LTC3556EUFD-PBF View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC3556EUFD-PBF

High Effi ciency USB Power Manager with Dual Buck and Buck-Boost DC/DCs

Linear Technology 

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BLOCK DIAGRAM

LTC3556

VBUS 25

CLPROG 2

NTC 3

CHRG 21

PGOODALL 15

SEQ 27

ENALL 28

DVCC 10

SDA 16

SCL 13

2.25MHz

PowerPath

SWITCHING

REGULATOR

SUSPEND

LDO

500μA

–

+

BATTERY

TEMPERATURE

MONITOR

1.188V

CHARGE

STATUS

4

3.3V LDO

26 SW

1 LDO3V3

24 VOUT

CC/CV

CHARGER

0+.3–V

IDEAL

+–

+

–

15mV

22 GATE

23 BAT

3.6V

20 PROG

EN1

400mA

2.25MHz

D/A

(BUCK)

SWITCHING

REGULATOR 1

5 VIN1

4 SW1

6 FB1

POWER

GOOD

MASTER LOGIC

AND

SEQUENCER

EN2

400mA

2.25MHz

(BUCK)

SWITCHING

REGULATOR 2

EN3

D/A

4

1A

2.25MHz

(BUCK-BOOST)

SWITCHING

REGULATOR 3

I2C PORT

18 VIN2

19 SW2

17 FB2

11 VIN3

A

9 SWAB3

B

12 VOUT3

D

14 SWCD3

C

7 FB3

8 VC3

29

GND

3556 BD

3556f

13

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