7447797470 datasheet(3/32 Pages) AD

Numer części	7447797470

Szczegółowy opis	Dual 5 A, 20 V Synchronous Step-Down

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Producent	AD [Analog Devices]

Strona internetowa	http://www.analog.com

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3 / 32 page

Data Sheet

ADP2325

Rev. 0 | Page 3 of 32

FUNCTIONAL BLOCK DIAGRAM

Figure 3.

+

–

+

0.6V

ISS1

SS1

FB1

COMP1

Σ

AMP1

CONTROL

LOGIC

AND MOSFET

DRIVER WITH

ANTICROSS

PROTECTION

BST1

SW1

I1MAX

HICCUP

MODE

NFET1

VDRV

DL1

0.7V

0.54V

OVP

PGOOD1

PVIN1

UVLO

EN1

CURRENT-

LIMIT

SELECTION

OSCILLATOR

PGND

SCFG

SYNC

RT

CLK1

CLK2

SLOPE RAMP1

SLOPE RAMP2

5V REGULATOR

EN1_BUF

ADP2325

EN1_BUF

EN2_BUF

INTVCC

PVIN1

GND

MODE

MODE_BUF

SKIP MODE

THRESHOLD

MODE_BUF

SKIP

CMP1

SLOPE RAMP1

CLK1

–

+

VDRV

+

TRK1

+

–

+

–

1.2V

4µA

1µA

OCP

CMP1

+

–

+

–

+

–

+

–

DRIVER

BOOST

REGULATOR

+

–

+

0.6V

ISS2

SS2

FB2

COMP2

Σ

AMP2

CONTROL

LOGIC

AND MOSFET

DRIVER WITH

ANTICROSS

PROTECTION

BST2

SW2

I2MAX

HICCUP

MODE

NFET2

VDRV

DL2

0.7V

0.54V

OVP

PGOOD2

PVIN2

UVLO

EN2

CURRENT-

LIMIT

SELECTION

EN2_BUF

SKIP MODE

THRESHOLD

MODE_BUF

SKIP

CMP2

SLOPE RAMP2

CLK2

–

+

LOW-SIDE

CURRENT

SENSE

+

TRK2

+

–

+

–

1.2V

4µA

1µA

OCP

CMP2

+

–

+

–

+

–

+

–

DRIVER

BOOST

REGULATOR

ACS1

ACS2

LOW-SIDE

CURRENT

SENSE

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