MAX15026BETV datasheet(8/23 Pages) MAXIM

Part #	MAX15026BETV

Description	Low-Cost, Small, 4.5V to 28V Wide Operating Range, DC-DC Synchronous Buck Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

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8 / 23 page

Low-Cost, Small, 4.5V to 28V Wide Operating

Range, DC-DC Synchronous Buck Controller

8

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Functional Diagram

OSCILLATOR

DC-DC

AND

OSCILLATOR

ENABLE

LOGIC

VREF

RT

EN

ENABLE

COMPARATOR

OSC_ENABLE

BANDGAP

OK

GENERATOR

VCC

UVLO

DRV

UVLO

THERMAL

SHUTDOWN

AND ILIM

CURRENT

GEN

IN

UVLO

BGAP_OK

EN_INT

VL_OK

VDRV_OK

SHUTDOWN

VIN_OK

VREF

VIN_OK

IBIAS

VBGAP

BGAP_OK

VDRV

VIN_OK

VBGAP

LIM

IN

VCC

INTERNAL

VOLTAGE

REGULATOR

MAIN

BIAS

CURRENT

GENERATOR

VREF = 0.6V

VBGAP = 1.24V

BANDGAP

REFERENCE

CK

ENABLE

gM

SOFT-START/

SOFT-STOP

LOGIC AND

HICCUP LOGIC

VREF

HICCUP

CK

ENABLE

DH_DL_ENABLE

VREF

CK

DH_DL_ENABLE

HICCUP

TIMEOUT

FB1

DAC_VREF

PWM

COMPARATOR

RAMP

GENERATOR

SINK

CURRENT-LIMIT

COMPARATOR

PGOOD

COMPARATOR

VALLEY

CURRENT-LIMIT

COMPARATOR

PWM

CONTROL

LOGIC

BOOST

DRIVER

HIGH-

SIDE

DRIVER

LOW-

SIDE

DRIVER

RAMP

GATEP

HICCUP TIMEOUT

HICCUP

LIM/20

LIM/10

COMP

BST

DH

LX

DRV

DL

GND

FB

PGOOD

GND

MAX15026

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MAX15026BETV Datasheet(PDF) 8 Page - Maxim Integrated Products

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