MP2631DQ-LF [MPS]
Power Supply Management Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, ROHS COMPLIANT, MO-229VEED-5, QFN-10;
| 型号： | MP2631DQ-LF |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Management Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, ROHS COMPLIANT, MO-229VEED-5, QFN-10 光电二极管 |
| 文件： | 总9页 (文件大小：535K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP2631
28V, 1A, Li-lon, Linear Battery Charger
with 10mA High Voltage LDO
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP2631 is a linear, high performance
single cell Li-Ion or Li-Polymer battery charger
with 10mA LDO. By integrating high voltage
input protection into the charger IC, the
MP2631 can tolerate an input surge up to 28V.
•
Complete Solution for Charging Single-Cell
Li-Ion Battery
Input Surge Protection Up to 28V
5V LDO output
3V to 7V Input Operating Range
Programmable Charge Current: 200mA to 1A
Termination and auto-recharge
0.75% VBATT Accuracy over Temperature
<1µA Battery Reverse Current
Automatic die temperature limiting
Fault and Charge Status Indicators
External Soft-Start to Control Inrush Current
3mm x 3mm QFN Package
•
•
•
•
•
•
•
•
•
•
•
The internal 5V LDO can be used as a system
watchdog supply to monitor charge status. The
LDO is ON when the input voltage is greater
than 3V and less than 7V, and remains ON
when the MP2631 is in SHDN mode. When
input is higher than 7.0V, the LDO output will be
cut off from the input. When input is lower than
5V, the LDO will work in the dropout region.
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge current (200mA to 1A),
auto-recharge and trickle charge. MP2631
provides ACOK and charge status indications to
the system. The OVP circuitry will automatically
disconnect both charger and LDO from input
when VIN exceeds 7V.
APPLICATIONS
•
•
•
•
•
Cell Phones
Digital Cameras
Smart Phones
PDAs
MP3 Players
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
For guaranteed safe operation, the MP2631
limits the die temperature to a preset value
when the device is heated up due to limited
PCB space. MP2631 is available in 10-pin 3mm
x 3mm QFN package.
TYPICAL APPLICATION CIRCUIT
U1
5-6.5V
1
10
VIN
LDO
BAT
IN
LDO
BAT
C1
R2
1K
R1
1K
MP2631DQ
GND
2
3
35V
9
8
SS
LED2
Red
C6
LED1
Green
ACOK
ACK
ISET
C5
NS
GND
7
5
4
6
R3
CHG
NC
CHG
1.96K 3.09K 7.68K
C3
NS
1%
1%
1%
SHDN
GND
SHDN
JP1
JP2
JP3
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
1
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH 10MA HIGH VOLTAGE LDO
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS (1)
IN to GND...................................... –0.3V to 28V
All Other Pins to GND.................–0.3V to +6.5V
Junction Temperature...............................140°C
Lead Temperature....................................260°C
Storage Temperature ..............–65°C to +150°C
Recommended Operating Conditions (2)
Nominal Supply Voltage VIN............ 3.5V to 5.5V
Operating Temperature .............–40°C to +85°C
TOP VIEW
IN
SS/NC
ACOK
CHG
1
2
3
4
5
10 LDO
9
8
7
6
BATT
ISET
NC
GND
SHDN
Thermal Resistance (3)
3x3 QFN10 .............................50...... 12... °C/W
θJA
θJC
EXPOSED PAD
ON BACKSIDE
Part Number*
Package
Temperature
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
QFN10
(3mm x 3mm)
MP2631DQ
–40°C to +85°C
3) Measured on approximately 1” square of 1 oz copper.
For Tape & Reel, add suffix –Z (eg. MP2631DQ–Z)
For RoHS compliant packaging, add suffix –LF
(eg. MP2631DQ–LF–Z)
*
ELECTRICAL CHARACTERISTICS
VIN = 5.2V, VEN = 0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
SHDN= Low, VBATT=4.25V,
ILDO = 0A, VIN ≥ 5.2V
VBATT T = –5°C to +75°C, IBATT = 0
Min
Typ
Max
Units
Input Quiescent Current
ISUPPLY
950
µA
Battery Voltage Regulation
LDO OUT
4.16
4.85
4.85
4.20
5.0
4.24
5.15
V
V
VOUT
Iout = 0 - 10mA, Vin = 5.0 – 6.5 V
I=2mA, Vin=5.0V
VOUT_MIN
Min LDO Output Voltage
LDO Load Regulation
LDO Short Current Limit
V
Load < 10mA
0.005
80
V/mA
mA
OVP Threshold
Input rising
6.7
7.0
7.3
V
VBATT = 3.8V
Constant Current
Regulation
ICHG
475
530
585
mA
R
CHG = 3.3k
V
BATT = 3.8V,
(4)
Constant Current Variation
87
100
113
%ICHG
TJ = 0°C to +120°C,
(4)
Trickle Current
VBATT = 2.3V
5
10
2.6
100
10
15
%ICHG
V
Trickle Threshold Voltage
Trickle Voltage Hysteresis
IBF Threshold
VBATT rising
2.45
2.75
mV
IBF
In CV mode
5
15
%ICHG
V
OVP Threshold
OVP Hysteresis
UVLO
OVP Vin rising
6.7
7
7.3
400
2.1
mV
V
Vin rising
1.6
2.5
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
2
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH 10MA HIGH VOLTAGE LDO
ELECTRICAL CHARACTERISTICS (continued)
VIN = 5.2V, VEN = 0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
1.5
4
Typ
Max
Units
UVLO Hysteresis
150
mV
SHDN Trip Threshold High
SHDN Trip Threshold Low
V
V
0.4
Pin Voltage = 0.2V
mA
CHG , ACOK Sink Current
Battery Reverse Current to
BATT Pin
SHDN = Low and Input = Floating
or 0V
1
µA
Soft Thermal Shutdown
Threshold
Tlim
105
3.9
120
10
135
°C
°C
Soft Thermal Shutdown
Hysteresis
From trickle to 90% of full current,
(Css absent)
Soft-Start Time
300
us
Recharge Voltage
Threshold
VRECHARGE
VBATT falling from 4.2V
4.0
4.1
V
Recharge Voltage
Hysteresis
100
mV
Notes:
4) ICHG is the target preprogrammed charge current (Die temperature below 110°C).
5) IBF is the target preprogrammed battery full current threshold.
PIN FUNCTIONS
Pin #
Name
Description
Input Supply Pin. IN receives the AC adapter or USB supply voltage.
1
IN
Soft Start Pin. If it is left open, internal fixed SS is operated and the charger will not
charge a battery when its initial voltage is higher than the recharge threshold (4.0V).
2
3
4
SS/NC
Open-Drain Input Fault Indicator. This pin is low when 2.1V < Vin < 7.0V
ACOK
CHG
Open-Drain Charge Indicator. This pin is low during charging, is High after battery full
or termination.
GND
Exposed Pad
5
Ground. Exposed pad and GND pin must be connected to same ground plane
Used for Charger Termination. An input “Low” signal at this pin or if the pin floating will
enable the charger.
6
7
8
SHDN
NC
No Connection
Constant Charge Current Program pin. Connect this pin to an external resistor to
program the charging current in CC Mode.
ISET
9
BATT
LDO
Charger Output
LDO output
10
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
3
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH 10MA HIGH VOLTAGE LDO
TYPICAL PERFORMANCE CHARACTERISTICS
C1=4.7uF, C2=0.1uF, C4=2.2uF, VIN=5V, TA=25ºC, unless otherwise noted.
Battery Charge Curve
Charge Current vs
Battery Voltage
Charge Current vs
Battery Voltage
900
800
700
600
500
400
300
200
100
0
1200
1000
800
600
400
200
0
1200
1000
800
600
400
200
0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
ICHG
=0.8A
=1A
ICHG=1A
VBAT
ICHG
Thermal Protection
ICHG
=
0.8A
ICHG=0.5A
ICHG
=0.5A
ICHG=0.2A
ICHG=0.2A
ICHG
0
1.0
2.0
3.0
4.0
5.0
2.7
3.0
3.3
3.6
3.9
4.2
0
20 40 60 80 100 120 140
CHARGE TIME (Min)
VBAT (V)
VBAT (V)
Charge Current vs
Input Voltage
1/RSET vs.
ISET
Trickle Charge Curve
1200
0.7
120
VBAT=4V
0.6
0.5
0.4
0.3
0.2
0.1
0
ICHG
=100mA
1000
800
600
400
200
0
100
80
60
40
20
0
ICHG
=
80mA
50mA
VBAT=4.1V
ICHG
=
=
ICHG
20mA
2.0
VBAT=3.8V
4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0
IN (V)
200 300 400 500 600 700 800 900 1000
0
0.5
1.0
1.5
2.5
V
ISET (mA)
VBAT (V)
LDO Load Regulation
LDO Voltage Dropout
50
5.10
45
40
35
30
25
20
15
10
5
5.05
5.00
4.95
4.90
4.85
VIN=5V
8 10
4.80
0
0
2
4
6
0
2
4
6
8
10
LOAD CURRENT (mA)
LOAD CURRENT (mA)
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
4
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH 10MA HIGH VOLTAGE LDO
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
C1=4.7uF, C2=0.1uF, C4=2.2uF, VIN=5V, TA=25ºC, unless otherwise noted.
1400
1200
1000
800
5.2
5.0
4.8
4.6
4.4
4.2
600
400
200
4.5
4.9
5.3
5.7
6.1
6.5
1.0 1.5 2.0 2.5 3.0 3.5 4.0
Current Charge vs.
Temperature
V
vs.
BAT
Temperature
4.10
4.06
4.02
3.98
3.94
3.90
570
560
550
540
530
520
-40
-10
20
50
80
110
-40
-10
20
50
80
110
V
V
V
IN
IN
IN
5V/div.
CHG
5V/div.
5V/div.
CHG
5V/div.
5V/div.
CHG
5V/div.
V
V
V
V
V
V
BAT
BAT
OUT
5V/div.
5V/div.
5V/div.
I
I
I
IN
IN
IN
0.2A/div.
0.2A/div.
10mA/div.
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
5
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH 10MA HIGH VOLTAGE LDO
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
C1=4.7uF, C2=0.1uF, C4=2.2uF, VIN=5V, TA=25ºC, unless otherwise noted.
Recovery Input Voltage
(LDO)
VIN=6.6V, VO=5V, IO=5mA
V
V
IN
V
IN
IN
5V/div.
SHDN
5V/div.
5V/div.
SHDN
5V/div.
5V/div.
CHG
5V/div.
V
V
V
V
V
V
BAT
BAT
OUT
5V/div.
5V/div.
5V/div.
I
I
I
CHG
CHG
IN
0.5A/div.
0.5A/div.
10mA/div.
200ms/div.
100ms/div.
Power Ramp Up vs.
Power Ramp Down vs.
Battery Charge
Battery Charge
VBAT=4.1V, CSS=0.1uF
VBAT=4.1V, CSS=0.1uF
V
V
IN
IN
5V/div.
CHG
5V/div.
5V/div.
CHG
5V/div.
V
V
V
V
BAT
BAT
5V/div.
5V/div.
I
I
CHG
CHG
0.2A/div.
0.2A/div.
10ms/div.
10ms/div.
V
V
IN
IN
5V/div.
CHG
5V/div.
5V/div.
CHG
5V/div.
V
V
V
V
BAT
BAT
5V/div.
5V/div.
I
I
CHG
CHG
0.5A/div.
0.5A/div.
10ms/div.
10ms/div.
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
6
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH 10MA HIGH VOLTAGE LDO
BLOCK DIAGRAM
LDO
RS
V
IN
IN
RS
SS/NC
ACOK
CHG
BATTERY
CHARGE
CONTROL
I
Battery
ISET
RPGM
SHDN
GND
Figure 1—Functional Block Diagram
Charge Cycle (Mode Change: Trickle->CC-> CV)
OPERATION
Figure 2 below shows the typical charging
profile for the MP2631. It begins charging at the
constant current of the programmed value
(ICHG). This is referred to as Constant Current
(CC) mode. For a deeply discharged battery, it
will start trickle at 10% of the programmed
charge current until battery voltage reaches
2.6V. Once the battery voltage reaches 4.2V,
the charger will operate in the constant voltage
(CV) charge mode. The charge current drops
during CV mode, and the battery full indication
is set when the charge current reduces to the
battery full value (IBF) at 10% of the nominal
charge current.
Input Voltage Range
The MP2631 has built-in input voltage surge
protection as high as +28V. The charger IC will
be automatically disabled when the input
voltage is lower than 2.1V or higher than 7.0V.
For MP2631, the open-drain pin ACOK is
used to indicate an input power good condition
(i.e. 3.5V<VIN<6.5V). If the input voltage is lower
than the battery voltage, the charge function is
also disabled to prevent the battery from
draining.
IBATT
CC
Charging
ICHG
CV
Charging
Trickle
Charging
Charging
Complete
10% of ICHG
VBATT
2.6V
4.2V
Figure 2—MP2631 Typical Charging Profile
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
7
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH A 10MA HIGH VOLTAGE LDO
Programming of Charge Current and Battery
LDO Operation
Full Current
The on-chip current limited LDO will regulate its
output at 5V for the input voltage from 5.1V to
6.5V. When VIN is below 5.1V, it will work in the
dropout mode. LDO is always ON no matter what
state of SHDN is, unless OVP is reached. It can
handle a maximum load of 10mA. A 0.1uF -1uF
cap at the output is recommended.
The charge current (ICHG) is set by a resistor
(RPGM) connecting from the ISET pin to GND. The
relationship of the charge current and the
programming resistance is established by the
following table and graph.
Table 1—RPGM and ICHG Relationship
RPGM (kΩ)
1.55
1.72
1.94
2.21
2.58
3.1
ICHG (mA)
1000
900
800
700
600
500
3.87
5.16
7.75
15.5
400
300
200
100
The open-drain pin CHG is used to indicate
charging status. When the battery full condition is
reached or any other condition prevents the
charger from charging, CHG will become floating
and the charge function is terminated. The
charger will begin recharging when the battery
voltage is reduced to 4.0V due to any kind of
leakage.
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
8
MP2631–28V, 1A LINEAR LI-ION BATTERY CHARGER WITH A 10MA HIGH VOLTAGE LDO
PACKAGE INFORMATION
QFN10 (3mm x 3mm)
2.90
3.10
0.30
0.50
1.45
1.75
PIN 1 ID
SEE DETAIL A
PIN 1 ID
MARKING
0.18
10
1
5
0.30
2.25
2.55
2.90
3.10
PIN 1 ID
INDEX AREA
0.50
BSC
6
TOP VIEW
BOTTOM VIEW
PIN 1 ID OPTION A
R0.20 TYP.
PIN 1 ID OPTION B
R0.20 TYP.
0.80
1.00
0.20 REF
0.00
0.05
SIDE VIEW
DETAIL A
NOTE:
2.90
1.70
1) ALL DIMENSIONS ARE IN MILLIMETERS.
0.70
0.25
2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX.
4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VEED-5.
5) DRAWING IS NOT TO SCALE.
2.50
0.50
RECOMMENDED LAND PATTERN
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
MP2631 Rev.0.9
9/15/2008
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
9
相关型号：
MP2631DQ-Z
Power Supply Management Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, MO-229VEED-5, QFN-10
MPS
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