Rainbow-electronics MAX15041 Manual do Utilizador descarregar pdf (Página 8)

MAX15041

Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM

Step-Down DC-DC Regulator with Internal Switches

8 _______________________________________________________________________________________

Simplified Block Diagram

ENABLE CONTROL

AND THERMAL

SHUTDOWN

CONTROL

LOGIC AND

SINK LIMIT

5V LDO

UVLO

COMPARATOR

CURRENT-SENSE/CURRENT-LIMIT

AMPLIFIER

BIAS

GENERATOR

0.65V

VOLTAGE

REFERENCE

STRONG PREBIAS

COMPARATOR

PWM

COMPARATOR

ERROR

AMPLIFIER

OSCILLATOR

MAX15041

PGND

BST

PGOOD

0.606V

5µA

0.560V RISING,

0.545V FALLING

POWER-GOOD

COMPARATOR

COMP

SGND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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Rainbow-electronics MAX15041 Manual do Utilizador Página 8