MP26060EQ-Z [MPS]
Power Management Circuit;
| 型号： | MP26060EQ-Z |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Management Circuit 光电二极管 |
| 文件： | 总11页 (文件大小：278K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP26060
1A Linear
Li-Ion Battery Charger with Trickle Charge
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP26060 is a linear, high-performance
single cell Li-Ion battery charger. By integrating
high voltage input protection into the charger IC,
the MP26060 can tolerate an input surge up to
24V.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Input Surge Up to 24V
Adapter or USB Input
4.15V Output for Safe Charge
Programmable Charge Current: 85mA to 1A
Proprietary Constant Voltage Auto Recharge
Proprietary Over-Voltage Protection
0.75% VBATT Accuracy
<1µA Battery Reverse Current
90µA Standby Current from VIN
Over Current Protection
AC Adapter Power Good Indicator
Charge Status Indicator
Programmable Soft-Start
Programmable Charge Termination Current
Threshold
Tiny 10-Pin QFN (3mm x 3mm) Package
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge currents (85mA to 1A),
programmable battery full threshold, thermal
protection, battery temperature monitoring,
reverse current blocking, and trickle charge.
The device also provides AC adapter power
good and charge status indications to the
system.
MP26060 is available in a 10-pin 3mm x 3mm
QFN package.
•
APPLICATIONS
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•
•
•
•
Cell Phones
MP3 Players
Smart Phones
PDAs
Digital Cameras
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
3.5V - 24V
To system
+
I
C
1uF
BATT
IN
C
OUT
1uF - 22uF
V
BATT
_
1
10
9
IN
BATT
ISET
2
CHG
MP26060
ACOK
3
8
IBF
4
5
7
6
EN
NC
SS
ON OFF
C
SS
0.1uF
GND
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
ORDERING INFORMATION
Part Number*
Package
Top Marking
Free Air Temperature (TA)
QFN10 (3mm x 3mm)
MP26060EQ
4SYW
–20°C to +85°C
For Tape & Reel, add suffix –Z (e.g. MP26060EQ–Z).
For RoHS compliant packaging, add suffix –LF (e.g. MP26060EQ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
IN
CHG
ACOK
EN
1
2
3
4
5
10 BATT
9
8
7
6
ISET
IBF
SS
NC
GND
EXPOSED PAD
ON BACKSIDE
CONNECT TO
GND PIN
ABSOLUTE MAXIMUM RATINGS (1)
IN to GND ....................................–0.3V to +24V
All Other Pins to GND.................–0.3V to +6.5V
Thermal Resistance (4)
QFN10 (3mm x 3mm) .............50 ...... 12...°C/W
θJA
θJC
(2)
Notes:
Continuous Power Dissipation (TA = +25°C)
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
………………………………………………....2.5W
Junction Temperature...............................140°C
Lead Temperature ....................................260°C
Storage Temperature.............. –65°C to +150°C
Recommended Operating Conditions (3)
Nominal Supply Voltage VIN............3.5V to 6.5V
Operating Junct. Temp (TJ) ..... -20°C to +125°C
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
2
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
ELECTRICAL CHARACTERISTICS
VIN = 5V, VEN = 0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
40
Max
Units
EN = High
ISUPPLY
Supply Current
500
EN = Low, ICHG = 0A
Over
Protection
Input
Voltage
OVP VIN Rise
6.8
7.0
7.2
V
OVP Hysteresis
400
mV
V
Maximum input voltage
DC
Leakage < 500 µA
24
TA = +25°C, IBATT = 0
4.129
4.108
4.15
4.15
4.171
4.192
V
Battery Voltage Regulation
VBATT
TA = –5°C to +75°C, IBATT = 0
V
Battery
Protection
Constant
Regulation
Over-Voltage
Current
IBATT_OVP VBATT = 4.20V
VIN = 5V, VBATT = 3.8V
0
µA
ICHG
450
87
515
100
580
mA
RCHG = 3.3kΩ
VIN = 5V, VBATT = 3.8V,
TJ = 0°C to +120°C,
(5)
Constant Current Variation
113
%ICHG
RCHG = 1.6 kΩ to 8.0 kΩ
VIN = 5V, VBATT = 2.3V
(5)
Trickle Current
5
2.45
10
2.6
100
15
2.75
%ICHG
V
mV
Trickle Threshold Voltage
Trickle Voltage Hysteresis
Battery Full Programming
Range
IBF Accuracy
SS Pin Voltage
Refer to Operation section for
programming IBF
(5)
IBF
10
50
%ICHG
(6)
75
1.19
125
1.27
%IBF
V
CSS = 0.1uF, VBATT = 3.6V
1.23
7.0
6.8
1.8
2.7
7.2
3.2
V
V
Input ACOK Up Range
Input ACOK Low Range
EN Trip Threshold High
EN Trip Threshold Low
CHG , ACOK Sink Current
2.5
V
0.4
1
V
Pin Voltage = 0.4V
8
mA
Battery Reverse Current to
BATT Pin
EN = Low and Input = Floating or
0V
µA
VBATT = 3.8V, IBATT = 300mA,
RCHG = 1.7kΩ
Switch-On Resistance
RON
0.35
120
10
Ω
°C
°C
ms
Soft Thermal Shutdown
Threshold
Soft Thermal Shutdown
Hysteresis
105
10
135
35
From trickle to 90% of full current,
CSS = 0.1µF
Soft-Start Time
20
Notes:
5) ICHG is the target preprogrammed charge current (Die temperature below 110°C).
6) IBF is the target preprogrammed battery full current threshold.
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
PIN FUNCTIONS
Pin #
Name
Description
1
2
IN
Input Supply Pin. IN receives the AC adapter or USB supply voltage.
Open-Drain Charge Status Indicator. This pin is low during charging.
CHG
Open-Drain Input ACOK Indicator. This pin is low if the voltage at the IN pin is between
2.5V and 6.5V.
3
ACOK
Charger IC Enable. An input “Low” signal at this pin or if the pin is floating will enable the
IC.
4
5
6
EN
NC
No connection pin
Exposed Pad
GND
Ground. Connect exposed pad to the GND pin
Soft-Start Timer. Connect this pin to an external capacitor to program the soft-start
CSS
7
8
SS
startup time using the equation: TSS
=
× 20msec .
0.1μF
Charge Status Threshold Program. Connect this pin to an external resistor to program
the charge termination current or battery full charge current.
IBF
Constant Charge Current Program. Connect this pin to an external resistor to program
the charging current in CC Mode.
9
ISET
10
BATT
Charger Output.
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 5V, CIN = 10µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.
Charge Current vs
Battery Voltage
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1.2
1.0
0.8
0.6
0.4
0.2
0
R
=1.69K
CHG
V
BATT
R
=2.87K
CHG
I
BATT
R
=8.66K
CHG
0.0
1.0
2.0
3.0
4.0 5.0
0
20
40 60 80 100 120
CHARGE TIME (MINUTES)
BATTERY VOLTAGE (V)
Battery Voltage vs
Input Voltage
Charge Currents vs
Battery Voltage
4.5
4.3
4.1
3.9
3.7
3.5
1.2
1.0
R
=1.69K
CHG
0.8
0.6
R
=2.87K
CHG
0.4
0.2
0
R
=8.66K
CHG
I
=0.87A
5.7
CHG
4.5
4.8
5.1
5.4
6.0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1
INPUT VOLTAGE (V)
BATTERY VOLTAGE (V)
V
V
IN
IN
5V/div.
5V/div.
V
V
BATT
BATT
2V/div.
2V/div.
V
V
EN
EN
5V/div.
5V/div.
I
I
BATT
BATT
0.5A/div.
0.5A/div.
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
VIN = 5V, CIN = 10µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.
Charge Current vs
Resistance
R
CHG
18
16
14
12
10
8
700
660
620
580
540
500
V
=3.7V
BAT
6
V
=3.8V
BAT
4
2
0
0
200 400 600 800 1000
CHARGE CURRENT (mA)
4.3 4.4 4.5 4.6 4.7 4.8 4.9
INPUT VOLTAGE (V)
5
Reverse Current vs
Battery Voltage
900
880
860
840
820
800
0.02
0.01
V
=0V
IN
0
2.5
2.9
3.3
3.7
4.1
4.5
-50 -30 -10 10 30 50 70 90
BATTERY VOLTAGE (V)
Battery Voltage vs
Temperature
4.25
4.21
4.17
4.13
4.09
4.05
-50 -30 -10 10 30 50 70 90
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
BLOCK DIAGRAM
V
IN
IN
C
IN
1
BATT
CHG
I
BATT
10
2
+
V
C
BATT
OUT
SS
_
7
9
C
SS
BATTERY
CHARGE
CONTROL
ISET
R
CHG
ACOK
3
IBF
8
R
BF
4
6
EN
GND
OFF ON
Figure 1—Functional Block Diagram
OPERATION
Input Voltage Range
Charge Cycle (Mode Change: Trickle -> CC-> CV)
Figure 2 below shows the typical charging
profile for the MP26060. Figure 3 shows the
typical charging procedure. For a fully depleted
battery with a terminal voltage lower than 2.6V,
the MP26060 will start with the trickle charge
(preconditioning) at 10% of the programmed full
charge current. After the battery voltage
reaches 2.6V, the charger begins charging at
the constant current of the programmed value
(ICHG). This is referred to as Constant Current
(CC) mode. Once the battery voltage reaches
4.15V, the charger will operate in the constant
voltage (CV) mode until the battery is fully
charged. The charge current drops during CV
mode, and the battery full indication is set when
the charge current in the CV mode is reduced
to the programmed full battery current (IBF).
The MP26060 has built-in input voltage surge
protection up to +24V. The charger IC will be
automatically disabled when the input voltage is
lower than 2.5V or higher than 6.5V. The open-
drain pin ACOK is used to indicate an input
power good condition (i.e. 2.5V<VIN<6.5V). If
the input voltage is lower than the battery
voltage, the IC is also disabled to prevent the
battery from draining.
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
7
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
I
BATT
CC
Charging
RCHG (kΩ)
2.43
ICHG (mA)
700
I
CHG
CV
Charging
2.80
3.4
4.22
5.6
600
500
400
300
I
BF
Charging
Complete
Trickle
Charging
10% of I
CHG
V
BATT
Table 1—RCHG and ICHG Relationship
2.6V
4.15V
Figure 2—Typical Charging Profile
CHG
V
I
BATT
BATT
Soft-Start
Time
V
BATT
4.15V
I
CHG
90% of I
CHG
2.6V
I
BATT
10% of I
(I
CHG BF
)
CHG
Charge
Start
Trickle
Charging
CC
Mode
CV
Mode
Charge
End
Figure 3—Typical Charging Procedure
CHG
Battery Over-Voltage Protection and
Automatic Recharge
Figure 4—Charge Current vs 1/RCHG
Resistance
At any time when VBATT is 50mV higher than the
trimmed charge target, the MP26060 reduces
its charge current to 0µA. This ensures the
safety of the battery. Also, the CV control loop
always monitors the battery voltage such that it
will automatically recharge the battery when it is
depleted below the target level.
The recommended resistance for programming
the charge current is 2.3kΩ<RCHG<11kΩ. The
battery full charge current threshold (IBF) is
programmed by connecting a resistor RBF from
the IBF pin to GND:
1A×1.7kΩ
IBF
=
Programming of Charge Current and Battery
Full Current
RBF
The charge current (ICHG) is set by a resistor
(RCHG) connecting from the ISET pin to GND.
See Table 1 and Figure 4. The relationship of
the charge current and the programming
resistance is established by:
Where 2RCHG<RBF<10RCHG. 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 a floating pin.
1A×1.7kΩ
ICHG
=
RCHG
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
8
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
Thermal Protection
Charge Status Indicator (CHG)
The MP26060 has proprietary thermal
protection to prevent the IC from overheating.
When in thermal protection mode, the charge
current becomes a saw-tooth waveform instead
of a DC current. The average current of the
saw-tooth waveform will be lower than the
programmed DC charge current to prevent the
IC from overheating. The frequency and
amplitude of the saw-tooth current waveform
can be altered by changing the capacitance
value connected to the SS pin. Operating in
thermal protection mode will slow down the
charging process. Lowering the input voltage
and enhancing thermal dissipation to the
environment can effectively prevent the IC from
going into thermal protection mode.
The MP26060 has an integrated charge status
pin that remains low while the battery is
charging. Once the charge current has reduced
to the battery full charge current threshold (IBF),
the CHG pin will become high impedance.
The ACOK and CHG can be used to drive
LEDs ( Figure 1) or to interface with the system.
When interfacing with the system, glitches may
occur on the power supply input (IN) when the
AC-power adapter is plugged in and out. It is
desirable to blank the glitches so that the
system can properly operate with AC power
adaptor. A simple Solution is to add the RC
filter (C5 and C6)on the pin ACOK / CHG as
shown in Figure 5. The size of C5 and C6
depends on the width of the glitch and the rise
time of the interface.
Vcc
R1
R2
VBAT
1
10
VIN
IN
BATT
C1
C2
C6
C5
C4
2
3
9
CHG
ISET
GND
MP26060
CHG
8
7
6
ACOK
ACOK
IBF
SS
4
5
EN
NC
EN
R6
R5
GND
C3
Figure 5—Filtered Charge Status & Input Power Good Interface
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
9
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
APPLICATION
Flow Chart of Operation
Power-On Reset (POR) feature can be applied
to the MP26060 to ensure that the device starts
operating in a known state. The flow chart in
Figure 5 describes the conditions and operation
modes of the MP26060. CVC and CCC stand
for “constant voltage charge” and “constant
current charge”, respectively.
Figure 6—Flow Chart of Operation
MP26060 Rev.0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
10
MP26060 – 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
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.
MP26060 Rev. 0.9
1/14/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
11
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