ISL8204M データシートの表示（PDF） - Intersil

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ISL8204M

Complete High Efficiency DC/DC Power Module

Intersil 

ISL8204M, ISL8206M

Pin Descriptions (Continued)

PIN

13

14

SYMBOL

DESCRIPTION

COMP/EN

This is the multiplexed pin of the ISL8204M, ISL8206M. During soft-start and normal converter

operation, this pin represents the output of the error amplifier. Use COMP/EN in combination with the

FB pin to compensate for the voltage control feedback loop of the converter. Pulling COMP/EN low

(VENDIS = 0.4V nominal) will disable (shut-down) the controller, which causes the oscillator to stop,

and the high-side gate and low-side gate of the MOSFETs outputs to be held low. The external pull-

down device will initially need to overcome a maximum of 5mA of COMP/EN output current. However,

once the controller is disabled, the COMP/EN output will also be disabled, thus only a 20µA current

source will continue to draw current. Range: 0V to 5V.

FB

The FB pin is the output voltage adjustment of the ISL8204M, ISL8206M. It will regulate to 0.6V at the FB

pin with respect to the PGND pin. The ISL8204M, ISL8206M has an integrated voltage dividing resistor. This

is a precision 9.76kΩ resistor (RFB-TI) between the VOUT and FB pins. Different output voltages can be

programmed with additional resistors between FB to PGND. Range: 0.6V.

4

FN6999.1

February 25, 2010

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