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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 4
8/29/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
1 IN Input Supply. IN receives the AC adapter supply voltage.
2 USB Input Supply. USB receives the USB supply voltage.
3
FAULT
Open-Drain Fault Status Indicator. This pin is low under any fault conditions.
4
STATUS
Open-Drain Charge Indicator. This pin is low during charging.
5 SHDN
Charger IC Shut-down. Pull SHDN high to disable the IC or leave it floating to
enable the IC.
6 IBF Programmable Input for end of charger current.
7 TMR
Oscillator Period Timer. Connect a timing capacitor between this pin and GND to
set the oscillator period. A 1uF capacitor on the TMR pin will make the oscillator
period 400ms.
8 GND
Ground. Exposed pad and GND must connect to same ground plane.
9 ICHG
Constant Charge Current Program for the IN input. Connect this pin to an external
resistor to program the charging current in CC Mode when the current from the IN
pin charges the battery.
10 BATT Charger Output.
MP2608- 28V, 1A DUAL INPUT LINEAR BATTERY CHARGER WITH TIMER
MP2608 Rev. 0.9 www.MonolithicPower.com 5
8/29/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
=5V, C
IN
=2.2uF, C
OUT
=1uF, R
CHG
=2.21k, T
A
=25°C, unless otherwise noted.
INPUT VOLTAGE (V) INPUT VOLTAGE (V)
020 8040 60 0 50 200100 150
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.50
0.45
CHARGE TIME (MINUTES) CHARGE TIME (MINUTES)
Battery Charge Curve Battery Charge Curve
0.1
0
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
CHARGE CURRENT(A)
CHARGE CURRENT(A)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
Charge Current vs.
Battery Voltage
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
CHARGE CURRENT (A)
Battery Voltage vs.
Input Voltage
3.5
3.7
3.9
4.1
4.3
4.5
4.5 4.8 5.1 5.4 5.7 6
Adapater In
USB In
Charge Current vs.
Battery Voltage
0
100
200
300
400
500
600
700
800
900
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1
BATTERY VOLTAGE (V)
CHARGE CURRENT(mA)
CHARGE CURRENT(mA)
Charge Current vs.
Input Voltage
0
200
400
600
800
1000
1200
4 4.3 4.6 4.9 5.2 5.5 5.8
Adapater In
USB In
Charge Current vs.
R
SET
Resistance
0
200
400
600
800
1000
1200
0 5 10 15 20
CHARGE CURRENT (mA)
R
SET
RESISTANCE
Reverse Current vs.
Battery Voltage
0
0.1
0.2
0.3
0.4
0.5
1.5 2.0 2.5 3.0 3.5 4.0 4.5
MP2608- 28V, 1A DUAL INPUT LINEAR BATTERY CHARGER WITH TIMER
MP2608 Rev. 0.9 www.MonolithicPower.com 6
8/29/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2008 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
V
IN
=5V, C
IN
=2.2uF, C
OUT
=1uF, R
CHG
=2.21k, T
A
=25°C, unless otherwise noted.
Startup with SD
(Adapter In)
Shutdown with SD
(Adapter In)
Shutdown with SD
(USB In)
Startup with SD
(USB In)
Power Off
(Adapter In)
Power Off
(USB In)
V
IN
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
IN
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
SD
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
SD
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
SD
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
SD
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
IN
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
V
IN
2V/div
V
BATT
2V/div
V
STATUS
2V/div
I
BATT
500mA/div
4ms/div
10ms/div 10ms/div
4ms/div
4ms/div
2ms/div
Power On
(Adapter In)
Power On
(USB In)
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:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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