MAX1645BEEI Maxim Integrated Products, MAX1645BEEI Datasheet
MAX1645BEEI
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MAX1645BEEI Summary of contents
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... Up to 18.4V Battery Voltage o 11-Bit 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 MAX1645BEEI 28 CVS 27 PDS 26 CSSP 25 CSSN 24 BST 23 DHI ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Charger with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V BATT T = +25°C.) A PARAMETER SYMBOL PDL Load Switch Threshold V Hysteresis PDL Turn-Off Current PDL Turn-On ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Maximum On-Time Maximum Duty Cycle ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Maximum Charge Period Without a ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Charger with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V BATT PARAMETER SYMBOL DC-TO-DC CONVERTER SPECIFICATIONS Minimum Off-Time Maximum On-Time Maximum Duty Cycle LX Input Bias Current LX ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure +3.3V +16.8V BATT PARAMETER SYMBOL SDA Output Data Valid from SCL Maximum Charge Period Without a ChargingVoltage() ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Charger 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 Reference ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting Detailed Description The MAX1645B consists 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 Charger with Input Current Limiting ADAPTER IN R13 D4 1kΩ 1N4148 C23 C5 0.1µF 1µ 100kΩ 1µF R4 100kΩ C8 0.1µF R17 R5 10kΩ 10kΩ C10 C9 0.01µF 1nF R18 10kΩ C11 1nF ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting CSSP CSS CSSN CLS CSIP CSI CSIN BATT V DD SCL SDA INT SMB TEMP THM Figure 2. Functional Diagram ______________________________________________________________________________________ MAX1645B GMS LVC GMI GMV PDL DACI DACV BST ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting Operating Conditions The MAX1645B changes its operation depending on the voltages at DCIN, BATT, V DD, important operating states follow: • AC Present. When DCIN is >7.5V, the battery is ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting The ChargerStatus() command returns information about thermistor impedance and the MAX1645B’s inter- nal state. The latched bits, THERMISTOR_HOT and ALARM_INHIBITED, are cleared whenever BATTERY_ a) Write-Word Format SLAVE S W ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Charger 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 Charger 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 7 — 8 — 9 — 10 HOT_STOP 11 — ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Charger with Input Current Limiting Table 4. ChargingCurrent()* BIT NAME 0 — 1 — 2 — 3 — 4 — 5 — 6 Charge Current, DACI 0 7 Charge Current, DACI 1 8 Charge Current, ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting Table 5. ChargingVoltage()* PIN BIT NAME 0 — 1 — 2 — 3 — 4 Charge Voltage, DACV 0 5 Charge Voltage, DACV 1 6 Charge Voltage, DACV 2 7 ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Figure 7. ChargingVoltage() Code to Voltage Mapping (the voltage-regulation-loop set point) and the ChargingVoltage() ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Charger with Input Current Limiting Interrupts and Alert Response Address The MAX1645B requests an interrupt by pulling the INT pin low. An interrupt is normally requested when there is a change in the state of ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting RESET IMAX 3.0V CCMP IMIN 0.25V ZCMP 0.1V CONTROL CCS CCI CCV * * * OPTIONAL Figure 8. DC-to-DC Converter Functional Diagram ______________________________________________________________________________________ 10ms S BST MAX1645B ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting Load and Source Switch Drivers The MAX1645B can drive two P-channel MOSFETs to eliminate voltage drops across the Schottky diodes, which are normally used to switch the load current from ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 Smart Battery Charger Types Two types of smart battery chargers ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting V CC +12V, -12V SYSTEM HOST (SMBus HOST) CRITICAL EVENTS BATTERY DATA/STATUS REQUESTS Figure 11. Typical System Using Multiple Smart Batteries Table 8. Smart Battery Charger Type by SMBus Mode ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting signal-level diode, such as the 1N4148. This diode provides the supply current to the high-side MOSFET driver. The P-channel MOSFET P2 delivers the current to the load ...
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Advanced Chemistry-Independent, Level 2 Battery Charger 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 compensation capacitor C10, C11 compensation capacitors C13 ...
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Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting • Minimize ground trace lengths in the high-current paths. • Minimize other trace lengths in the high-current paths: • Use >5mm-wide traces. • Connect C1 and C2 to high-side MOSFET ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. 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 32 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...