Rainbow-electronics MAX15001 Manual do Utilizador descarregar pdf (Página 17)

MAX15000/MAX15001

Current-Mode PWM Controllers with

Programmable Switching Frequency

______________________________________________________________________________________ 17

Selector Guide

*The MAX15001 does not have an internal bootstrap UVLO. The

MAX15001 starts operation as long as V

is higher than 9.5V

and UVLO/EN is higher than 1.23V.

PART

BOOTSTRAP

UVLO

STARTUP

VOLTAGE (V)

MAX DUTY

CYCLE (%)

MAX15000A Yes 22 50

MAX15000B Yes 22 75

MAX15001A*

No 9.5 50

MAX15001B*

No 9.5 75

Chip Information

PROCESS: BiCMOS

DRIVER

NDRV

GND

COMP

UVLO/EN

CLAMP

26.1V

*MAX15000 ONLY

UFLG

MAX15000

MAX15001

ERROR

AMP

CPWM

UVLO

OSCILLATOR

ILIM

REG_OK

REGULATOR

(INTERNAL 5.25V

SUPPLY)

1.23V

1.17V

1.4V

DIGITAL

SOFT-START

REFERENCE

1.23V

210µs

DELAY

BOOTSTRAP UVLO

21.6V

9.74V

Functional Diagram

1 2 ... 12 13 14 15 16 17 18

MAX15000/MAX15001 1

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