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.