MAX745EAP Maxim Integrated Products, MAX745EAP Datasheet
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MAX745EAP
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MAX745EAP Summary of contents
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... Uses Low-Cost Set Resistors and N-Channel Switch 24V Input 18V Maximum Battery Voltage o 300kHz Pulse-Width Modulated (PWM) Operation Low-Noise, Small Components o Stand-Alone Operation—No Microcontroller Needed PART MAX745C/D MAX745EAP *Dice are tested at T Pin Configuration appears at end of data sheet. DCIN VL BST CELL0 DHI CELL1 LX ...
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Switch-Mode Lithium-Ion Battery Charger ABSOLUTE MAXIMUM RATINGS DCIN to GND ............................................................-0.3V to 26V BST, DHI to GND ......................................................-0.3V to 30V BST to LX ....................................................................-0. DHI to LX............................................(LX - 0.3V) to (BST + 0.3V GND ................................................-0.3V to ...
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ELECTRICAL CHARACTERISTICS (continued 18V 8.4V 0°C to +85°C. Typical values are at T DCIN BATT A PARAMETER ERROR AMPLIFIERS GMV Amplifier Transconductance GMI Amplifier Transconductance GMV Amplifier Output Current GMI Amplifier Output Current CCI ...
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Switch-Mode Lithium-Ion Battery Charger __________________________________________Typical Operating Characteristics (T = +25° 18V 4.2V, CELL0 = CELL1 = GND DCIN BATT noted.) BATTERY VOLTAGE vs. CHARGING CURRENT 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 R1 ...
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Description PIN NAME Current-Sense Amplifier’s Analog Current-Source Output. See the Monitoring Charge Current section for a 1 IBAT detailed description. 2 DCIN Charger Input Voltage. Bypass DCIN with a 0.1µF capacitor Chip Power Supply. Output of the ...
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Switch-Mode Lithium-Ion Battery Charger the voltage limit is 4.2V. Table 1 defines the REF battery cell count. The battery limit voltage is set by the following: ...
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To set currents below full scale without changing R1, adjust the voltage at SETI according to the follow- ing formula SETI CHG FS A capacitor at CCI sets the current-feedback loop’s dominant pole. While ...
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Switch-Mode Lithium-Ion Battery Charger MOSFET Drivers The MAX745 drives external N-channel MOSFETs to switch the input source generating the battery voltage or current. Since the high-side N-channel MOSFET’s gate must be driven to a voltage higher than the input source ...