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MP2623 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP2623
Description  Stand-Alone, 2A, 1- or2-Cell Switching LiFePO4 Battery Charger
PDF  16 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2623 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP2623 – 2A, 24V INPUT, 1.1MHz 1- OR 2-CELL SWITCHING LIFEPO4 BATTERY CHARGER
MP2623 Rev. 1.0
www.MonolithicPower.com
3
3/16/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 19V, TA = 25°C, CELLS=0V, unless otherwise noted.
Parameters
Symbol Condition
Min
Typ
Max
Units
Battery-terminal voltage
VBATT
CELLS=0V
3.573
3.6
3.627
V
CELLS=Float
7.146
7.2
7.254
CSP，BATT current
ICSP,IBATT Charging disabled
1
µA
Switch-on resistance
RDS(ON)
0.2
Ω
Switch leakage
EN= 4V, VSW = 0V
0
1
μA
Peak-current limit
CC
(5)
4.1
A
TRICKLE
2
A
CC current
ICC
RS1=100mΩ
1.8
2.0
2.2
A
Trickle-charge current
ITRICKLE
10%
ICC
Trickle-charge voltage threshold
VTC
2.52
V/cell
Trickle-charge hysteresis
300
mV/cell
Termination current threshold
IBF
5%
10%
15%
ICC
Oscillator frequency
fSW
CELLS=0V,
VBATT =3.2V
1100
kHz
Fold-back frequency
VBATT =0V
350
kHz
Maximum duty cycle
90
%
Maximum current-sense voltage
(CSP to BATT)
VSENSE
170
200
230
mV
Minimum ON time
(5)
tON
100
ns
Under-voltage lockout threshold,
rising
VIN
3.1
3.3
3.5
V
Under-voltage lockout threshold,
hysteresis
300
1000
mV
Open-drain sink current
VDRAIN =0.3V
5
mA
Dead battery indicator
In trickle mode
CTMR=0.1μF
30
min
Recharge threshold for VBATT
VRECHG
3.42
V/cell
Recharge hysteresis
100
mV
NTC low-temp rising threshold
RNTC=NCP18X103, 0°C
70.5
73.5
76.5
%of
VREF33
NTC high-temp falling threshold
RNTC=NCP18X103,
50°C
27.5
29.5
31.5
%of
VREF33
VIN min. head-room (reverse
blocking)
VIN−VBATT
180
mV



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