MAX1645AEEI Maxim Integrated Products, MAX1645AEEI Datasheet
MAX1645AEEI
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MAX1645AEEI Summary of contents
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... Battery Voltage Setting o ±0.8% Output Voltage Accuracy with Internal Reference Applications o 3A max Battery Charge Current o 6-Bit Charge Current Setting o 99.99% max Duty Cycle for Low-Dropout Operation o Load/Source Switchover Drivers o >97% Efficiency PART MAX1645EEI 28 CVS MAX1645AEEI 27 PDS 26 CSSP 25 CSSN 24 BST 23 DHI 22 LX ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ABSOLUTE MAXIMUM RATINGS DCIN, CVS, CSSP, CSSN GND....................-0.3V to +30V CSSP to CSSN, CSIP to CSIN ...............................-0.3V to +0.3V PDS, PDL to GND ...................................-0. BST to ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V BATT T = +25°C.) A PARAMETER SYMBOL PDL Load Switch Threshold V PDL-HYS Hysteresis PDL Turn-Off Current PDL ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V BATT T = +25°C.) A PARAMETER SYMBOL DC-TO-DC CONVERTER SPECIFICATIONS Minimum Off-Time t OFF Maximum On-Time t ON ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V BATT T = +25°C.) A PARAMETER SYMBOL SDA Output Data Valid from SCL t Maximum Charge Period Without ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V +16.8V BATT PARAMETER SYMBOL PDL Turn-On Resistance CVS Input Bias Current ERROR AMPLIFIER SPECIFICATIONS BATT Full-Charge ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V BATT PARAMETER SYMBOL LX Input Bias Current LX Input Quiescent Current BST Supply Current DLOV Supply Current Inductor ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V +16.8V BATT PARAMETER SYMBOL SDA Output Data Valid t DV from SCL Maximum Charge Period Without ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting (Circuit of Figure 20V +25°C, unless otherwise noted.) DCIN A EFFICIENCY vs. BATTERY CURRENT (VOLTAGE-CONTROL LOOP) 100 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting PIN NAME 1 DCIN DC Supply Voltage Input 2 LDO 5.4V Linear-Regulator Voltage Output. Bypass with a 1µF capacitor to GND. 3 CLS Source Current Limit Input 4 REF 4.096V ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Detailed Description The MAX1645/MAX1645A consist of current-sense amplifiers, an SMBus interface, transconductance amplifiers, reference circuitry, and a DC–DC converter (Figure 2). The DC–DC converter generates the control signals for the ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ADAPTER IN R13 D4 1k 1N4148 CVS DCIN C5 C23 1µF 0.1µF REF C7 R3 1µF 100k CLS R4 100k GND DAC C8 CCV 0.1µF R5 10k CCI C9 0.01µF ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting CSSP CSS CSSN CLS CSIP CSI CSIN BATT V DD SCL SDA INT SMB TEMP THM Figure 2. Functional Diagram ______________________________________________________________________________________ MAX1645/MAX1645A GMS LVC GMI GMV PDL DACI DACV BST ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Operating Conditions The MAX1645/MAX1645A change their operation depending on the voltages at DCIN, BATT, V THM. Several important operating states follow: • AC Present. When DCIN is > 7.5V, the ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ever BATTERY_PRESENT = 0 or ChargerMode() is writ- ten with POR_RESET = 1. The ALARM_INHIBITED sta- tus bit can also be cleared by writing a new charging current OR charging ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting MOST SIGNIFICANT ADDRESS BIT (A6) START CLOCKED INTO SLAVE CONDITION SCL t HD:STA SDA t t SU:STA SU:DAT Figure 4. SMBus Serial Interface Timing—Address SCL SDA Figure 5. SMBus Serial ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 1. ChargerSpecInfo() BIT NAME 0 CHARGER_SPEC 1 CHARGER_SPEC 2 CHARGER_SPEC 3 CHARGER_SPEC 4 SELECTOR_SUPPORT 5 Reserved 6 Reserved 7 Reserved 8 Reserved 9 Reserved 10 Reserved 11 Reserved 12 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 2. ChargerMode() BIT NAME 0 INHIBIT_CHARGE 1 ENABLE_POLLING 2 POR_RESET 3 RESET_TO_ZERO 4 AC_PRESENT_MASK 5 BATTERY_PRESENT_ MASK 6 POWER_FAIL_MASK HOT_STOP ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 3. ChargerStatus() BIT NAME 0 CHARGE_INHIBITED 1 MASTER_MODE 2 VOLTAGE_NOT_REG 3 CURRENT_NOT_REG 4 LEVEL_2 5 LEVEL_3 6 CURRENT_OR 7 VOLTAGE_OR 8 THERMISTOR_OR 9 THERMISTOR_COLD 10 THERMISTOR_HOT 11 THERMISTOR_UR 12 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 4. ChargerCurrent() BIT NAME Charge Current, DACI 0 7 Charge Current, DACI 1 8 Charge Current, DACI 2 9 Charge Current, DACI ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 5. ChargingVoltage() PIN BIT NAME Charge Voltage, DACV 0 5 Charge Voltage, DACV 1 6 Charge Voltage, DACV 2 7 Charge Voltage, DACV 3 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 6. AlarmWarning() BIT BIT NAME 0 Error Code 1 Error Code 2 Error Code 3 Error Code 4 FULLY_DISCHARGED 5 FULLY_CHARGED 6 DISCHARGING 7 INITIALIZING 8 REMAINING_TIME_ ALARM 9 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting ChargingCurrent() (POR: 0x0080) The ChargingCurrent() command uses the Write-Word protocol (Figure 3a). The command code for Charging- Current() is 0x14 (0b00010100). The 16-bit binary num- ber formed by D15–D0 represents ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting 18.432V 16.800V V = 4.096V REF VDCIN > 20V 12.592V 8.400V 4.192V 1.024V 0 0 0x0400 0x106x Figure 7. ChargingVoltage() Code to Voltage Mapping MAX1645A respond to the AlertResponse() address ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting RESET IMAX 4.0V CCMP IMIN 0.25V ZCMP 0.1V CONTROL CCS CCI CCV Figure 8. DC-to-DC Converter Functional Diagram ______________________________________________________________________________________ 10ms S BST MAX1645/MAX1645A CHG S Q ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting The low-side driver output DLO swings from 0V to DLOV. DLOV is usually connected through a filter to LDO. The high-side driver output DHI is bootstrapped off LX and swings ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting V CC +12V, -12V SYSTEM HOST (SMBus HOST) CRITICAL EVENTS BATTERY DATA/STATUS REQUESTS Figure 10. Typical Single Smart Battery System case the responsibility of the battery pack to ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting V CC SYSTEM +12V, -12V POWER SUPPLY SYSTEM HOST (SMBus HOST) CRITICAL EVENTS BATTERY DATA/STATUS REQUESTS Figure 11. Typical System Using Multiple Smart Batteries Table 8. Smart Battery Charger Type ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting (Table 8). Level 3 smart battery chargers are supersets of Level 2 chargers and, as such, support all Level 2 charger commands. Level 2 Smart Battery Charger The Level 2 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting Table 10. Component Selection DESIGNATION C1, C2 Input Capacitors C3, C4 Output Capacitors C5, C19, C20 C6, C7, C12 C8, C14, C16 C9, C10, C11 Compensation Capacitors C13 C18, C24 ...
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Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting rent capabilities and degrade efficiency. Typically, a 22µH inductor is ideal for all operating conditions. Other Components CCV, CCI, and CCS are the compensation points for the three regulation loops. ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 32 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products DDS ...