MAX1908 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1908 Datasheet PDF : 30 Pages
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MAX1908/MAX8724/MAX8765/MAX8765A
Low-Cost Multichemistry Battery Chargers
ELECTRICAL CHARACTERISTICS (continued)
(VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VREFIN = 3V, VVCTL = VICTL = 0.75 x VREFIN, CELLS = open, 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 = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CSIP/CSIN Input Current
SYMBOL
CONDITIONS
VDCIN = 0V or VICTL = 0V or V SHDN = 0V
Charging
MIN TYP MAX UNITS
1
µA
400
650
Cycle-by-Cycle Maximum Current
Limit
RS2 = 0.015mΩ
6.0
6.8
7.5
A
ICTL Power-Down Mode
Threshold Voltage
(MAX1908/MAX8724 Only)
VVCTL rising
REFIN/ REFIN/ REFIN/
100
55
33
V
ICTL, VCTL Input Bias Current
REFIN Input Bias Current
ICHG Transconductance
(MAX1908/MAX8724 Only)
ICHG Transconductance
(MAX8765/MAX8765A Only)
ICHG Transconductance Error
(MAX8765/MAX8765A Only)
ICHG Transconductance Offset
(MAX8765/MAX8765A Only)
ICHG Accuracy
ICHG Output Current
ICHG Output Voltage
INPUT-CURRENT REGULATION
CSSP-to-CSSN Full-Scale
Current-Sense Voltage
Input Current-Limit Accuracy
Input Current-Limit Gain Error
(MAX8765/MAX8765A Only)
Input Current-Limit Offset
(MAX8765/MAX8765A Only)
CSSP, CSSN Input Voltage
Range
CSSP, CSSN Input Current
(MAX1908/MAX8724 Only)
CSSP Input Current
(MAX8765/MAX8765A Only)
GICHG
GICHG
VVCTL = VICTL = 0 or 3V
VDCIN = 0V, VVCTL = VICTL = VREFIN = 5V
VDCIN = 5V, VREFIN = 3V
VREFIN = 5V
VCSIP - VCSIN = 45mV
VCSIP - VCSIN = 45mV
VCSIP - VCSIN = 75mV
VCSIP - VCSIN = 45mV
VCSIP - VCSIN = 5mV
VCSIP - VCSIN = 150mV, VICHG = 0V
VCSIP - VCSIN = 150mV, ICHG = open
VCLS = VREF
VCLS = VREF/2
VCLS = 1.1V (MAX8765/MAX8765A only)
VDCIN = 0V
VCSSP = VCSSN = VDCIN > 8V
VCSSP = VCSSN = 28V
VDCIN = 0V
VDCIN = 28V
-1
+1
µA
-1
+1
-1
+1
µA
-1
+1
2.7
3
3.3 µA/mV
2.85
3
3.15 µA/mV
-5
+5
%
-5
+5
µA
-6
+6
-5
+5
%
-40
+40
350
µA
3.5
V
72
75
78
mV
-4
+4
-7.5
+7.5
%
-10
+10
-2
+2
%
-2
+2
mV
8
28
V
0.1
1
µA
350
600
0.1
1
µA
400
650
Maxim Integrated
3
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