LTC4097 データシートの表示（PDF） - Linear Technology
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LTC4097 Datasheet PDF : 20 Pages
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LTC4097
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:
IBAT
=
VIUSB
RIUSB
•
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:
IBAT
=
VIDC
RIDC
• 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.
4097f
9
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