
10.5
12.0
VDD (V)
VDD (V)
FIGURE 2-2:
Battery Regulation Voltage
FIGURE 2-5:
Supply Current (I ) vs.
SS
DD
(V
) vs. Supply Voltage (V ).
Supply Voltage (V ).
BAT
DD
4.203
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
MCP73841-4.2V
IOUT = 10 mA
MCP73841-4.2V
4.202
4.201
4.200
4.199
4.198
4.197
4.196
IOUT = 10 mA
+55°C
+25°C
-45°C
+25°C
+85°C
-5°C
4.5
6.0
7.5
9.0
10.5
12.0
4.5
6.0
7.5
9.0
10.5
12.0
VDD (V)
VDD (V)
FIGURE 2-3:
Battery Regulation Voltage
FIGURE 2-6:
Supply Current (I ) vs.
SS
DD
(V ) vs. Supply Voltage (V ).
Supply Voltage (V ).
BAT
DD
DS21823B-page 6
2004 Microchip Technology Inc.
MCP73841/2/3/4
Note: Unless otherwise indicated, V = [V
(Typ) + 1V], I
= 10 mA and T = +25°C.
DD
REG
OUT A
8.408
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
MCP73842-8.4V
VDD = 9.4 V
MCP73842-8.4V
VDD = 9.4 V
8.406
8.404
8.402
8.400
8.398
8.396
8.394
8.392
8.390
+85°C
+25°C
+55°C
+25°C
-45°C
-5°C
10
100
1000
10
100
1000
IOUT (mA)
IOUT (mA)
FIGURE 2-7:
Battery Regulation Voltage
FIGURE 2-10:
Supply Current (I ) vs.
SS
OUT
(V
) vs. Charge Current (I
).
Charge Current (I
).
BAT
OUT
8.408
1.40
1.20
MCP73842-8.4V
IOUT = 1000 mA
MCP73842-8.4V
OUT = 1000 mA
8.406
8.404
8.402
8.400
8.398
8.396
8.394
8.392
8.390
I
+85°C
+25°C
+55°C
+25°C
1.00
0.80
0.60
0.40
0.20
0.00
-45°C
-5°C
8.8 9.2 9.6 10 10.4 10.8 11.2 11.6 12
VDD (V)
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
VDD (V)
FIGURE 2-8:
Battery Regulation Voltage
FIGURE 2-11:
Supply Current (I ) vs.
SS
DD
(V ) vs. Supply Voltage (V ).
Supply Voltage (V ).
BAT
DD
8.408
8.406
8.404
8.402
8.400
8.398
8.396
8.394
8.392
8.390
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
MCP73842-8.4V
IOUT = 10 mA
MCP73842-8.4V
IOUT = 10 mA
+55°C
+25°C
-5°C
-45°C
+25°C
+85°C
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
VDD (V)
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
VDD (V)
FIGURE 2-9:
Battery Regulation Voltage
FIGURE 2-12:
Supply Current (I ) vs.
SS
DD
(V ) vs. Supply Voltage (V ).
Supply Voltage (V ).
BAT
DD
2004 Microchip Technology Inc.
DS21823B-page 7
MCP73841/2/3/4
Note: Unless otherwise indicated, V = [V
(Typ) + 1V], I
= 10 mA and T = +25°C.
DD
REG
OUT
A
0.45
0.40
0.90
MCP73842-8.4V
VDD = Float
MCP73841-4.2V
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
VDD = Float
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
+85°C
+25°C
+85°C
+25°C
-45°C
-45°C
2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2
BAT (V)
4.0 4.4 4.8 5.2 5.6 6.0 6.4 6.8 7.2 7.6 8.0 8.4
BAT (V)
V
V
FIGURE 2-13:
Output Reverse Leakage
FIGURE 2-16:
Output Reverse Leakage
Current (I
) vs. Battery Voltage (V
).
Current (I
) vs. Battery Voltage (V
).
BAT
DISCHARGE
BAT
DISCHARGE
2.560
2.558
2.556
2.554
2.552
2.550
2.548
2.546
2.544
2.542
2.540
2.560
2.558
2.556
2.554
2.552
2.550
2.548
2.546
2.544
2.542
2.540
MCP73841-4.2V
MCP73842-8.4V
VDD = 9.4 V
V
DD = 5.2 V
+85°C
+25°C
+85°C
+25°C
-45°C
-45°C
0
25
50
75 100 125 150 175 200
ITHREF (µA)
0
25
50
75 100 125 150 175 200
ITHREF (µA)
FIGURE 2-14:
Voltage (V
THREF
Thermistor Reference
FIGURE 2-17:
Voltage (V
Thermistor Reference
) vs. Thermistor Bias Current
) vs. Thermistor Bias Current
THREF
THREF
(I
).
(I
).
THREF
2.568
2.564
2.560
2.556
2.552
2.548
2.544
2.540
2.568
2.564
2.560
2.556
2.552
2.548
2.544
2.540
MCP73841-4.2V
ITHREF = 100 µA
MCP73842-8.4V
ITHREF = 100 µA
+85°C
+25°C
+85°C
+25°C
-45°C
-45°C
4.5
6.0
7.5
9.0
10.5
12.0
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
VDD (V)
VDD (V)
FIGURE 2-15:
Voltage (V
Thermistor Reference
) vs. Supply Voltage (V ).
FIGURE 2-18:
Voltage (V
Thermistor Reference
) vs. Supply Voltage (V ).
THREF
DD
THREF
DD
DS21823B-page 8
2004 Microchip Technology Inc.
MCP73841/2/3/4
Note: Unless otherwise indicated, V = [V
(Typ) + 1V], I
= 10 mA and T = +25°C.
DD
REG
OUT
A
V
DD
V
DD
V
V
BAT
BAT
MCP73841-4.2V
MCP73841-4.2V
V
Stepped From 5.2V to 6.2V
= 500 mA
= 10 µF, X7R, Ceramic
DD
V
Stepped From 5.2V to 6.2V
= 10 mA
= 10 µF, X7R, Ceramic
DD
I
OUT
I
OUT
C
OUT
C
OUT
FIGURE 2-19:
Line Transient Response.
FIGURE 2-22:
Line Transient Response.
MCP73841-4.2V
= 5.2V
MCP73841-4.2V
= 5.2V
V
DD
V
DD
C
= 10 µF, X7R, Ceramic
OUT
C
= 10 µF, X7R, Ceramic
OUT
V
BAT
V
BAT
I
OUT
I
OUT
100 mA
10 mA
500 mA
10 mA
FIGURE 2-20:
Load Transient Response.
FIGURE 2-23:
Load Transient Response.
0
-10
-20
-30
-40
-50
-60
-70
0
-10
-20
-30
-40
-50
-60
-70
MCP73841-4.2V
MCP73841-4.2V
V
DD = 5.2 V
V
DD = 5.2 V
VAC = 100 mVp-p
OUT = 100 mA
COUT = 10 µF, X7R, CERAMIC
VAC = 100 mVp-p
OUT = 10 mA
COUT = 10 µF, X7R, CERAMIC
I
I
-80
0.01
-80
0.01
0.1
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
FIGURE 2-21:
Power Supply Ripple
FIGURE 2-24:
Power Supply Ripple
Rejection.
Rejection.
2004 Microchip Technology Inc.
DS21823B-page 9
MCP73841/2/3/4
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN DESCRIPTION TABLE
MCP73843,
MCP73841,
MCP73842
Pin No.
MCP73844
Pin No.
Name
Function
Charge Current Sense Input
Battery Management Input Supply
Charge Status Output
Logic Enable
1
2
3
1
2
3
SENSE
V
DD
STAT1
EN
4
4
5
6
7
—
—
5
THREF
THERM
TIMER
Cell Temperature Sensor Bias
Cell Temperature Sensor Input
Timer Set
8
9
10
6
7
8
V
Battery Management 0V Reference
Battery Voltage Sense
Drive Output
SS
V
BAT
DRV
3.1
Charge Current Sense Input
(SENSE)
3.6
Cell Temperature Sensor Input
(THERM)
Charge current is sensed via the voltage developed
across an external precision sense resistor. The sense
resistor must be placed between the supply voltage
Input for an external thermistor for continuous cell-
temperature monitoring and pre-qualification. Apply a
voltage equal to 0.85V to disable temperature-sensing.
(V ) and the external pass transistor (Q1). A 220 mΩ
DD
sense resistor produces a fast charge current of
500 mA, typically.
3.7
Timer Set (TIMER)
All safety timers are scaled by C
/0.1 µF.
TIMER
3.2
Battery Management Input Supply
(V
3.8
Battery Management 0V Reference
(V
)
DD
)
SS
Connect to negative terminal of battery.
A supply voltage of [V
recommended. Bypass to V
4.7 µF.
(Typ) + 0.3V] to 12V is
SS
REG
with a minimum of
3.9
Battery Voltage Sense (V
)
BAT
Voltage sense input. Connect to positive terminal of
3.3
Charge Status Output (STAT1)
battery. Bypass to V
with a minimum of 4.7 µF to
Current limited, open-drain drive for direct connection
to a LED for charge status indication. Alternatively, a
pull-up resistor can be applied for interfacing to a host
microcontroller.
SS
ensure loop stability when the battery is disconnected.
A precision internal resistor divider regulates the final
voltage on this pin to V
.
REG
3.10 Drive Output (DRV)
Direct output drive of an external P-channel MOSFET
for current and voltage regulation.
3.4
Logic Enable (EN)
Input to force charge termination, initiate charge, clear
faults or disable automatic recharge.
3.5
Cell Temperature Sensor Bias
(THREF)
Voltage reference to bias external thermistor for
continuous
cell
temperature
monitoring
and
prequalification.
DS21823B-page 10
2004 Microchip Technology Inc.
MCP73841/2/3/4
4.3
Constant-Voltage Regulation
4.0
DEVICE OVERVIEW
When the battery voltage reaches the regulation
The MCP7384X family of devices are highly advanced,
linear charge management controllers. Figure 4-1
depicts the operational flow algorithm from charge
initiation to completion and automatic recharge.
voltage (V ), constant-voltage regulation begins.
REG
The MCP7384X monitors the battery voltage at the
V
pin. This input is tied directly to the positive
BAT
terminal of the battery. The MCP7384X is offered in
four fixed-voltage versions for single or dual series cell
battery packs with either coke or graphite anodes:
4.1
Charge Qualification and
Preconditioning
- 4.1V (MCP73841-4.1, MCP73843-4.1)
- 4.2V (MCP73841-4.2, MCP73843-4.2)
- 8.2V (MCP73842-8.2, MCP73844-8.2)
- 8.4V (MCP73842-8.4, MCP73844-8.4)
Upon insertion of a battery or application of an external
supply, the MCP7384X family of devices automatically
perform a series of safety checks to qualify the charge.
The input source voltage must be above the
undervoltage lockout threshold, the enable pin must be
above the logic-high level and the cell temperature
monitor must be within the upper and lower thresholds.
The cell temperature monitor applies to both the
MCP73841 and MCP73842, with the qualification
parameters being continuously monitored. Deviation
beyond the limits automatically suspends or terminates
the charge cycle.
4.4
Charge Cycle Completion and
Automatic Re-Charge
The MCP7384X monitors the charging current during
the constant-voltage regulation phase. The charge
cycle is considered complete when the charge current
has diminished below approximately 7% of the
regulation current (I
expired.
) or the elapsed timer has
REG
Once the qualification parameters have been met, the
MCP7384X initiates a charge cycle. The charge status
output is pulled low throughout the charge cycle (see
Table 5-1 for charge status outputs). If the battery
The MCP7384X automatically begins a new charge
cycle when the battery voltage falls below the recharge
threshold (V
), assuming all the qualification
voltage is below the preconditioning threshold (V
),
RTH
PTH
parameters are met.
the MCP7384X preconditions the battery with a trickle-
charge. The preconditioning current is set to
approximately 10% of the fast charge regulation
current. The preconditioning trickle-charge safely
replenishes deeply depleted cells and minimizes heat
dissipation in the external pass transistor during the
initial charge cycle. If the battery voltage has not
exceeded the preconditioning threshold before the
preconditioning timer has expired, a fault is indicated
and the charge cycle is terminated.
4.2
Constant-Current Regulation –
Fast Charge
Preconditioning ends and fast charging begins, when
the battery voltage exceeds the preconditioning
threshold. Fast charge regulates to a constant-current,
I
, based on the supply voltage minus the voltage at
REG
the SENSE input (V
) developed by the drop across
FCS
an external sense resistor (R
). Fast charge
SENSE
continues until the battery voltage reaches the
regulation voltage (V
); or until the fast charge timer
REG
expires. In this case, a fault is indicated and the charge
cycle is terminated.
2004 Microchip Technology Inc.
DS21823B-page 11
Initialize
Note: The qualification parameters are continuously
monitored throughout the charge cycle.
VDD > VUVLO
EN High
Note
Note
No
STAT1 = Off
Yes
Temperature OK
Yes
No
STAT1 = Flashing
Charge Current = 0
Preconditioning Phase
No
Reset Safety Timer
STAT1 = On
Charge Current = IPREG
VBAT > VPTH
Yes
Constant-Current
Phase
Yes
Constant-Voltage Phase
VBAT > VPTH
Charge Current = IREG
Output Voltage = VREG
Reset Safety Timer
Charge Termination
Charge Current = 0
Reset Safety Timer
IOUT < ITERM
Yes
Yes
VBAT = VREG
No
Elapsed Timer
Expired
No
No
Fault
Yes
Yes
Yes
Yes
V
DD < VUVLO
Safety Timer
Expired
Safety Timer
Expired
Charge Current = 0
Reset Safety Timer
Temperature OK
VBAT < VRTH
or EN Low
No
No
No
No
Yes
STAT1 = Flashing
STAT1 = Off
Yes
Safety Timer Suspended
Charge Current = 0
VDD < VUVLO
or EN Low
Temperature OK
No
Temperature OK
No
No
Yes
STAT1 = Flashing
STAT1 = Flashing
STAT1 = Flashing
Safety Timer Suspended
Charge Current = 0
Safety Timer Suspended
Charge Current = 0
FIGURE 4-1:
Operational Flow Algorithm - MCP73841 and MCP73842.
MCP73841/2/3/4
For NTC thermistors:
5.0
DETAILED DESCRIPTION
Analog Circuitry
2 × RCOLD × RHOT
5.1
----------------------------------------------
RT1
RT2
=
=
R
COLD – RHOT
5.1.1
CHARGE CURRENT SENSE INPUT
(SENSE)
2 × RCOLD × RHOT
----------------------------------------------
R
COLD – 3 × RHOT
Fast charge current regulation is maintained by the
voltage drop developed across an external sense
resistor (R
) applied to the SENSE input pin. The
SENSE
For PTC thermistors:
following formula calculates the value for R
:
SENSE
2 × RCOLD × RHOT
----------------------------------------------
RT1
RT2
=
=
VFCS
IREG
R
HOT – RCOLD
------------
=
RSENSE
2 × RCOLD × RHOT
where:
is the desired fast charge current in amps
----------------------------------------------
R
HOT – 3 × RCOLD
I
REG
The preconditioning trickle-charge current and the
charge termination current are scaled to approximately
where:
R
and R
are the thermistor resistance
HOT
COLD
10% and 7% of I
, respectively.
values at the temperature window of interest.
REG
Applying a voltage equal to 0.85V to the THERM input
disables temperature monitoring.
5.1.2
BATTERY MANAGEMENT INPUT
SUPPLY (V
)
DD
input is the input supply to the MCP7384X.
The V
DD
5.1.5
TIMER SET INPUT (TIMER)
The MCP7384X automatically enters a power-down
The TIMER input programs the period of the safety
mode if the voltage on the V
input falls below the
STOP
DD
timers by placing a timing capacitor (C
) between
TIMER
undervoltage lockout voltage (V
). This feature
the TIMER input pin and V . Three safety timers are
SS
prevents draining the battery pack when the V
supply is not present.
DD
programmed via the timing capacitor.
The preconditioning safety timer period:
5.1.3
CELL TEMPERATURE SENSOR
BIAS (THREF)
CTIMER
tPRECON = ------------------ × 1.0Hours
0.1µF
A 2.55V voltage reference is provided to bias an
external thermistor for continuous cell temperature
monitoring and pre-qualification. A ratio metric window
comparison is performed at threshold levels of
The fast charge safety timer period:
CTIMER
tFAST = ------------------ × 1.5Hours
0.1µF
V
/2 and V
/4. Cell temperature monitoring
THREF
THREF
is provided by both the MCP73841 and MCP73842.
5.1.4
CELL TEMPERATURE SENSOR
INPUT (THERM)
The elapsed time termination period:
CTIMER
tTERM = ------------------ × 3.0Hours
0.1µF
The MCP73841 and MCP73842 continuously monitor
temperature by comparing the voltage between the
THERM input and V
with the upper and lower
SS
The preconditioning timer starts after qualification and
resets when the charge cycle transitions to the con-
stant-current, fast charge phase. The fast charge and
elapsed timers start once the MCP7384X transitions
from preconditioning. The fast charge timer resets
when the charge cycle transitions to the constant-volt-
age phase. The elapsed timer will expire and terminate
the charge if the sensed current does not diminish
below the termination threshold.
temperature thresholds.
A
negative or positive
temperature coefficient (NTC or PTC) thermistor and
an external voltage divider typically develop this
voltage. The temperature-sensing circuit has its own
reference, to which it performs
a ratio metric
comparison. Therefore, it is immune to fluctuations in
the supply input (V ). The temperature-sensing circuit
DD
is removed from the system when V
is not applied,
DD
eliminating additional discharge of the battery pack.
Figure 6-1 depicts a typical application circuit with
connection of the THERM input. The resistor values of
R
and
R
are calculated with the following
T2
T1
equations.
2004 Microchip Technology Inc.
DS21823B-page 13
MCP73841/2/3/4
5.1.6
BATTERY VOLTAGE SENSE (V
)
BAT
5.2
Digital Circuitry
The MCP7384X monitors the battery voltage at the
5.2.1
CHARGE STATUS OUTPUT (STAT1)
V
pin. This input is tied directly to the positive
BAT
terminal of the battery. The MCP7384X is offered in
four fixed-voltage versions for single or dual series cell
battery packs, with either coke or graphite anodes:
A status output provides information on the state-of-
charge. The current-limited, open-drain output can be
used to illuminate an external LED. Optionally, a pull-up
resistor can be used on the output for communication
with a host microcontroller. Table 5-1 summarizes the
state of the status output during a charge cycle.
- 4.1V (MCP73841-4.1, MCP73843-4.1)
- 4.2V (MCP73841-4.2, MCP73843-4.2)
- 8.2V (MCP73842-8.2, MCP73844-8.2)
- 8.4V (MCP73842-8.4, MCP73844-8.4)
TABLE 5-1:
STATUS OUTPUTS
Charge Cycle State
Stat1
5.1.7
DRIVE OUTPUT (DRV)
Qualification
Preconditioning
Constant-Current Fast
Charge
Constant-Voltage
Charge Complete
Safety Timer Fault
OFF
ON
ON
The MCP7384X controls the gate drive to an external
P-channel MOSFET. The P-channel MOSFET is
controlled in the linear region regulating current and
voltage supplied to the cell. The drive output is
automatically turned off when the voltage on the V
DD
ON
OFF
input falls below the undervoltage lockout voltage
(V ).
STOP
Flashing
(1 Hz, 50% duty cycle)
Cell Temperature Invalid
Flashing
(1 Hz, 50% duty cycle)
Disabled - Sleep mode
Battery Disconnected
OFF
OFF
The flashing rate (1 Hz) is based off a timer capacitor
(C ) of 0.1 µF. The rate will vary based on the
TIMER
value of the timer capacitor.
5.2.2
LOGIC ENABLE (EN)
The logic-enable input pin (EN) can be used to
terminate a charge anytime during the charge cycle,
initiate a charge cycle or initiate a recharge cycle.
Applying a logic-high input signal to the EN pin, or tying
it to the input source, enables the device. Applying a
logic-low input signal disables the device and
terminates a charge cycle. When disabled, the device’s
supply current is reduced to 0.25 µA, typically.
DS21823B-page 14
2004 Microchip Technology Inc.
MCP73841/2/3/4
cells: constant-current followed by constant-voltage.
Figure 6-1 depicts a typical stand-alone application
circuit, while Figure 6-2 depicts the accompanying
charge profile.
6.0
APPLICATIONS
The MCP7384X is designed to operate in conjunction
with either a host microcontroller or in stand-alone
applications. The MCP7384X provides the preferred
charge algorithm for Lithium-Ion and Lithium-Polymer
Voltage
Regulated
Wall Cube
Optional
Reverse
Blocking
Diode
Q
1
R
SENSE
+
-
DRV
10
SENSE
1
V
V
V
DD
BAT
9
8
7
6
2
3
4
5
STAT1
EN
SS
MCP73841
C
TIMER
TIMER
R
T1
THREF
THERM
R
T2
Battery
Pack
FIGURE 6-1:
Typical Application Circuit.
Preconditioning
Phase
Constant-Current
Phase
Constant-Voltage
Phase
Regulation Voltage
(V
)
REG
Regulation Current
(I
)
REG
Charge
Voltage
Transition Threshold
(V
)
PTH
Charge
Current
Precondition Current
(I
)
PREG
Termination Current
(I
)
TERM
Fast Charge
Safety Timer
Precondition
Safety Timer
Elapsed Time
Termination Timer
FIGURE 6-2:
Typical Charge Profile.
2004 Microchip Technology Inc.
DS21823B-page 15
MCP73841/2/3/4
6.1.1.2
External Pass Transistor
6.1
Application Circuit Design
The external P-channel MOSFET is determined by the
gate-to-source threshold voltage, input voltage, output
voltage and fast charge current. Therefore, the
selected P-channel MOSFET must satisfy the thermal
and electrical design requirements.
Due to the low efficiency of linear charging, the most
important factors are thermal design and cost, which are
a direct function of the input voltage, output current and
thermal impedance between the external P-channel
pass transistor and the ambient cooling air. The worst-
case situation occurs when the device has transitioned
from the preconditioning phase to the constant-current
phase. In this situation, the P-channel pass transistor
has to dissipate the maximum power. A trade-off must
be made between the charge current, cost and thermal
requirements of the charger.
Thermal Considerations
The worst-case power dissipation in the external pass
transistor occurs when the input voltage is at the
maximum and the device has transitioned from the
preconditioning phase to the constant-current phase.
In this case, the power dissipation is:
6.1.1
COMPONENT SELECTION
PowerDissipation = (V
– V
) × I
Selection of the external components in Figure 6-1 are
crucial to the integrity and reliability of the charging
system. The following discussion is intended to be a
guide for the component selection process.
DDMAX
PTHMIN
REGMAX
Where:
V
is the maximum input voltage.
DDMAX
REGMAX
I
is the maximum fast charge current.
6.1.1.1
Sense Resistor
V
is the minimum transition threshold voltage.
PTHMIN
The preferred fast charge current for Lithium-Ion cells
is at the 1C rate, with an absolute maximum current at
the 2C rate. For example, a 500 mAh battery pack has
a preferred fast charge current of 500 mA. Charging at
this rate provides the shortest charge cycle times
without degradation to the battery pack performance or
life.
Power dissipation with a 5V, ±10% input voltage
source, 220 mΩ, 1% sense resistor is:
PowerDissipation = (5.5V – 2.75V) × 551mA = 1.52W
Utilizing a Fairchild™ NDS8434 or an International
2
The current sense resistor (R
) is calculated by:
Rectifier IRF7404 mounted on a 1in pad of 2 oz.
SENSE
copper, the junction temperature rise is 75°C,
approximately. This would allow for a maximum
operating ambient temperature of 75°C.
VFCS
------------
IREG
RSENSE
=
Where:
is the desired fast charge current.
By increasing the size of the copper pad, a higher
ambient temperature can be realized, or a lower value
sense resistor could be utilized.
I
REG
Alternatively, different package options can be utilized
for more or less power dissipation. Again, design trade-
offs should be considered to minimize size while
maintaining the desired performance.
For the 500 mAh battery pack example, a standard
value 220 mΩ, 1% resistor provides a typical fast
charge current of 500 mA and a maximum fast charge
current of 551 mA. Worst-case power dissipation in the
sense resistor is:
Electrical Considerations
PowerDissipation = 220mΩ × 551mA2 = 66.8mW
The gate-to-source threshold voltage and R
of the
DSON
external P-channel MOSFET must be considered in the
design phase.
®
A Panasonic ERJ-6RQFR22V, 220 mW, 1%, 1/8W
The worst-case V provided by the controller occurs
resistor in a standard 0805 package is more than
sufficient for this application.
GS
when the input voltage is at the minimum and the fast
charge current regulation threshold is at the maximum.
A larger value sense resistor will decrease the fast
charge current and power dissipation in both the sense
resistor and external pass transistor, but will increase
charge cycle times. Design trade-offs must be
considered to minimize space while maintaining the
desired performance.
The worst-case V is:
GS
VGS = VDRVMAX – (VDDMIN – VFCSMAX
)
Where:
DRVMAX
V
is the maximum sink voltage at the
DRV
is the minimum input voltage source
is the maximum fast charge current
regulation threshold
V
output
V
V
DDMIN
FCSMAX
DS21823B-page 16
2004 Microchip Technology Inc.
MCP73841/2/3/4
Worst-case V with a 5V, ±10% input voltage source
6.1.1.5
ENABLE INTERFACE
GS
and a maximum sink voltage of 1.0V is:
In the stand-alone configuration, the enable pin is
generally tied to the input voltage. The MCP7384X
automatically enters a Low-power mode when voltage
VGS = 1.0V – (4.5V – 120mV) = –3.38V
on the V
input falls below the undervoltage lockout
), reducing the battery drain current to
DD
STOP
At this worst-case (V ) the R
of the MOSFET
voltage (V
GS
DSON
must be low enough as to not impede the performance
of the charging system. The maximum allowable
0.4 µA, typically.
6.1.1.6
CHARGE STATUS INTERFACE
R
at the worst-case V is:
GS
DSON
A status output provides information on the state of
charge. The current-limited, open-drain output can be
used to illuminate an external LED. Refer to Table 5-1
for a summary of the state of the status output during a
charge cycle.
V
– VFCSMAX – VBATMAX
IREGMAX
-----D---D----M----I--N-------------------------------------------------------------
RDSON
=
4.5V – 120(115)mV – 4.221V
------------------------------------------------------------------------
= 288mΩ
RDSON
=
551(581)mA
6.2
PCB Layout Issues
The Fairchild NDS8434 and International Rectifier
IRF7404 both satisfy these requirements.
For optimum voltage regulation, place the battery pack
as close as possible to the device’s V
and V pins.
SS
BAT
6.1.1.3
EXTERNAL CAPACITORS
This is recommended to minimize voltage drops along
the high current-carrying PCB traces.
The MCP7384X are stable with or without a battery
load. In order to maintain good AC stability in the
Constant-Voltage mode, a minimum capacitance of
If the PCB layout is used as a heatsink, adding many
vias around the external pass transistor can help
conduct more heat to the back plane of the PCB, thus
reducing the maximum junction temperature.
4.7 µF is recommended to bypass the V
pin to V
.
SS
BAT
This capacitance provides compensation when there is
no battery load. Additionally, the battery and
interconnections appear inductive at high frequencies.
These elements are in the control feedback loop during
Constant-Voltage mode. Therefore, the bypass
capacitance may be necessary to compensate for the
inductive nature of the battery pack.
Virtually any good quality output filter capacitor can be
used, independent of the capacitor’s minimum ESR
(Effective Series Resistance) value. The actual value of
the capacitor and its associated ESR depends on the
forward transconductance (g ) and capacitance of the
m
external pass transistor.
A 4.7 µF tantalum or
aluminum electrolytic capacitor at the output is usually
sufficient to ensure stability for up to a 1A output
current.
6.1.1.4
REVERSE-BLOCKING PROTECTION
The optional reverse-blocking protection diode,
depicted in Figure 6-1, provides protection from a
faulted or shorted input, or from a reversed-polarity
input source. Without the protection diode, a faulted or
shorted input would discharge the battery pack through
the body diode of the external pass transistor.
If a reverse-protection diode is incorporated into the
design, it should be chosen to handle the fast charge
current continuously at the maximum ambient
temperature. In addition, the reverse-leakage current
of the diode should be kept as small as possible.
2004 Microchip Technology Inc.
DS21823B-page 17
MCP73841/2/3/4
7.0
PACKAGING INFORMATION
7.1
Package Marking Information
Example:
8-Lead MSOP (MCP73843, MCP73844)
738431
0319256
XXXXX
YWWNNN
Example:
10-Lead MSOP (MCP73841, MCP73842)
738411
XXXXX
0319256
YYWWNNN
Legend: XX...X Customer specific information*
YY
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
WW
NNN
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line thus limiting the number of available characters
for customer specific information.
*
Standard marking consists of Microchip part number, year code, week code, and traceability code.
DS21823B-page 18
2004 Microchip Technology Inc.
MCP73841/2/3/4
8-Lead Plastic Micro Small Outline Package (MS) (MSOP)
E
E1
p
D
2
B
n
1
α
A2
A
c
φ
A1
(F)
L
β
Units
Dimension Limits
INCHES
NOM
MILLIMETERS*
MIN
MAX
MIN
NOM
MAX
n
p
Number of Pins
Pitch
8
8
.026 BSC
0.65 BSC
Overall Height
A
A2
A1
E
-
-
.043
-
-
1.10
Molded Package Thickness
Standoff
.030
.000
.033
-
.037
.006
0.75
0.00
0.85
-
0.95
0.15
Overall Width
.193 TYP.
4.90 BSC
Molded Package Width
Overall Length
Foot Length
E1
D
.118 BSC
.118 BSC
3.00 BSC
3.00 BSC
L
.016
.024
.037 REF
.031
0.40
0.60
0.95 REF
0.80
Footprint (Reference)
Foot Angle
F
φ
c
0°
.003
.009
5°
-
8°
.009
.016
15°
0°
0.08
0.22
5°
-
-
-
-
-
8°
0.23
0.40
15°
Lead Thickness
Lead Width
.006
B
α
β
.012
Mold Draft Angle Top
Mold Draft Angle Bottom
*Controlling Parameter
Notes:
-
-
5°
15°
5°
15°
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
exceed .010" (0.254mm) per side.
JEDEC Equivalent: MO-187
Drawing No. C04-111
2004 Microchip Technology Inc.
DS21823B-page 19
MCP73841/2/3/4
10-Lead Plastic Micro Small Outline Package (UN) (MSOP)
E
E1
p
D
2
1
B
n
α
A
φ
c
A2
A1
L
(F)
β
L1
Units
Dimension Limits
INCHES
NOM
MILLIMETERS*
NOM
MIN
MAX
MIN
MAX
n
p
Number of Pins
Pitch
10
.020 TYP
10
0.50 TYP.
Overall Height
Molded Package Thickness
Standoff
A
A2
A1
E
-
-
.043
-
-
0.85
-
1.10
0.95
0.15
.030
.000
.033
-
.037
.006
0.75
0.00
Overall Width
.193 BSC
4.90 BSC
Molded Package Width
Overall Length
Foot Length
E1
D
.118 BSC
.118 BSC
3.00 BSC
3.00 BSC
L
.016
.024
.037 REF
.031
0.40
0.60
0.95 REF
0.80
Footprint
F
φ
Foot Angle
0°
.003
.006
5°
-
-
8°
.009
.012
15°
0°
0.08
0.15
5°
-
-
8°
0.23
0.30
15°
c
Lead Thickness
Lead Width
B
α
β
.009
0.23
Mold Draft Angle Top
Mold Draft Angle Bottom
*Controlling Parameter
Notes:
-
-
-
-
5°
15°
5°
15°
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
exceed .010" (0.254mm) per side.
JEDEC Equivalent: MO-187
Drawing No. C04-021
DS21823B-page 20
2004 Microchip Technology Inc.
MCP73841/2/3/4
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
Examples:
PART NO.
XXX
X
XX
a)
MCP73841-410I/UN: 4.1V Preset Voltage
Device
Preset Temperature Package
b)
MCP73841T-410I/UN: 4.1V Preset Voltage,
Tape and Reel
Voltage
Options
Range
c)
d)
MCP73841-420I/UN: 4.2V Preset Voltage
MCP73841T-420I/UN: 4.2V Preset Voltage,
Tape and Reel
Device
MCP73841:
Single-cell charge controller with temperature
monitor
a)
b)
MCP73842-820I/UN: 8.2V Preset Voltage
MCP73842T-820I/UN: 8.2V Preset Voltage,
Tape and Reel
MCP73841T: Single-cell charge controller with temperature
monitor, Tape and Reel
MCP73842:
Dual series cells charge controller with tem-
perature monitor
c)
d)
MCP73842-840I/UN: 8.4V Preset Voltage
MCP73842T-840I/UN: 8.4V Preset Voltage,
Tape and Reel
MCP73842T: Dual series cells charge controller with tem-
perature monitor, Tape and Reel
MCP73843:
Single-cell charge controller
MCP73843T: Single-cell charge controller, Tape and Reel
a)
b)
MCP73843-410I/MS: 4.1V Preset Voltage
MCP73843T-410I/MS: 4.1V Preset Voltage,
Tape and Reel
MCP73844:
Dual series cells charge controller
MCP73844T: Dual series cells charge controller,
Tape and Reel
c)
d)
MCP73843-420I/MS: 4.2V Preset Voltage
MCP73843T-420I/MS: 4.2V Preset Voltage,
Tape and Reel
Preset Voltage
410
420
820
840
=
=
=
=
4.1V
4.2V
8.2V
8.4V
Regulation Options
a)
b)
MCP73844-820I/MS: 8.2V Preset Voltage
MCP73844T-820I/MS: 8.2V Preset Voltage,
Tape and Reel
c)
d)
MCP73844-840I/MS: 8.4V Preset Voltage
MCP73844T-840I/MS: 8.4V Preset Voltage,
Tape and Reel
Temperature Range
Package
I
= -40°C to +85°C (Industrial)
MS
UN
=
Plastic Micro Small Outline (MSOP), 8-lead
Plastic Micro Small Outline (MSOP), 10-lead
=
Sales and Support
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and
recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office
2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
2004 Microchip Technology Inc.
DS21823B-page 21
MCP73841/2/3/4
NOTES:
DS21823B-page 22
2004 Microchip Technology Inc.
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 of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical
components in life support systems is not authorized except
with express written approval by Microchip. No licenses are
conveyed, implicitly or otherwise, under any intellectual
property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE, PowerSmart and rfPIC are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER,
SEEVAL, SmartShunt and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Application Maestro, dsPICDEM, dsPICDEM.net,
dsPICworks, ECAN, ECONOMONITOR, FanSense,
FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP,
ICEPIC, Migratable Memory, MPASM, MPLIB, MPLINK,
MPSIM, PICkit, PICDEM, PICDEM.net, PICtail, PowerCal,
PowerInfo, PowerMate, PowerTool, rfLAB, Select Mode,
SmartSensor, SmartTel and Total Endurance are trademarks
of Microchip Technology Incorporated in the U.S.A. and other
countries.
Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2004, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in October
2003. The Company’s quality system processes and procedures are for
®
its PICmicro 8-bit MCUs, KEELOQ® code hopping devices, Serial
EEPROMs, microperipherals, nonvolatile memory and analog
products. In addition, Microchip’s quality system for the design and
manufacture of development systems is ISO 9001:2000 certified.
2004 Microchip Technology Inc.
DS21823B-page 23
M
WORLDWIDE SALES AND SERVICE
China - Beijing
Korea
AMERICAS
Unit 706B
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
Corporate Office
Wan Tai Bei Hai Bldg.
No. 6 Chaoyangmen Bei Str.
Beijing, 100027, China
Tel: 86-10-85282100
Fax: 86-10-85282104
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Tel: 82-2-554-7200 Fax: 82-2-558-5932 or
82-2-558-5934
Fax: 480-792-7277
Singapore
Technical Support: 480-792-7627
Web Address: http://www.microchip.com
China - Chengdu
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Rm. 2401-2402, 24th Floor,
Ming Xing Financial Tower
No. 88 TIDU Street
Atlanta
3780 Mansell Road, Suite 130
Alpharetta, GA 30022
Tel: 770-640-0034
Fax: 770-640-0307
Tel: 65-6334-8870 Fax: 65-6334-8850
Chengdu 610016, China
Tel: 86-28-86766200
Taiwan
Kaohsiung Branch
30F - 1 No. 8
Fax: 86-28-86766599
Boston
Min Chuan 2nd Road
Kaohsiung 806, Taiwan
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Fuzhou
2 Lan Drive, Suite 120
Westford, MA 01886
Tel: 978-692-3848
Fax: 978-692-3821
Unit 28F, World Trade Plaza
No. 71 Wusi Road
Fuzhou 350001, China
Tel: 86-591-7503506
Fax: 86-591-7503521
Taiwan
Taiwan Branch
Chicago
11F-3, No. 207
China - Hong Kong SAR
333 Pierce Road, Suite 180
Itasca, IL 60143
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
Unit 901-6, Tower 2, Metroplaza
223 Hing Fong Road
Tel: 630-285-0071
Fax: 630-285-0075
Kwai Fong, N.T., Hong Kong
Tel: 852-2401-1200
Dallas
EUROPE
Austria
Fax: 852-2401-3431
4570 Westgrove Drive, Suite 160
Addison, TX 75001
Tel: 972-818-7423
Fax: 972-818-2924
China - Shanghai
Durisolstrasse 2
Room 701, Bldg. B
A-4600 Wels
Far East International Plaza
No. 317 Xian Xia Road
Shanghai, 200051
Austria
Detroit
Tel: 43-7242-2244-399
Fax: 43-7242-2244-393
Denmark
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: 248-538-2250
Tel: 86-21-6275-5700
Fax: 86-21-6275-5060
Regus Business Centre
Lautrup hoj 1-3
China - Shenzhen
Rm. 1812, 18/F, Building A, United Plaza
No. 5022 Binhe Road, Futian District
Shenzhen 518033, China
Tel: 86-755-82901380
Fax: 248-538-2260
Ballerup DK-2750 Denmark
Tel: 45-4420-9895 Fax: 45-4420-9910
Kokomo
France
2767 S. Albright Road
Kokomo, IN 46902
Tel: 765-864-8360
Fax: 765-864-8387
Parc d’Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Fax: 86-755-8295-1393
China - Shunde
Room 401, Hongjian Building, No. 2
Los Angeles
Fengxiangnan Road, Ronggui Town, Shunde
District, Foshan City, Guangdong 528303, China
Tel: 86-757-28395507 Fax: 86-757-28395571
18201 Von Karman, Suite 1090
Irvine, CA 92612
Germany
Tel: 949-263-1888
China - Qingdao
Steinheilstrasse 10
D-85737 Ismaning, Germany
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Fax: 949-263-1338
Rm. B505A, Fullhope Plaza,
No. 12 Hong Kong Central Rd.
Qingdao 266071, China
San Jose
1300 Terra Bella Avenue
Mountain View, CA 94043
Tel: 650-215-1444
Tel: 86-532-5027355 Fax: 86-532-5027205
Italy
India
Via Quasimodo, 12
20025 Legnano (MI)
Milan, Italy
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, O’Shaugnessey Road
Bangalore, 560 025, India
Tel: 91-80-22290061 Fax: 91-80-22290062
Japan
Fax: 650-961-0286
Toronto
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699
Fax: 905-673-6509
P. A. De Biesbosch 14
NL-5152 SC Drunen, Netherlands
Tel: 31-416-690399
Benex S-1 6F
3-18-20, Shinyokohama
ASIA/PACIFIC
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Fax: 31-416-690340
Australia
United Kingdom
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
505 Eskdale Road
Winnersh Triangle
Wokingham
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
Berkshire, England RG41 5TU
Tel: 44-118-921-5869
Fax: 44-118-921-5820
02/17/04
DS21823B-page 24
2004 Microchip Technology Inc.
相关型号:
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