MAX1772(2002) 查看數據表（PDF） - Maxim Integrated
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MAX1772 Datasheet PDF : 20 Pages
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Low-Cost, Multichemistry Battery-
Charger Building Block
ELECTRICAL CHARACTERISTICS (continued)
(VDCIN = VCSSP = VCSSN = 18V, VBATT = VCSIP = VCSIN = 12V, VREFIN = 3.0V, VVCTL = VICTL = 0.75 ✕ REFIN, CELLS = 2.0V,
ACIN = 0, CLS = REF, VBST - VLX = 4.5V, GND = PGND = 0, 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
DLOV Supply Current
BST Supply Current
LX Input Bias Current
LX Input Quiescent Current
DHI Maximum Duty Cycle
IDLOV
IBST
DLO low
DHI high
VDCIN = 28V, VBATT = VLX = 20V
VDCIN = 0, VBATT = VLX = 20V
5
10
µA
6
15
µA
150
500
µA
0.3
1.0
µA
99.0 99.9
%
DHI On-Resistance High
DHI On-Resistance Low
DLO On-Resistance High
DLO On-Resistance Low
BATT Input Current
CSIP/CSIN Input Current
CSSP/CSSN Input Current
IBATT
VBST - VLX = 4.5V, IDHI = +100mA
VBST - VLX = 4.5V, IDHI = -100mA
VDLOV = 4.5V, IDLO = +100mA
VDLOV = 4.5V, IDLO = -100mA
VBATT = 19V, VDCIN = 0
VBATT = 2V to 19V, VDCIN > VBATT + 0.3V
VDCIN = 0
VCSIP = VCSIN = 12V
VDCIN = 0
VCSSP = VCSSN = VDCIN > 8.0V
4
7
Ω
1
2
Ω
4
7
Ω
1
2
Ω
5
µA
200
500
1
5
µA
800
0.1
0.3
µA
800
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
ERROR AMPLIFIERS
GMV Amplifier
Transconductance
189
204
219
mV
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
CCI/CCS/CCV Clamp Voltage
CURRENT AND VOLTAGE SETTING
Charging-Current Accuracy
ICTL, VCTL, REFIN Input Bias
Current
ICTL Power-Down Mode
Threshold Voltage
VCLS = 2.048V, VCSSP - VCSSN = 102.4mV
0.25V < VCCV/S/I < 2.0V
ICTL = REFIN (see Equation 2)
ICTL = REFIN/32 (see Equation 2)
VVCTL = VICTL = VREFIN = 3V
VDCIN = 0, VVCTL = VICTL = VREFIN = 5V
0.5
1
2
µS
150
300
600
mV
-8
+8
%
-55
+55
-1
+1
µA
-1
+1
REFIN REFIN REFIN
/100
/55
/33
V
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