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
CSSN Input Current
(MAX8765/MAX8765A Only)
CLS Input Range
(MAX1908/MAX8724 Only)
SYMBOL
CONDITIONS
VCSSP = VCSSN = 28V
VDCIN = 0V
VDCIN = 28V
MIN TYP MAX UNITS
0.1
1
µA
0.1
1
1.6
REF
V
CLS Input Range
(MAX8765/MAX8765A Only)
1.1
REF
V
CLS Input Bias Current
IINP Transconductance
(MAX1908/MAX8724 Only)
GIINP
VCLS = 2V
VCSSP - VCSSN = 75mV
-1
+1
µA
2.7
3
3.3 µA/mV
IINP Accuracy
IINP Transconductance
(MAX8765/MAX8765A Only)
GIINP
VCSSP - VCSSN = 75mV
VCSSP - VCSSN = 37.5mV
VCSSP - VCCSN = 75mV
-5
+5
%
-7.5
+7.5
2.82
3
3.18 µA/mV
IINP Transconductance Error
(MAX8765/MAX8765A Only)
-6
+6
%
IINP Transconductance Offset
(MAX8765/MAX8765A Only)
-10
+10
µA
IINP Output Current
IINP Output Voltage
SUPPLY AND LDO REGULATOR
DCIN Input Voltage Range
DCIN Undervoltage-Lockout Trip
Point
DCIN Quiescent Current
VDCIN
IDCIN
BATT Input Current
IBATT
LDO Output Voltage
LDO Load Regulation
LDO Undervoltage-Lockout Trip
Point
VCSSP - VCSSN = 150mV, VIINP = 0V
VCSSP - VCSSN = 150mV, VIINP = open
VDCIN falling
VDCIN rising
8.0V < VDCIN < 28V
VBATT = 19V, VDCIN = 0V
VBATT = 2V to 19V, VDCIN = 19.3V
8V < VDCIN < 28V, no load
0 < ILDO < 10mA
VDCIN = 8V
350
µA
3.5
V
8
28
V
7
7.4
V
7.5
7.85
3.2
6
mA
1
µA
200
500
5.25
5.4
5.55
V
34
100
mV
3.20
4
5.15
V
REFERENCE
REF Output Voltage
REF Undervoltage-Lockout Trip
Point
0 < IREF < 500µA
VREF falling
4.072 4.096 4.120
V
3.1
3.9
V
4
Maxim Integrated
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