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MAX1772EEI+ Datasheet(PDF) 3 Page - Maxim Integrated Products

Part # MAX1772EEI+
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

MAX1772EEI+ Datasheet(HTML) 3 Page - Maxim Integrated Products

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Low-Cost, Multichemistry Battery-
Charger Building Block
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(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 = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum On-Time
5
10
15
ms
Oscillator Frequency
fOSC
(Note 2)
400
kHz
DLOV Supply Current
IDLOV
DLO low
5
10
µA
BST Supply Current
IBST
DHI high
6
15
µA
LX Input Bias Current
VDCIN = 28V, VBATT = VLX = 20V
150
500
µA
LX Input Quiescent Current
VDCIN = 0V, VBATT = VLX = 20V
0.3
1.0
µA
DHI Maximum Duty Cycle
99.0
99.9
%
DHI On-Resistance High
VBST - VLX = 4.5V, IDHI = +100mA
4
7
Ω
DHI On-Resistance Low
VBST - VLX = 4.5V, IDHI = -100mA
1
2
Ω
DLO On-Resistance High
VDLOV = 4.5V, IDLO = +100mA
4
7
Ω
DLO On-Resistance Low
VDLOV = 4.5V, IDLO = -100mA
1
2
Ω
VBATT = 19V, VDCIN = 0V
5
BATT Input Current
IBATT
VBATT = 2V to 19V, VDCIN > VBATT + 0.3V
200
500
µA
VDCIN = 0V
1
5
CSIP/CSIN Input Current
VCSIP = VCSIN = 12V
800
µA
VDCIN = 0V
0.1
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
204
219
mV
CSSP to CSSN Full-Scale
Current-Sense Voltage
189
204
219
mV
ERROR AMPLIFIERS
GMV Amplifier
Transconductance
VCTL = REFIN, VBATT = 16.8V, CELLS = LDO
0.0625
0.1250
0.250
µS
GMI Amplifier
Transconductance
ICTL = REFIN, VCSIP - VCSIN = 150.4mV
0.5
1
2
µS
GMS Amplifier
Transconductance
VCLS = 2.048V, VCSSP - VCSSN = 102.4mV
0.5
1
2
µS
CCI/CCS/CCV Clamp Voltage
0.25V < VCCI, VCCS, VCCV < 2.0V
150
300
600
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 = 0, VVCTL = VICTL = VREFIN = 5V
-1
+1
µA
ICTL Power-Down Mode
Threshold Voltage
REFIN
/100
REFIN
/55
REFIN
/33
V


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