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MAX1772 Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX1772
Description  Low-Cost, Multichemistry Battery-Charger Building Block
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1772 Datasheet(HTML) 5 Page - Maxim Integrated Products

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Low-Cost, Multichemistry Battery-
Charger Building Block
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS
(VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VREFIN = 3.0V, VVCTL = VICTL = 0.75  VREFIN, VCELLS = 2.0V,
VACIN = 0V, CLS = REF, VBST - VLX = 4.5V, VGND = VPGND = 0V, CLDO = 1µF, LDO = DLOV, CREF = 1µF; pins CCI, CCS, and CCV
are compensated per Figure 1a; TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY AND LDO REGULATOR
DCIN Input Voltage Range
VDCIN
8.0
28.0
V
VDCIN falling
7
DCIN Undervoltage Lockout
Trip Point
VDCIN rising
7.85
V
DCIN Quiescent Current
IDCIN
8.0V < VDCIN < 28V
6
mA
LDO Output Voltage
8.0V < VDCIN < 28V, no load
5.25
5.65
V
TRIP POINTS
BATT POWER_FAIL Threshold
VCSSP falling
50
150
mV
BATT POWER_FAIL Threshold
Hysteresis
100
300
mV
ACIN Threshold
VACIN rising
2.007
2.089
V
ACIN Threshold Hysteresis
0.5% of REF
10
30
mV
ACIN Input Bias Current
VACIN = 2.048V
-1
+1
µA
CLS Input Range
1.6
REF
V
CLS Input Bias Current
VCLS = 2.0V
-1
+1
µA
SWITCHING REGULATOR
Minimum Off-Time
VBATT = 16.8V
1
1.5
µs
Maximum On-Time
5
15
ms
Oscillator Frequency
fOSC
(Note 1)
400
kHz
DHI Maximum Duty Cycle
99
%
VBATT = 19V, VDCIN = 0V
5
BATT Input Current
IBATT
VBATT = 2V to 19V, VDCIN > VBATT + 0.3V
500
µA
VDCIN = 0V
5
CSIP/CSIN Input Current
VCSIP = VCSIN = 12V
800
µA
VDCIN = 0V
0.3
CSSP/CSSN Input Current
VCSSP = VCSSN = VDCIN > 8.0V
800
µA
BATT/CSIP/CSIN Input Voltage
Range
0
19
V
CSIP to CSIN Full-Scale
Current-Sense Voltage
VBATT = 12V
189
219
mV
CSSP to CSSN Full-Scale
Current-Sense Voltage
189
219
mV
CURRENT AND VOLTAGE SETTING
ICTL = REFIN (see Equation 2)
-8
+8
Charging Current Accuracy
ICTL = REFIN/32 (see Equation 2)
-55
+55
%
VVCTL = VICTL = VREFIN = 3V
-1
+1
ICTL, VCTL, REFIN Input Bias
Current
VDCIN = 0V, VVCTL = VICTL = VREFIN = 5V
-1
+1
µA


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