MP26058DQ-LF [MPS]
Power Supply Support Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, ROHS COMPLIANT, MO-229VEED-5, QFN-10;
| 型号： | MP26058DQ-LF |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | Power Supply Support Circuit, Adjustable, 1 Channel, PDSO10, 3 X 3 MM, ROHS COMPLIANT, MO-229VEED-5, QFN-10 光电二极管 |
| 文件： | 总10页 (文件大小：485K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MP26058
28V, 1A Li + Linear Battery Charger
with Timer and LDO Mode
The Future of Analog IC Technology
DESCRIPTION
FEATURES
•
Complete Solution for Charging Single-Cell
Lion-Ion Battery
Input Surge Up to 28V
Wide input operating range 2.8V – 7V
Adapter or USB Input
Programmable Charge Current: 200mA to 1A
Programmable timer
7V Input Over Voltage Protection
0.75% VBATT Accuracy over Temperature
<1µA Battery Reverse Current
125µA Standby Current from VIN
Battery Temperature Monitoring
Automatic die temperature limiting
Fault and Charge Status Indicators
Soft-Start to limit inrush current
Tiny 3mm x 3mm QFN Package
The MP26058 is a linear, high performance
single cell Li-Ion or Li-Polymer battery charger.
By integrating high voltage input protection into
the charger IC, the MP26058 can tolerate an
input surge up to 28V. The LDO mode makes
the MP26058 suitable for power up the system
when battery is not present.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge currents (200mA to 1A),
current blocking. The other features include the
programmable battery full indication threshold
and the LDO mode operation which keeps
charging the battery after battery-full is asserted
and stay in full-state as long as the valid input is
maintained. MP26058 can provide load to the
system if no battery is connected.
APPLICATIONS
For guaranteed safe operation, the MP26058
limits the die temperature to a preset value
when the device is heated up due to limited
PCB space. Other safety features are battery
temperature monitoring, and programmable
timer to prevent prolonged charging a dead
battery.
•
•
•
•
•
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.
MP26058 is available in 10-pin 3mm x 3mm
DFN packages.
TYPICAL APPLICATION
3.5V - 6.5V
1
10
IN
BATT
9
8
2
NTC
ISET
ACOK
3
CHG
4
5
7
6
TMR
GND
IBF
SHDN
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
1
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
PACKAGE REFERENCE
ABSOLUTE MAXIMUM RATINGS (1)
IN to GND....................................–0.3V to +28V
All Other Pins to GND.................–0.3V to +6.5V
TOP VIEW
ACOK & CHG Maximum Sink Current…20mA
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
IN
ACOK
CHG
TMR
1
2
3
4
5
10 BATT
9
8
7
6
NTC
ISET
IBF
GND
SHDN
EXPOSED PAD
ON BACKSIDE
Thermal Resistance (3)
θJA
θJC
3x3 QFN10 .............................50...... 12... °C/W
Part Number*
Package
Temperature
QFN10
(3mm x 3mm)
Notes:
MP26058DQ
–40°C to +85°C
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
For Tape & Reel, add suffix –Z (eg. MP26058DQ–Z)
For RoHS compliant packaging, add suffix –LF
(eg. MP26058DQ–LF–Z)
*
3) Measured on JEDEC51-7 4 layer board..
ELECTRICAL CHARACTERISTICS
VIN = 5V, VSHDN =0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
30
Max
Units
Supply Current
ISUPPLY SHDN = High
µA
SHDN = Low, ICHG = 0A
500
4.20
Battery Voltage Regulation
VBATT T = –5°C to +75°C, IBATT = 0A
4.16
448
4.24
582
V
Constant Current
Regulation
VIN = 5V, VBATT = 3.8V
RCHG = 3.3kΩ
ICHG
515
mA
VIN = 5V, VBATT = 3.8V,
TJ = 0°C to +120°C,
%ICHG
(4)
Constant Current Variation
87
10
100
113
50
R
CHG = 1.6kΩ to 8.0kΩ
Battery Full Programming
Range
Refer to Operation section for
programming IBF
%ICHG
(4)
IBF
IBF Accuracy
75
125
7.3
%IBF(5)
Input OVP
VIN Rising
VIN Rising
6.7
7
V
mV
V
OVP Hysteresis
Input UVLO
400
2.2
100
7
1.6
6.7
2.8
7.2
UVLO Hysteresis
Input ACOK Up Range
mV
V
ACOK & CHG Over
Voltage Clamp
VZ
7.6
V
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
2
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
ELECTRICAL CHARACTERISTICS (continued)
VIN = 5V, VSHDN =0V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
SHDN Trip Threshold High
SHDN Trip Threshold Low
2.6
V
V
0.4
CHG ACOK
,
Sink
Pin Voltage = 0.2V
5
mA
Current
Battery Reverse Current to
BATT Pin
SHDN = Low and Input = Floating
or 0V
1
µA
V
VIN-
VBATT = 3.8V, RCHG = 6kΩ. Current
VBATT drop 10%
Dropout Voltage
0.25
120
Soft Thermal Shutdown
Threshold
105
135
°C
Soft Thermal Shutdown
Hysteresis
10
20
°C
µs
Internal Soft-Start Time
R_NTC at 0°C
From 10% to 90% of full current
TH11-
4H104F
Note: R_NTC is 100k at 25°C
Note: R_NTC is 100k at 25°C
376.6
kΩ
TH11-
4H104F
R_NTC at 50°C
32.3
kΩ
Oscillation Freq
CTMR = 2.2uF
VTMR=0.1V
VTMR=1.5V
5
Hz
µA
µA
TMR Pin Source Current
ITMR1
ITMR2
18
18
20
20
22
22
TMR Pin Sink Current
Notes:
4) ICHG is the target preprogrammed charge current (Die temperature below 110°C).
5) IBF is the target preprogrammed battery full current threshold.
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
3
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
PIN FUNCTIONS
Pin #
Name Description
1
IN
Input Supply Pin. IN receives the AC adapter or USB supply voltage.
Open-Drain Charge Indicator. This pin is low during charging, is High after battery full or
termination, is toggling the battery is fault.
3
2
4
CHG
Open-Drain Fault Status Indicator.
ACOK
TMR
Oscillator Period Timer. Connect a timing capacitor between this pin and GND to set the
oscillator period. T(sec)=22000 * CTMR (µF). Short this pin to ground to disable timer.
GND,
Exposed
Pad
The exposed pad and GND pin must be connected to the same ground plane.
5
6
8
SHDN Charger IC Enable. An input “Low” signal at this pin or if the pin is floating will enable the IC.
Constant Charge Current Program pin. Connect this pin to an external resistor to program the
ISET
charging current in CC Mode.
Charge Status Threshold Program. Connect this pin to an external resistor to program the
charge termination current or battery full indication threshold.
7
IBF
Negative Temperature Coefficient (NTC) Thermistor Pin. Connect a 500kΩ resistor from this
pin to the IN pin and a 100kΩ NTC resistor (within the battery pack) from this pin to ground. If
NTC function is not used, replace NTC resistor with a regular 100kΩ resistor from this pin to
9
NTC
ground. Do not leave this pin floating.
10
BATT Charger Output.
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
4
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
TYPICAL PERFORMANCE CHARACTERISTICS
CIN=4.7µF, COUT=2.2µF, VIN=5V, TA=25ºC, unless otherwise noted.
Constant Current Charge
vs. Input Voltage
VBAT=3.8V
Battery Charge Curve
Charge Current vs.
Battery Voltage
900
800
700
600
500
400
300
200
100
0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1000
800
600
400
200
0
1200
1000
800
600
400
200
0
V
Thermal Protection
BAT
I
=0.8A
CHG
I
I
=0.8A
=0.5A
CHG
I
CHG
I
=0.5A
CHG
CHG
I
=0.2A
CHG
I
=0.2A
CHG
V
STATUS
0
30
60
90 120 150 180
1.0
1.8
2.6
3.4
4.2
5.0
4.0 4.5 5.0 5.5 6.0 6.5 7.0
INPUT VOLTAGE (V)
TIME (MIN)
BATTERY VOLTAGE (V)
Constant Voltage Charge
R
I
Resistance vs.
CHG
CHG
Thermal Protection
(VCE=VIN-VBAT
)
1200
1000
800
4.22
4.21
4.20
4.19
4.18
4.17
0.6
0.5
0.4
0.3
0.2
0.1
0
I
=0.2A
CHG
I
=1A
CHG
600
I
=0.5A
I
CHG
=0.8A
CHG
400
200
0
200 400 600 800 1000
CHARGE CURRENT (mA)
1
2
3
4
5
6
0
200 400 600 800 1000
ISET (mA)
VCE (V)
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
TYPICAL PERFORMANCE CHARACTERISTICS
CIN=4.7µF, COUT=2.2µF, VIN=5V, Ta=25ºC, unless otherwise noted. (continued)
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
6
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
BLOCK DIAGRAM
V
IN
IN
C
IN
1
R1
NTC
9
4
BATT
CHG
I
R
BATT
NTC
10
3
+
V
C
BATT
OUT
TMR
ISET
IBF
_
8.2V
8.2V
C
TMR
BATTERY
CHARGE
CONTROL
8
7
R
R
CHG
ACOK
2
BF
5
6
GND
SHDN
ON
OFF
Figure 1—Functional Block Diagram
OPERATION
Input Voltage Range
if the battery is still not reaching IBF condition,
the on-chip timer will terminate the charger to
prevent charging the dead battery for excessive
long time and the fault condition will be flagged
The MP26058 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 2.2V or higher than 7.0V.
by flashing the CHG LED.
For MP26058, the open-drain pin ACOK is
used to indicate an input power good condition
(i.e. 2.8V<VIN<7.0V). If the input voltage is lower
than the battery voltage, the IC is also disabled
to prevent the battery from draining.
I
BAT
C.C
Charging
C.V
Charging
Charge Cycle (Mode Change: CC-> LDO)
I
BF
I
BF
Figure 2 below shows the typical charging
profile for the MP26058. It 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
4.2V, the charger will operate in the LDO mode
to keep the battery is fully charged. The charge
current drops during LDO mode, and the
battery full indication is set when the charge
current reduced to the preset value based on
RBF. After 262144 cycles of continuous charging,
V
BAT
4.2V
Figure 2—MP26058 Typical Charging Profile
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
7
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
Programming of Charge Current and Battery
Timer Operation
Full Current
The TMR pin is used to set the internal
The charge current (ICHG) is set by a resistor
(RCHG) 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.
µF
CTMR
oscillator frequency: FOSC = 11Hz×
The on-chip timer will start count down after
initial power-up or every time being enabled.
This timer will limit the max charge time when
battery is short to ground to 16384 internal
oscillating cycles, or if the total charge time
exceeds 262144 cycles and the battery full has
not been qualified, then it will terminate the
Table 1—RCHG and ICHG Relationship
RCHG (kΩ)
1.65
1.82
2.05
2.32
2.74
3.3
ICHG (mA)
1000
900
charger and a fault will be set by flashing CHG
LED at the rate of half the internal oscillation
frequency.. After fault reporting, the charger can
be re-initiated only by recycling the power
supply or SHDN\ signal. The timer function can
be disabled by shorting TMR pin to ground.
800
700
600
500
4.12
5.6
400
300
Negative Thermal Coefficient (NTC)
Thermistor
8.66
16.9
200
100
The MP26058 has a built-in NTC resistance
window comparator. If configured as the typical
application circuit as indicated in Figure 1, the
MP26058 will cease charging if RNTC<32.3kΩ or
RNTC>376.6kΩ. This represents a valid charging
temperature range of 0°C to 50°C for the
TH11-4H104F NTC resistor.
Charge Current vs
1/R Resistance
PGM
1000
900
800
700
600
500
400
300
200
Thermal Protection
The MP26058 has proprietary thermal
protection to prevent the IC from overheating.
When in thermal protection mode, the charge
current will reduce to maintain the safe junction
temperature. 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.
0
0.1 0.2 0.3 0.4 0.5 0.6
0.7
Figure 3—Charge Current vs 1/RCHG
Resistance
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
=
RBF
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.
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
8
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
Figure 4 describes the conditions and operation
modes of the MP26058. CVC and CCC stand for
“constant voltage charge” and “constant current
charge”, respectively.
APPLICATION
Flow Chart of Operation
Power-On Reset (POR) feature can be applied to
the MP26058 to ensure that the device starts
operating in a known state. The flow chart in
Figure 4 — Flow Chart Operation
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
9
MP26058-28V, 1A LI + LINEAR BATTERY CHARGER WITH TIMER AND LDO MODE
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.
MP26058 Rev. 0.91
1/25/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
10
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