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MAX1908 数据表(PDF) 6 Page - Maxim Integrated Products

部件名 MAX1908
功能描述  Low-Cost Multichemistry Battery Chargers
PDF  27 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX1908 数据表(HTML) 6 Page - Maxim Integrated Products

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Low-Cost Multichemistry Battery Chargers
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VREFIN = 3V, VVCTL = VICTL = 0.75 x VREFIN, CELLS = FLOAT, CLS =
REF, VBST - VLX = 4.5V, ACIN = GND = PGND = 0, CLDO = 1µF, LDO = DLOV, CREF = 1µF; CCI, CCS, and CCV are compensated
per Figure 1a; TA = -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CHARGE VOLTAGE REGULATION
VVCTL = VREFIN (2, 3, or 4 cells)
-0.6
+0.6
VVCTL = VREFIN / 20 (2, 3, or 4 cells)
-0.6
+0.6
Battery Regulation Voltage
Accuracy
VVCTL = VLDO (2, 3, or 4 cells)
-0.6
+0.6
%
REFIN Range
(Note 1)
2.5
3.6
V
REFIN Undervoltage Lockout
VREFIN falling
1.92
V
CHARGE CURRENT REGULATION
CSIP-to-CSIN Full-Scale Current-
Sense Voltage
VICTL = VREFIN
70.5
79.5
mV
VICTL = VREFIN
-6
+6
VICTL = VREFIN
× 0.6
-7.5
+7.5
VICTL = VLDO
-7.5
+7.5
Charging Current Accuracy
MAX8724 only: VICTL = VREFIN x 0.058
-33
+33
%
BATT/CSIP/CSIN Input Voltage
Range
0
19
V
VDCIN = 0 or VICTL = 0 or SHDN = 0
1
CSIP/CSIN Input Current
Charging
650
µA
Cycle-by-Cycle Maximum Current
Limit
IMAX
RS2 = 0.015
Ω
6.0
7.5
A
ICTL Power-Down Mode
Threshold Voltage
VICTL rising
REFIN /
100
REFIN /
33
V
ICHG Transconductance
GICHG
VCSIP - VCSIN = 45mV
2.7
3.3
µA/mV
VCSIP - VCSIN = 75mV
-7.5
+7.5
VCSIP - VCSIN = 45mV
-7.5
+7.5
ICHG Accuracy
VCSIP - VCSIN = 5mV
-40
+40
%
INPUT CURRENT REGULATION
CSSP-to-CSSN Full-Scale
Current-Sense Voltage
71.25
78.75
mV
VCLS = VREF
-5
+5
Input Current-Limit Accuracy
VCLS = VREF / 2
-7.5
+7.5
%
CSSP, CSSN Input Voltage
Range
8
28
V
VDCIN = 0
1
CSSP, CSSN Input Current
VCSSP = VCSSN = VDCIN > 8V
600
µA
CLS Input Range
1.6
REF
V
IINP Transconductance
GIINP
VCSSP - VCSSN = 75mV
2.7
3.3
µA/mV
VCSSP - VCSSN = 75mV
-7.5
+7.5
IINP Accuracy
VCSSP - VCSSN = 37.5mV
-7.5
+7.5
%



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