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MAX1925 датащи(PDF) 4 Page - Maxim Integrated Products

номер детали MAX1925
подробное описание детали  Switch-Mode 1-Cell Li Chargers
PDF  16 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1925 датащи(HTML) 4 Page - Maxim Integrated Products

  MAX1925 Datasheet HTML 1Page - Maxim Integrated Products MAX1925 Datasheet HTML 2Page - Maxim Integrated Products MAX1925 Datasheet HTML 3Page - Maxim Integrated Products MAX1925 Datasheet HTML 4Page - Maxim Integrated Products MAX1925 Datasheet HTML 5Page - Maxim Integrated Products MAX1925 Datasheet HTML 6Page - Maxim Integrated Products MAX1925 Datasheet HTML 7Page - Maxim Integrated Products MAX1925 Datasheet HTML 8Page - Maxim Integrated Products MAX1925 Datasheet HTML 9Page - Maxim Integrated Products Next Button
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Switch-Mode 1-Cell Li+ Chargers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(VPGND = VGND = 0, VINP = VIN = VCHG = 5V, VBATT = VCS = VEN = 4V, THRM = 10k
Ω to GND, CCT = 100nF, TA = -40°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.) (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
VINP, VIN (MAX1925 does not charge above 6.1V)
4.5
12.0
V
MAX1925
4.30
4.78
VINP, VIN rising
MAX1926
4.0
4.5
MAX1925
4.17
4.43
ACON Trip point
VINP, VIN falling
MAX1926
3.9
4.4
V
Rising
5.8
6.4
INP, IN Shutdown Threshold
MAX1925
Falling
5.3
5.9
V
EN Input Resistance
MAX1926 internally pulled up to 3V
125
550
k
Ω
EN Leakage Current
MAX1925
-1
+1
µA
EN Logic Input High Threshold
2
V
EN Logic Input Low Threshold
0.8
V
DONE State, VBATT = 4.1V
50
EN = GND (Note 2)
10
BATT + CS Input Current
(Total Current into BATT and CS)
VBATT = VINP = VIN = 4V, shutdown (Note 1)
10
µA
EN = GND
8
mA
VBATT = VINP = VIN = 4V, shutdown
10
µA
VBATT = 4.1V, charging
10
IN + INP Total Input Current
VBATT = 4.3V, done
8
mA
VOLTAGE LOOP
Voltage Loop Set Point
4.158
4.242
V
BATT Prequal1 Voltage Threshold
1.9
2.1
V
BATT Prequal2 Voltage Threshold
2.85
3.15
V
Restart Threshold
Charging restarts when BATT falls to this point
3.92
4.08
V
BATT Voltage Fault Threshold
If BATT exceeds this threshold, EXT is high (external
MOSFET is off) and CHG blinks
4.275
4.425
V
CURRENT LOOP
CS - BATT Sense Threshold
VCS - VBATT, average value
127
157
mV
Prequal1 Charge Current
VBATT < 2V
3
6
mA
Current Threshold for Full-Battery
Indication
ILOAD falling, as percentage of fast charge current
4
20
%
DRIVER FUNCTIONS
EXT On-Resistance
EXT high or low
12
Ω
TIMER FUNCTIONS
Timer Accuracy
CCT = 100nF for 3 hours
-16
+16
%
CHG Output Low Current
V CHG = 1V
7
14
mA



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