LTC4000 Datasheet, PDF (11/40 Pages) Linear Technology – High Voltage High Current Controller for Battery Charging and Power Management

LTC4000
Pin Functions (QFN/SSOP)
CC (Pin 25/Pin 21): Converter Compensation Pin. Connect
an R-C network from this pin to the ITH pin to provide a
suitable loop compensation for the converter used. Refer
to the Applications Information section for discussion and
procedure on choosing an appropriate R-C network for a
particular DC/DC converter.
CLN (Pin 26/Pin 22): Input Current Sense Negative Input.
Connect a sense resistor between this pin and the IN pin.
The LTC4000 senses the voltage across this sense resis-
tor and regulates it to a voltage equal to 1/20th (typical)
of the voltage set at the IL pin. Tie this pin to the IN pin if
no input current limit is desired. Refer to the Applications
Information section for complete details.
IN (Pin 27/Pin 23): Input Supply Voltage: 3V to 60V.
Supplies power to the internal circuitry and the BIAS pin.
Connect the power source to the downstream system
and the battery charger to this pin. This pin is also the
positive sense pin for the input current limit. Connect a
sense resistor between this pin and the CLN pin. Tie this
pin to CLN if no input current limit is desired. A local 0.1µF
bypass capacitor to ground is recommended on this pin.
4000f
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