MICROCHIP MCP73841, MCP73842, MCP73843, MCP73844 Technical data
查询MCP73841供应商
M
MCP73841/2/3/4
Advanced Single or Dual Cell Lithium-Ion/
Lithium-Polymer Charge Management Controllers
Features
• 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)
• 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
Applications
• Lithium-Ion/Lithium-Polymer Battery Chargers
• Personal Data Assistants
• Cellular Telephones
• Hand-Held Instruments
• Cradle Chargers
• Digital Cameras
• MP3 Players
Typical Application Circuit
1A Lithium-Ion Battery Charger
MA2Q705
5V
10 µF
100 mΩ
100 kΩ
NDS8434
Single
+
1
8
DRVSENSE
2
V
DDVBAT
36
STAT1
4
EN5TIMER
MCP73843
7
V
SS
-
10 µF
0.1 µF
Lithium-Ion
Cell
Description
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 preconditioning, 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 LithiumPolymer 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.
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.
The MCP7384X family of devices are fully specified
over the ambient temperature range of -40°C to +85°C.
Package Types
10-Pin MSOP
SENSE DRV
V
DD
STAT1
EN
THREF
SENSE
V
DD
STAT1
EN
1
2
3
4
MCP73841
MCP73843
MCP73842
MCP73844
5
8-Pin MSOP
1
2
3
4
10
V
9
8
7
6
8
7
6
5
BAT
V
SS
TIMER
THERM
DRV
V
BAT
V
SS
TIMER
2004 Microchip Technology Inc. DS21823B-page 1
MCP73841/2/3/4
Functional Block Diagram
90 kΩ
10 kΩ
1kΩ
V
REF
–
Charge
+
Current
Amplifier
Charge
Termination
Comparator
+
-
UVLO
Comparator
+
-
V
UVLO
12 kΩ
I
REG
90 kΩ
10 kΩ
/10
Power-On
Delay
V
DD
SENSE
EN
V
REF
Charge Current
Control Amplif ier
+
–
Precondition
Control
V
DD
Charge_ok
Precon
Voltage Control
Amplifier
+
-
V
REF
Precondition
Comp
.
Constant-Voltage/
Recharge Comp.
V
+
-
+
-
REF
300 kΩ
(825 kΩ)
74.21 kΩ
0.79 kΩ
150.02 kΩ
DRV
V
BAT
THREF
THERM
TIMER
Bias and
Reference
Generator
100 kΩ
50 kΩ
50 kΩ
MCP73841 and MCP73842 Only
Temperature
Comparators
+
-
+
-
V
V
UVLO
REF
(1.2V)
I
REG
Oscillator
/10
Charge Control,
Charge Timers,
And
Status Logic
Drv Stat 1
Charge_ok
5.15 kΩ
(4.29 kΩ)
V
SS
STAT1
DS21823B-page 2 2004 Microchip Technology Inc.
MCP73841/2/3/4
1.0 ELECTRICAL
CHARACTERISTICS
*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
Absolute Maximum Ratings †
operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may
VDD.................................................................................13.5V
All inputs and outputs w.r.t. V
................ -0.3 to (VDD+0.3)V
SS
affect device reliability.
Current at DRV Pin ......................................................±4 mA
Current at STAT1 Pin ................................................. ±30 mA
Maximum Junction Temperature, T
............................. 150°C
J
Storage temperature .....................................-65°C to +150°C
ESD protection on all pins:
Human Body Model (1.5 kΩ in Series with 100 pF) .......≥ 2kV
Machine Model (200 pF, No Series Resistance) .............200V
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [V
Typical values are at +25°C, V
DD
= [V
(Typ) + 1V].
REG
Parameters Sym Min Typ Max Units Conditions
Supply Input
Supply Voltage V
DD
MCP73841, MCP73843 4.5 – 12 V
MCP73842, MCP73844 8.7 – 12 V
Supply Current I
UVLO Start Threshold V
SS
START
0.25
–
0.75
4
4
–
MCP73841, MCP73843 4.25 4.45 4.60 V VDD Low-to-High
MCP73842, MCP73844 8.45 8.65 8.90 V V
UVLO Stop Threshold V
STOP
MCP73841, MCP73843 4.20 4.40 4.55 V VDD High-to-Low
MCP73842, MCP73844 8.40 8.60 8.85 V V
Voltage Regulation (Constant-Voltage Mode)
Regulated Output Voltage V
MCP73841-4.1,
REG
4.079 4.1 4.121 V VDD = [V
MCP73843-4.1
MCP73841-4.2,
4.179 4.2 4.221 V V
MCP73843-4.2
MCP73842-8.2,
8.159 8.2 8.241 V V
MCP73844-8.2
MCP73842-8.4,
8.358 8.4 8.442 V V
MCP73844-8.4
/
Line Regulation |(∆V
V
BAT
Load Regulation |∆V
BAT
BAT
)|/∆V
|/V
BAT
– 0.025 0.25 %/V VDD = [V
DD
– 0.01 0.25 % I
Supply Ripple Attenuation PSRR – -58 – dB I
–-42– dBI
–-30– dBI
Output Reverse Leakage
Current
I
DISCHARGE
–0.41 µAVDD Floating, V
Current Regulation (Fast Charge Constant-Current Mode)
Fast Charge Current
Regulation Threshold
V
FCS
100 110 120 mV VDD – V
(Typ)+0.3V] to 12V, TA = -40°C to +85°C.
REG
µAmADisabled
Operating
V
DD
DD
DD
T
= -5°C to +55°C
A
DD
T
= -5°C to +55°C
A
DD
T
= -5°C to +55°C
A
DD
T
= -5°C to +55°C
A
I
OUT
OUT
V
DD
OUT
OUT
OUT
TA = -5°C to +55°C
=V
(Typ)+1V
REG
Low-to-High
High-to-Low
(Typ)+1V], I
REG
= [V
(Typ)+1V], I
REG
= [V
(Typ)+1V], I
REG
= [V
(Typ)+1V], I
REG
(Typ)+1V] to 12V,
REG
= 10 mA
= 10 mA to 150 mA,
= [V
(Typ)+1V]
REG
= 10 mA, 100 Hz
= 10 mA, 1 kHz
= 10 mA, 10 kHz
= V
BAT
SENSE,
OUT
OUT
OUT
OUT
REG
= 10 mA,
= 10 mA,
= 10 mA,
= 10 mA,
(Typ)
2004 Microchip Technology Inc. DS21823B-page 3
MCP73841/2/3/4
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [V
Typical values are at +25°C, V
Parameters Sym Min Typ Max Units Conditions
Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)
Precondition Current
Regulation Threshold
Precondition Threshold Voltage V
MCP73841-4.1,
MCP73843-4.1
MCP73841-4.2,
MCP73843-4.2
MCP73842-8.2,
MCP73844-8.2
MCP73842-8.4,
MCP73844-8.4
Charge Termination
Charge Termination Threshold V
Automatic Recharge
Recharge Threshold Voltage V
MCP73841,
MCP73843
MCP73842,
MCP73844
External MOSFET Gate Drive
Gate Drive Current I
Gate Drive Minimum Voltage V
Gate - Source Clamp Voltage V
Thermistor Reference - MCP73841, MCP73842
Thermistor Reference Output
Vol tage
Temperature Coefficient TC
Thermistor Reference Source
Current
Thermistor Reference Line
Regulation
Thermistor Reference Load
Regulation
Thermistor Comparator - MCP73841, MCP73842
Upper Trip Threshold V
Upper Trip Point Hysteresis V
Lower Trip Threshold V
Lower Trip Point Hysteresis V
Input Bias Current |I
Status Indicator
Sink Current I
Low Output Voltage V
Input Leakage Current I
DD
= [V
(Typ) + 1V].
REG
V
PCS
PTH
51015mVVDD – V
2.70 2.80 2.90 V V
2.75 2.85 2.95 V V
5.40 5.60 5.80 V V
5.50 5.70 5.90 V V
TCS
RTH
DRV
4710mVV
V
-
V
-
REG
300 mV
V
REG
600 mV
-
200 mV
V
400 mV
REG
REG
-
V
REG
100 mV
V
REG
200 mV
– 2 – mA Sink, CV Mode
– -0.5 – mA Source, CV Mode
DRVMIN
GS
V
THREF
THREF
I
THREF
|(∆V
THREF
V
)|/
THREF
∆V
DD
∆V
THREF
V
THREF
T1
T1HYS
T2
T2HYS
| ––2µA
BIAS
SINK
OL
LK
––1.0VV
-7.0 – -4.5 V VDD = 12.0V
2.475 2.55 2.625 V TA = +25°C, VDD = V
–+50 – ppm/°C
200 – – µA
/
–0.10.25%/VVDD=[V
/
– 0.01 0.10 % I
1.18 1.25 1.32 V
–-50– mV
0.59 0.62 0.66 V
–80– mV
4712mA
– 200 400 mV I
–0.011 µAI
(Typ)+0.3V] to 12V, TA = -40°C to +85°C.
REG
SENSE,
TA = -5°C to +55°C
Low-to-High
BAT
Low-to-High
BAT
Low-to-High
BAT
Low-to-High
BAT
– V
DD
SENSE,
TA = -5°C to +55°C
-
-
VV
VV
High-to-Low
BAT
High-to-Low
BAT
= 4.5V
DD
I
= 0 mA
THREF
REG
= 0 mA to 0.20 mA
THREF
= 1 mA
SINK
= 0 mA, V
SINK
(Typ)+1V] to 12V
STAT1
(Typ)+1V,
REG
= 12V
DS21823B-page 4 2004 Microchip Technology Inc.
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [V
Typical values are at +25°C, V
DD
= [V
(Typ) + 1V].
REG
Parameters Sym Min Typ Max Units Conditions
Enable Input
Input High-Voltage Level V
Input Low-Voltage Level V
Input Leakage Current I
IH
IL
LK
1.4 - – V
–-0.8V
–0.011 µAV
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for V
ical values are at +25°C, V
DD
= [V
(Typ)+1V].
REG
Parameters Sym Min Typ Max Units Conditions
UVLO Start Delay t
START
––5msecV
Current Regulation
Transition Time Out of
Preconditioning
Current Rise Time Out of
Preconditioning
Fast Charge Safety Timer Period t
t
DELAY
t
RISE
FAST
––1msecV
––1msecI
1.2 1.4 1.6 Hours C
Preconditioning Current Regulation
Preconditioning Charge Safety
Timer Period
t
PRECON
50 60 70 Minutes C
Charge Termination
Elapsed Time Termination Period t
TERM
2.5 2.9 3.3 Hours C
Status Indicators
Status Output turn-off t
Status Output turn-on t
OFF
ON
––200µsecI
––200µsecI
DD
= [V
MCP73841/2/3/4
(Typ)+0.3V] to 12V, TA = -40°C to +85°C.
REG
= 12V
ENABLE
(Typ)+0.3V] to 12V, TA = -40°C to +85°C. Typ-
REG
Low-to-High
DD
< V
to V
BAT
PTH
Rising to 90% of I
OUT
= 0.1 µF
TIMER
= 0.1 µF
TIMER
= 0.1 µF
TIMER
= 10 mA to 0 mA
SINK
= 0 mA to 10 mA
SINK
BAT
> V
PTH
REG
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise specified, all limits apply for V
Typical values are at +25°C, V
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range T
Operating Temperature Range T
Storage Temperature Range T
Thermal Package Resistances
Thermal Resistance, MSOP-10 θ
Thermal Resistance, MSOP-8 θ
DD
= [V
(Typ)+1.0V].
REG
A
A
A
JA
JA
-40 +85 °C
-40 +125 °C
-65 +150 °C
113 °C/W 4-Layer JC51-7 Standard Board,
206 °C/W Single-Layer SEMI G42-88 Board,
DD
= [V
(Typ)+0.3V] to 12V.
REG
Natural Convection
Natural Convection
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
4.203
4.202
+55°C
4.201
+25°C
4.200
(V)
BAT
4.199
V
4.198
-5°C
4.197
4.196
10 100 1000
(mA)
I
OUT
= [V
DD
MCP73841-4.2V
= 5.2 V
V
DD
(Typ) + 1V], I
REG
FIGURE 2-1: Battery Regulation Voltage
(V
) vs. Charge Current (I
BAT
4.203
4.202
4.201
4.200
(V)
BAT
4.199
V
4.198
4.197
4.196
4.5 6.0 7.5 9.0 10.5 12.0
+55°C
+25°C
-5°C
MCP73841-4.2V
I
OUT
= 1000 mA
V
).
OUT
(V)
DD
= 10 mA and TA= +25°C.
OUT
1.40
1.20
1.00
0.80
(mA)
0.60
SS
I
0.40
0.20
0.00
10 100 1000
MCP73841-4.2V
= 5.2 V
V
DD
(mA)
I
OUT
FIGURE 2-4: Supply Current (I
Charge Current (I
1.40
1.20
1.00
0.80
(mA)
0.60
SS
I
0.40
0.20
0.00
+85°C
+25°C
-45°C
4.5 6.0 7.5 9.0 10.5 12.0
).
OUT
MCP73841-4.2V
= 1000 mA
I
OUT
(V)
V
DD
+25°C
+85°C
-45°C
SS
) vs.
FIGURE 2-2: Battery Regulation Voltage
) vs. Supply Voltage (VDD).
(V
BAT
4.203
4.202
4.201
4.200
(V)
BAT
4.199
V
4.198
4.197
4.196
4.5 6.0 7.5 9.0 10.5 12.0
+55°C
+25°C
-5°C
MCP73841-4.2V
= 10 mA
I
OUT
(V)
V
DD
FIGURE 2-3: Battery Regulation Voltage
) vs. Supply Voltage (VDD).
(V
BAT
FIGURE 2-5: Supply Current (I
Supply Voltage (V
1.40
1.20
1.00
0.80
(mA)
0.60
SS
I
0.40
0.20
0.00
4.5 6.0 7.5 9.0 10.5 12.0
).
DD
MCP73841-4.2V
I
OUT
= 10 mA
(V)
V
DD
FIGURE 2-6: Supply Current (I
Supply Voltage (V
DD
).
SS
SS
) vs.
-45°C
+25°C
+85°C
) vs.
DS21823B-page 6 2004 Microchip Technology Inc.
MCP73841/2/3/4
Note: Unless otherwise indicated, V
8.408
8.406
8.404
+55°C
8.402
+25°C
8.400
(V)
8.398
BAT
V
8.396
8.394
-5°C
8.392
8.390
10 100 1000
I
(mA)
OUT
= [V
DD
MCP73842-8.4V
= 9.4 V
V
DD
(Typ) + 1V], I
REG
FIGURE 2-7: Battery Regulation Voltage
(V
) vs. Charge Current (I
BAT
8.408
8.406
8.404
8.402
8.400
(V)
8.398
BAT
V
8.396
8.394
8.392
8.390
8.8 9.2 9.6 10 10.4 10.8 11.2 11.6 12
MCP73842-8.4V
I
+55°C
+25°C
-5°C
= 1000 mA
OUT
V
).
OUT
(V)
DD
= 10 mA and TA= +25°C.
OUT
1.40
1.20
1.00
0.80
(mA)
0.60
SS
I
0.40
0.20
0.00
10 100 1000
MCP73842-8.4V
= 9.4 V
V
DD
(mA)
I
OUT
FIGURE 2-10: Supply Current (I
Charge Current (I
1.40
1.20
1.00
0.80
(mA)
0.60
SS
I
0.40
0.20
0.00
+85°C
+25°C
-45°C
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
).
OUT
MCP73842-8.4V
I
OUT
= 1000 mA
(V)
V
DD
+25°C
SS
+85°C
-45°C
) vs.
FIGURE 2-8: Battery Regulation Voltage
) vs. Supply Voltage (VDD).
(V
BAT
8.408
MCP73842-8.4V
(V)
BAT
V
8.406
8.404
8.402
8.400
8.398
8.396
8.394
8.392
8.390
= 10 mA +55°C
I
OUT
+25°C
-5°C
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
(V)
V
DD
FIGURE 2-9: Battery Regulation Voltage
) vs. Supply Voltage (VDD).
(V
BAT
FIGURE 2-11: Supply Current (I
Supply Voltage (V
1.40
1.20
1.00
0.80
(mA)
0.60
SS
I
0.40
0.20
0.00
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
).
DD
MCP73842-8.4V
I
OUT
= 10 mA
(V)
V
DD
FIGURE 2-12: Supply Current (I
Supply Voltage (V
DD
).
SS
SS
) vs.
-45°C
+25°C
+85°C
) vs.
2004 Microchip Technology Inc. DS21823B-page 7
MCP73841/2/3/4
Note: Unless otherwise indicated, V
0.45
0.40
0.35
0.30
(µA)
0.25
0.20
0.15
DISCHARGE
I
0.10
0.05
0.00
+85°C
+25°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
MCP73841-4.2V
= Float
V
DD
V
(V)
BAT
DD
= [V
(Typ) + 1V], I
REG
FIGURE 2-13: Output Reverse Leakage
Current (I
2.560
2.558
2.556
2.554
2.552
(V)
2.550
THREF
2.548
V
2.546
2.544
2.542
2.540
DISCHARGE
+85°C
+25°C
-45°C
0 25 50 75 100 125 150 175 200
) vs. Battery Voltage (V
MCP73841-4.2V
V
= 5.2 V
DD
(µA)
I
THREF
BAT
= 10 mA and TA= +25°C.
OUT
0.90
0.80
0.70
0.60
(µA)
0.50
0.40
0.30
DISCHARGE
I
0.20
0.10
0.00
4.0 4.4 4.8 5.2 5.6 6.0 6.4 6.8 7.2 7.6 8.0 8.4
MCP73842-8.4V
= Float
V
DD
V
(V)
BAT
+85°C
+25°C
-45°C
FIGURE 2-16: Output Reverse Leakage
).
Current (I
2.560
2.558
2.556
2.554
2.552
(V)
2.550
THREF
2.548
V
2.546
2.544
2.542
2.540
DISCHARGE
+85°C
+25°C
-45°C
0 25 50 75 100 125 150 175 200
) vs. Battery Voltage (V
MCP73842-8.4V
= 9.4 V
V
DD
(µA)
I
THREF
BAT
).
FIGURE 2-14: Thermistor Reference
Voltage (V
(I
THREF
(V)
THREF
V
).
2.568
2.564
2.560
2.556
2.552
2.548
2.544
2.540
4.5 6.0 7.5 9.0 10.5 12.0
) vs. Thermistor Bias Current
THREF
MCP73841-4.2V
= 100 µA
I
THREF
+85°C
+25°C
-45°C
(V)
V
DD
FIGURE 2-15: Thermistor Reference
Voltage (V
) vs. Supply Voltage (VDD).
THREF
FIGURE 2-17: Thermistor Reference
Voltage (V
(I
THREF
(V)
THREF
V
).
2.568
2.564
2.560
2.556
2.552
2.548
2.544
2.540
8.8 9.2 9.6 10.0 10.4 10.8 11.2 11.6 12.0
) vs. Thermistor Bias Current
THREF
MCP73842-8.4V
= 100 µA
I
THREF
+85°C
+25°C
-45°C
(V)
V
DD
FIGURE 2-18: Thermistor Reference
Voltage (V
) vs. Supply Voltage (VDD).
THREF
DS21823B-page 8 2004 Microchip Technology Inc.
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