MAX14871 datasheet(4/16 Pages) MAXIM

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Evaluates: MAX14871

MAX14871 Evaluation Kit

INPUTS

OPERATING MODE

VREF

MODE

VSNS

< 0.2V

< 0.1V

Normal PWM Operation. No current regulation.

< 0.2V

VMODE < 0.5V

> 0.1V

Current regulation based on 15μs (typ) fixed off-time control

with fast decay using internal VREF.

< 0.2V

0.5V < VMODE < 1V

> 0.1V

Current regulation based on 25% current ripple fast decay

using internal VREF.

< 0.2V

VMODE > 1.5V

> 0.1V

Current regulation based on 15μs (typ) fixed off-time control

with slow decay using internal VREF.

> 0.4V

< VVREF/10

Normal PWM Operation. No current regulation.

> 0.4V

VMODE < 0.5V

> VVREF/10

Current regulation based on fixed TOFF-time control with fast

decay using external VREF.

> 0.4V

0.5V < VMODE < 1V

> VVREF/10

Current regulation based on 25% current ripple fast decay

using external VREF.

> 0.4V

VMODE > 1.5V

> VVREF/10

Current regulation based on fixed TOFF-time control with

slow decay using external VREF.

Table 2. Current Regulation Logic

X = Don’t care

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