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LTC4097 Datasheet(PDF) 9 Page - Linear Technology |
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LTC4097 Datasheet(HTML) 9 Page - Linear Technology |
9 / 20 page LTC4097 9 4097f PIN FUNCTIONS IUSB (Pin 9): Charge Current Program for USB Power. The charge current is set by connecting a resistor, RIUSB, to ground. When charging in constant current mode, this pin servos to 1V. The voltage on this pin can be used to measure the battery current delivered from the USBIN input using the following formula: I V R BAT IUSB IUSB = • 1000 IDC (Pin 10): Charge Current Program for Wall Adapter Power. The charge current is set by connecting a resistor, RIDC, to ground. When charging in constant current mode, this pin servos to 1V. The voltage on this pin can be used to measure the battery current delivered from the DCIN input using the following formula: I V R BAT IDC IDC = •1000 GND (Pin 11): Ground. BAT (Pin 12): Charger Output. This pin provides charge current to the battery and regulates the final float voltage to 4.2V. Exposed Pad (Pin 13): Ground. The exposed backside of the package is ground and must be soldered to the PC board ground for electrical connection and maximum heat transfer. |
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