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MAX1772EEI+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX1772EEI+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 20 page 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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