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MP2602DQ-LF-Z

P1-P3P4-P6P7-P9P10-P10
MP2602
28V, 1A Linear
Li-Ion Battery Charger with Trickle Charge
MP2602 Rev.1.3 www.MonolithicPower.com 1
1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2602 is a linear, high-performance
single cell Li-Ion battery charger. By integrating
high voltage input protection into the charger IC,
the MP2602 can tolerate an input surge up to
28V.
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.
MP2602 is available in 10-pin 3mm x 3mm QFN
packages.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV2602DQ-00B 2”X x 1.9”Y x 0.6”Z
FEATURES
• Input Surge Up to 28V
• Adapter or USB Input
• Programmable Charge Current: 85mA to 1A
• Proprietary Constant Voltage Auto Recharge
• Proprietary Over-Voltage Protection
• 0.75% V
BATT
Accuracy
• <1µA Battery Reverse Current
• 90µA Standby Current from V
IN
• Battery Temperature Monitoring
• Over Current Protection
• AC Adapter Power Good Indicator
• Charge Status Indicator
• Programmable Soft-Start
• Programmable Charge Termination Current
Threshold
• Tiny 3mm x 3mm QFN Package
APPLICATIONS
• 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
MP2602
BATT
ISET
IBF
SS
GND
10
9
8
7
6
IN
CHG
ACOK
EN
NTC
1
2
3
4
5
To system
I
BATT
V
BATT
+
_
3.5V - 28V
OFFON
MP2602 – 28V, 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
MP2602 Rev.1.3 www.MonolithicPower.com 2
1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
PACKAGE REFERENCE
Part Number* Package Temperature
MP2602DQ
QFN10
(3mm x 3mm)
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP2602DQ–Z)
For RoHS compliant packaging, add suffix –LF
(eg. MP2602DQ–LF–Z)
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 V
IN
............ 3.5V to 5.5V
Operating Temperature .............–40°C to +85°C
Thermal Resistance
(3)
θ
JA
θ
JC
3x3 QFN10 ............................. 50 ...... 12... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
V
IN
= 5V, V
EN
= 0V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
EN = High
40
Supply Current I
SUPPLY
EN = Low, I
CHG
= 0A
500
µA
Battery Voltage Regulation V
BATT
T
A
= –5°C to +75°C, I
BATT
= 0
4.158
4.20
4.242
V
Battery Over-Voltage
Protection
I
BATT_OVP
V
BATT
= 4.25V 0 µA
Constant Current Regulation I
CHG
V
IN
= 5V, V
BATT
= 3.8V
R
CHG
= 3.3kΩ
Ω
450 515 580 mA
Constant Current Variation
V
IN
= 5V, V
BATT
= 3.8V,
T
J
= 0°C to +120°C,
R
CHG
= 1.6 kΩ to 8.0 kΩ
Ω
Ω
87 100 113 %I
CHG
(4)
Trickle Current V
IN
= 5V, V
BATT
= 2.3V 5 10 15 %I
CHG
(4)
Trickle Threshold Voltage 2.45 2.6 2.75 V
Trickle Voltage Hysteresis 100 mV
Battery Full Programming
Range
I
BF
Refer to Operation section for
programming I
BF
10 50 %I
CHG
(4)
IBF Accuracy 75 125 %I
BF
(5)
SS Pin Voltage C
SS
= 0.1uF, V
BATT
= 3.6V 1.19 1.23 1.27 V
Input ACOK Up Range
5.8 6.0 6.2 V
Input ACOK Low Range
1.8 2.5 3.2 V
Input Over Voltage Protection OVP V
IN
Rising 5.8 6.0 6.2 V
TOP VIEW
IN
CHG
ACOK
EN
NTC
1
2
3
4
5
BATT
ISET
IBF
SS
GND
10
9
8
7
6
EXPOSED PAD
ON BACKSIDE
MP2602 – 28V, 1A LINEAR LI-ION BATTERY CHARGER WITH TRICKLE CHARGE
MP2602 Rev.1.3 www.MonolithicPower.com 3
1/25/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS (continued)
V
IN
= 5V, V
EN
= 0V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
OVP Hysteresis 400 mV
EN Trip Threshold High
2.5 V
EN Trip Threshold Low
0.4 V
CHG
,
ACOK
Sink Current
Pin Voltage = 0.4V 8 mA
Battery Reverse Current to
BATT Pin
EN = Low and Input =
Floating or 0V
1 µA
Switch-On Resistance R
ON
V
BATT
= 3.8V, I
BATT
= 300mA,
R
CHG
= 1.7kΩ
0.35 Ω
Soft Thermal Shutdown
Threshold
105 120 135 °C
Soft Thermal Shutdown
Hysteresis
10 °C
Soft-Start Time
From trickle to 90% of full
current, C
SS
= 0.1µF
10 20 35 ms
Notes:
4) I
CHG
is the target preprogrammed charge current (Die temperature below 110°C).
5) I
BF
is the target preprogrammed battery full current threshold.
PIN FUNCTIONS
Pin # Name Description
1 IN Input Supply Pin. IN receives the AC adapter or USB supply voltage.
2
CHG
Open-Drain Charge Status Indicator. This pin is low during charging.
3
ACOK
Open-Drain Input ACOK Indicator. This pin is low if the voltage at the IN pin is between 2.5V
and 6V.
4
EN
Charger IC Enable. An input “Low” signal at this pin or if the pin is floating will enable the IC.
5 NTC
Negative Thermal 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 ground.
Do not leave this pin floating.
6 GND Ground.
7 SS
Soft-Start Timer. Connect this pin to an external capacitor to program the soft-start startup time
using the equation:
secm20
F1.0
C
T
SS
SS
×
µ
= .
8 IBF
Charge Status Threshold Program. Connect this pin to an external resistor to program the
charge termination current or battery full charge current.
9 ISET
Constant Charge Current Program. Connect this pin to an external resistor to program the
charging current in CC Mode.
10 BATT Charger Output.
P1-P3P4-P6P7-P9P10-P10

MP2602DQ-LF-Z

Mfr. #:
Buy MP2602DQ-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Battery Management 28V 1A Linear 1-Cell Li-Ion Chrg w/Trkle
Lifecycle:
New from this manufacturer.
Delivery:
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