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MPS

MP2637GR Datasheet Preview

MP2637GR Datasheet

2.5A Single Cell Switch Mode Battery Charger

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MP2637
2.5A Single Cell Switch Mode Battery Charger
with Power Path Management (PPM)
and 2.4A Boost Current with Trickle Timer
DESCRIPTION
The MP2637 is a highly-integrated, flexible,
switch-mode battery charger with system power
path management, designed for single-cell Li-
ion or Li-Polymer batteries used in a wide range
of applications.
The MP2637 can operate in both charge mode
and boost mode to allow full system and battery
power management.
When input power is present, the device
operates in charge mode. It automatically
detects the battery voltage and charges the
battery in three phases: trickle current, constant
current and constant voltage. Other features
include charge termination and auto-recharge.
This device also integrates both input current
limit and input voltage regulation in order to
manage input power and meet the priority of the
system power demand.
In the absence of an input source, the MP2637
switches to boost mode through the MODE pin
to power the SYS pins from the battery. The
OLIM pin programs the output current limit in
boost mode. The MP2637 also allows for output
short circuit protection to completely disconnect
the battery from the load in the event of a short
circuit fault. Normal operation will recover as
soon as the short circuit fault is removed. The
MP2637 provides full operating status indication
to distinguish charge mode from boost mode.
To guarantee safe operation, the MP2637 limits
the die temperature to a preset value of 120oC.
Other safety features include input over-voltage
protection, battery over-voltage protection,
thermal shutdown, battery temperature
monitoring, and a programmable timer to
prevent prolonged charging of a dead battery.
FEATURES
Up to 16V Sustainable Input Voltage
4.5V-to-6V Operating Input Voltage Range
Power Management function, Integrated
Input-Current Limit, Input Voltage
Regulation
Up to 2.5A Programmable Charge Current
Trickle-Charge Function
Selectable 4.2V/ 4.35V Charge Voltage with
0.5% Accuracy
Negative Temperature Coefficient Pin for
Battery Temperature Monitoring
Programmable Timer Back-Up Protection
Thermal Regulation and Thermal Shutdown
Internal Battery Reverse Leakage Blocking
Integrated Over Voltage Protection and
Over Current Protection for Pass-Through
Path
Reverse Boost Operation Mode for System
Power
Up to 2.4A Programmable Output Current
Limit for Boost Mode
Integrated Short Circuit Protection and
Output Over Voltage Protection for Boost
Mode
APPLICATIONS
Sub-Battery Applications
Power-Bank Applications for Smart-Phone
Tablet and Other Portable Devices
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
MP2637 Rev. 1.04
www.MonolithicPower.com
1
8/3/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.




MPS

MP2637GR Datasheet Preview

MP2637GR Datasheet

2.5A Single Cell Switch Mode Battery Charger

No Preview Available !

MP2637 2.5A SINGLE CELL SW MODE BATTERY CHARGER WITH PPM AND 2.4A BOOST
TYPICAL APPLICATION
R1
R2 ROLIM*
CSYS*
To 5V System
C2
5V Input
R4
R3
CIN
R6
R5
C4*
RILIM
SYS
VIN
Q1
REG
PWIN
FB
OLIM
SW
Q2 Q3
CSP
Q4
BATT
NTC
MP2637
VB
VCC
EN
MODE
CHG
ACOK
BOOST
ISET
ILIM
TMR
AGND PGND
L1* RS1
VSYS
ICHG
IBATT
CBATT
VBATT
Battery
Battery Voltage GND: 4.35V
Program
High/Float: 4.2V
VCC
CTMR RISET
*Note:
1. ROLIM CANNOT be lower than 47.5kΩ. ROLIM is for the boost output current loop setting, and please refer to
the APPLICATION INFORMATION section for details.
2. CSYS should be put as close to the SYS pin and PGND as possible. At least 22μF is recommended, and
CSYS+C2 should not be less than 44μF, the ceramic is preferred and E-cap is not recommended.
3. VCC cap should not exceed 100nF. Recommend 47nF or 100nF.
4. Inductor should not exceed 2.2μH. Recommend 1.5μH or 2.2μH.
MP2637 Rev. 1.04
www.MonolithicPower.com
2
8/3/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.


Part Number MP2637GR
Description 2.5A Single Cell Switch Mode Battery Charger
Maker MPS
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