LTC3676/LTC3676-1 Power Management Solution for Application Processors FeaTures

LTC3676/LTC3676-1

Typical applicaTion

Sequenced Power for High Performance Processor and DDR Memory Using LTC3375 Parallelable Buck Converters

V

TT

0.75V

1.5A

IO18

1.8V

1.5A

SOC

1.35V

2.5A

V

DDHIGH

3V

2.5A

V

IN

5V

POWER GOOD

FROM V

IN

SUPPLY

1.5µH

47µF

215k

10pF

47µF

47µF

294k

200k

174k

200k

47µF

634k

200k

1.2V

300mA

IO18

1.5µH

10pF

1µH

10pF

1µH

10pF

1µF

SW2

FB_B2

SW3

FB_B3

SW4

FB_B4

LDO4

22µF

22µF

22µF

PV

IN4

PWR_ON

PV

IN3

SW1

PV

IN2

PV

IN1

V

IN

LDO1

FB_B1

FB_L1

VIN_L4

LTC3676-1

VIN_L2

LDO2

FB_L2

VIN_L3

LDO3

RSTO

IRQ

PGOOD

WAKE

22µF

634k

200k

576k

200k

1µF

1µF

1µF

V

RTC

3V

25mA

IO33

1µF

2.8V

300mA

10µF

10µF

3.3V

21.5k

V

IN1

V

SHNT

V

CC

V

IN2

V

IN3

1Ω

10µF

1.02M

576k

FBV

CC

10µF

10µF

0.01µF

RT

PB

CT

10µF

10µF

10µF

10µF

V

IN4

V

IN5

V

IN6

V

IN7

LTC3375

FB1

FB2

FB3

FB4

SW5

V

IN8

SW1

SW2

SW3

SW4

FB5

IO33

1µF

IO18ANALOG

1.8V

300mA

SYNC

EN2

EN3

EN4

EN7

EN8

ON

WDO

IRQ

RST

KILL

SW6

SW7

SW8

FB6

FB7

FB8

EN1

EN5

EN6

VTTR

750mV

±10mA

EN_B1

EN_B2

EN_B3

EN_B4

EN_L3

EN_L2

VDDQIN

VTTR

GND

DV

DD

ON

SDA

SCL

VSTB

MICROPROCESSOR

CONTROL

4.7k

4.7k

SDA

SCL

WDI

TEMP

GND

2.2µH

174k

200k

100µF

ARM

1.35V

4A

2.2µH

2.2µH

715k

200k

22µF

I033

3.3V

1A

DRAM

1.5V

3A

68µF

215k

200k

3676 TA04

relaTeD parTs

PART

NUMBER DESCRIPTION

LTC3101 1.8V to USB, Multioutput DC/

DC Converter with Low Loss USB

Power Controller

LTC3375

LTC3589/

LTC3589-1/

LTC3589-2

8-Channel Programmable,

Parallelable 1A Buck DC/DCs

8-Output Regulator with

Sequencing and I

2

C

LTC3586/

LTC3586-1

38

Switching USB Power Manager

PMIC with Li-Ion/Polymer Charger

COMMENTS

Seamless Transition Between Multiple Input Power Sources, V

IN

Converter V

OUT

V

OUT

QFN Package

Range: 1.5V to 5.25V, 3.3V

: 0.6V to V

IN

OUT

at 800mA for V

IN

Range: 1.8V to 5.5V, Buck-Boost

≥ 3V, Dual 350mA Buck Regulators,

, 38μA Quiescent Current in Burst Mode Operation, 24-Lead 4mm  4mm  0.75mm

8-Channel Independent Step-Down DC/DCs. Master Slave Configurable for Up to 4A per Output Channel with a Single Inductor, Die Temperature Monitor Output, 48-Lead 7mm

 7mm QFN Package

Triple I

2

C Adjustable High Efficiency Step-Down DC/DC Converters: 1.6A, 1A, 1A. High Efficiency 1.2A

Buck-Boost DC/DC Converter. Triple 250mA LDO Regulators. Pushbutton ON/OFF Control with System

Reset. Flexible Pin-Strap Sequencing Operation. I

2

C and Independent Enable Control Pins, DVS and

Slew Rate Control, 40-Lead 6mm  6mm  0.75mm QFN Package

Complete Multifunction PMIC: Switching Power Manager, 1A Buck-Boost + 2 Bucks + Boost + LDO,

4mm  6mm QFN-38 Package, LTC3586-1 Version Has 4.1V V

FLOAT

.

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900

●

FAX: (408) 434-0507

●

For more information www.linear.com/LTC3676

3676fd

LT 0515 REV D • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 2013