LTC4000 データシートの表示（PDF） - Linear Technology

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LTC4000

High Voltage High Current Controller for Battery Charging and Power Management

Linear Technology 

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

11

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