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MP2670DQ-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP2670
Li-ion Battery Charger
Protection Circuit
MP2670 Rev. 0.91 www.MonolithicPower.com 1
5/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2670 is a high-performance single cell
Li-Ion/Li-Polymer battery charger protection
circuit. By integrating high voltage input
protection into the charger IC, the MP2670 can
tolerate an input surge up to +30V.
The device features input over voltage
protection (OVP), battery over voltage
protection (BOVP) and over charge current
protection (OCP). The device also provides
fault indications to the system when any of the
protection events happens.
For guaranteed safe operation, the MP2670
monitors its own internal temperature and turns
off the MOSFET bridging VIN and OUT when
the die temperature exceeds 150
o
C.
The MP2670 is available in a 10-pin 3mm x
3mm QFN package.
FEATURES
• Input Surge up to 30V
• Input Over voltage protection in 1us.
• Proprietary Battery Over-Voltage Protection
• Programmable Charge Current Protection
Limit Value.
• Temperature Monitoring and Protection
• Fault Indication
• Enable Input
• 3mm x 3mm QFN Package
APPLICATIONS
• Cell Phones
• MP3 Players
• Smart Phones
• PDA
• Digital Cameras
• Desktop Chargers
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP2670
VIN OUT
VB
EN
FLT
ILIM
GND
INPUT
LINEAR
BATTERY
CHARGER
BATTERY
PACK
C
OUT
C
IN
R
ILIM
R
VB
R
FLT
+
MP2670 – CHARGE SYSTEM PROTECTION CIRCUIT
MP2670 Rev. 0.91 www.MonolithicPower.com 2
5/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking Temperature
MP2670DQ
QFN10
(3mm x 3mm)
X7
–40°C to +85°C
* For Tape & Reel, add suffix –Z (g. MP2670DQ–Z).For RoHS compliant packaging, add suffix –LF (e.g.
MP2670DQ–LF–Z)
PACKAGE REFERENCE
TOP VIEW
VIN
GND
FLT
NC
NC
1
2
3
4
5
OUT
OUT
ILIM
VB
EN
10
9
8
7
6
EXPOSED PAD
ON BACKSIDE
CONNECT TO GND
ABSOLUTE MAXIMUM RATINGS
(1)
V
IN
to GND......................................–0.3V to 30V
OUT and VB to GND........................–0.3V to 7V
Other Pins (ILIM,
FLT , EN ) ..........–0.3V to 5.5V
Junction Temperature...............................150°C
Lead Temperature (Solder).......................260°C
Storage Temperature.............. –65°C to +150°C
Recommended Operating Conditions
(2)
Supply Voltage V
IN
..........................4.3V to 5.5V
Operating Temperature............. –40°C to +85°C
Thermal Resistance
(3)
θ
JA
θ
JC
QFN10 (3mm x 3mm) .............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 JESD51-7, 4-layer PCB.
MP2670 – CHARGE SYSTEM PROTECTION CIRCUIT
MP2670 Rev. 0.91 www.MonolithicPower.com 3
5/13/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
= 5V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Power-On Reset
Rising VIN Threshold
V
POR
2.45 3.0 V
POR Hysteresis 110 mV
When enabled 0.6 mA
VIN Bias Current I
VIN
When disabled 25 µA
Protection
Input Over-voltage Protection
(OVP)
V
OVP
5.55 5.80 6.0 V
Input OVP Hysteresis 50 mV
Input OVP Falling Threshold 5.45 V
Input OVP Propagation Delay 1 µs
Over-current Protection I
OCP
V
VB
= 3V, R
ILIM
= 25k 0.90 1.0 1.10 A
Overcurrent Protection Blanking
Time
BT
OCP
170 µs
Battery Over-voltage Protection
Threshold
V
BOVP
4.29 4.475 V
Battery OVP Threshold
Hysteresis
75 mV
Battery OVP Falling Threshold 4.225 V
Battery OVP Blanking Time BT
BOVP
180 µs
VB Pin Leakage Current V
VB
= 4.4V 20 nA
Over Temperature Protection
Rising Threshold
150
°C
Over Temperature Protection
Falling Threshold
110
°C
Logic
EN Input Logic HIGH
1.5 V
EN Input Logic LOW
0.4 V
EN Internal Series Resistor 100 200 400 k
FLT Output Logic Low Sink 5mA current 0.5 0.8 V
FLT Output Logic High Leakage
Current
1 µA
Power MOSFET
On Resistance R
DS(ON)
Measured at 500mA,
4.3<V
IN
<5.5V
250 450 m
P1-P3P4-P6P7-P9P10-P12

MP2670DQ-LF-Z

Mfr. #:
Buy MP2670DQ-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Battery Management Li-ion Battery Charg Protection Circuit
Lifecycle:
New from this manufacturer.
Delivery:
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