LTC4449 datasheet(12/48 Pages) AD

Part #	LTC4449

Description	Quad-Phase, Synchronous Bidirectional Buck or Boost Controller

PDF	48 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

Logo

12 / 48 page

LTC7872

Rev. 0

For more information www.analog.com

BLOCK DIAGRAM Functional Diagram Shows Two Channels Only.

–

1.32V

1.08V

BUCK_EN

7872 BD

DRIVER

PWM1

VLOW

VHIGH

PWMEN

DRIVER

–

CLK

SNSA1+

SNSD1+

SNS1–

–

+–

SNSA2+

SNSD2+

SNS2–

–

+–

ICMP1

ICMP2

1.25V + SETCUR

|1.25V – SETCUR|

VFBLOW

VFBHIGH

CONTROL

LOGIC

IDAC

SPI INTERFACE

IDAC

SETCUR

VHIGH_UV

VHIGH_OV

OVHIGH

UVHIGH

VREF

EXTVCC

VHIGH

PWM2

LOGIC 2

PGOOD

CSB

BUCK

BOOST_EN

BUCK_EN

SCLK SDI

SDO

IREV1,2

ICMP1,2

VFLD

BUCK_EN

VREF

OVLOW

MODE

VREF

VLOW_OV

VHIGH

VFBLOW

ITHLOW

SETCUR

IMON

VLOW

SNSA1+

SNS1–

SNSD1+

SNSA2+

SNS2–

SNSD2+

1.2V

BUCK_EN

VFBLOW

1.2V

ITHHIGH

SYNC

BOOST_EN

VFBHIGH

FREQ

CLKOUT

1.2V

–

EA_VHIGH

EA_VLOW

INTERNAL

LDO REG

EXTVCC

LDO REG

5V LDO

PLL/OSC

PHASE

DETECTOR

VFBLOW

VFBHIGH

FAULT

VLOW_OV

VHIGH_OV

VHIGH_UV

–

SGND

DRVCC

EXTVCC

DRVSET

1µA

VHIGH

20µA

100k

CLK

LOGIC 1

LTC4449 Datasheet(PDF) 12 Page - Analog Devices

LTC4449 Datasheet(HTML) 12 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Datasheet Download

Link URL