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MP2608DQ-LF-P

P1-P3P4-P6P7-P9P10-P12
MP2608
28V, 1A Dual Input
Linear Battery Charger With Timer
MP2608 Rev. 0.9 www.MonolithicPower.com 1
8/29/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2608 is a dual-input, linear,
high-performance low-cost single cell Li-Ion or
Li-Polymer battery charger. It accepts two
power inputs, one from a USB (Universal BUS)
port and the other from an AC adapter. By
integrating high voltage input protection into the
charger IC, the MP2608 can tolerate an input
surge up to 28V. Due to the protection inputs
function, low-cost, large output tolerance
adapters can be used safely.
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge currents (100mA to
1.0A), current blocking and trickle charge. The
charge current for adapter input can be
programmed by an external resistor, while the
charge current for USB input is pre-set at
450mA.The device also provides charge status
and fault indications to the system.
For guaranteed safe operation, the MP2608
folds back charge current when the device is
heated up due to limited PCB space. Other
safety features are including battery
temperature monitoring, and programmable
timer to complete the charging cycle.
MP2608 is available in a 10-pin 3mm x 3mm
QFN package.
FEATURES
• Complete Solution for Charging Single-Cell
Lion-Ion Battery
• Input Surge Up to 28V
• Adapter and USB Input
• Programmable Charge Current: 100mA to 1.0A
• Pre-set USB Charge Current: 450mA
• Proprietary Constant Voltage Auto Recharge
• Proprietary Over-Voltage Protection
• 0.75% V
BATT
Accuracy over Temperature
• <1µA Battery Reverse Current
• 125µA Standby Current from V
IN
• Battery Temperature Monitoring
• Thermal Protection
• Fault and Charge Status Indicators
• Internal Soft-Start
• Tiny 3mm x 3mm QFN Package
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.
TYPICAL APPLICATION
To System
BATT
FAULT
STATUS
IN
USB
SHDN
ICHG
IBF
TMR GND
To AC Adapter
C1
C2
C3
R1 R4
R2
R3
D2
D1
MP2608
C4
To USB
MP2608- 28V, 1A DUAL INPUT LINEAR BATTERY CHARGER WITH TIMER
MP2608 Rev. 0.9 www.MonolithicPower.com 2
8/29/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
PACKAGE REFERENCE
TOP VIEW
IN
USB
FAULT
SHDN
1
2
3
4
5
10
9
8
7
6
STATUS
BATT
ICHG
GND
TMR
IBF
EXPOSED PAD
ON BACKSIDE
Part Number* Package Temperature
MP2608DQ
QFN10
(3mm x 3mm)
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP2608DQ–Z)
For RoHS compliant packaging, add suffix –LF
(eg. MP2608DQ–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
IN, USB 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
IN, USB Input Voltage V
IN,
V
USB
4.5 28 V
IN, USB Input Under-
voltage Threshold
V
IN-UV
IN Input Rising 3.75 4 4.25 V
IN, USB Input Over-
Voltage Threshold
V
IN-OV
IN Input Rising 5.8 6.0 6.2 V
SHDN= Low and BATT floating 100
Supply Current I
SUPPLY
SHDN = High and BATT floating 80
µA
Charger
T = +25°C, I
BATT
= 0 4.179 4.200 4.221
T = 0°C to +50°C, I
BATT
= 0 4.168 4.200 4.232
Battery Voltage Regulation V
BATT
T = –5°C to +75°C, I
BATT
= 0 4.158 4.200 4.242
V
Battery Over-Voltage
Protection
I
BATT_OVP
V
BATT
= 4.25V 0 µA
I
CHG,IN
V
IN
= 5V, V
BATT
= 3.8V
R
CHG
= 2.3kΩ
640 708 780 mA
Constant Current
Regulation
I
CHG,USB
V
IN
=0V, V
USB
= 5V, V
BATT
=3.8V 410 450 490 mA
Constant Current Variation
V
IN
= 5V, V
BATT
= 3.8V,
T
J
= 0°C to +120°C,
R
CHG
= 1.6kΩ to 8.0kΩ
87 100 113 %I
CHG
(4)
MP2608- 28V, 1A DUAL INPUT LINEAR BATTERY CHARGER WITH TIMER
MP2608 Rev. 0.9 www.MonolithicPower.com 3
8/29/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 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
V
DROP,IN
V
IN,
=4V, R
CHG
= 1.5kΩ, 1A load on
the BATT pin
130 mV
Pass Device Drop-out
Voltage
V
DROP,USB
V
USB
= 4V, 400mA load on the
BATT pin
152 mV
Trickle Current V
IN
= 5V, V
BATT
= 2.3V 5 10 15 %I
CHG
(4)
IBF Accuracy -20 +20 %IBF
Trickle Threshold Voltage 2.5 2.6 2.7 V
Trickle Voltage Hysteresis 100 mV
SHDN Trip High Threshold 2.0 V
SHDN Trip Low Threshold 0.4 V
SHDN Pull-down Resistor 500 kΩ
FAULT , STATUS Sink
Current
Pin Voltage = 0.4V 4 mA
Battery Reverse Current to
BATT Pin
SHDN = High and Input = Floating
or 0V
1 µA
Thermal Shutdown
Threshold
105 120 135 °C
Thermal Shutdown
Hysteresis
10 °C
Recharge Threshold
Recharge Voltage
Threshold
V
RECHG
4.0 V
Oscillator
Oscillator Period T
OSC
C
TIME
= 15nF 4.8 6.0 7.2 ms
TIMEOUT Period T
TIMEOUT
2
15
T
OSC
Notes:
4) I
CHG
is the target preprogrammed charge current (Die temperature below 110°C).
P1-P3P4-P6P7-P9P10-P12

MP2608DQ-LF-P

Mfr. #:
Buy MP2608DQ-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Battery Management 28V 1A 2-In Linear Batt Chrgr w/timer
Lifecycle:
New from this manufacturer.
Delivery:
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