LTC4080X 데이터 시트보기 (PDF) - Linear Technology

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LTC4080X

500mA Standalone Li-Ion Charger with Integrated 300mA Synchronous Buck in 3mm × 3mm DFN

Linear Technology 

LTC4080X

BLOCK DIAGRA

3

EN_CHRG

0.82V

REN

+

C3

–

PROG 0.1V

CHARGER

SHUTDOWN

MP3

X1

D1

6

CHRG

2.9V

BAT

4

PROG

RPROG

+

C2

–

5

ACPR

C1

PULSE

LOGIC

CA

–+

MP4

1V

BADBAT

VCC

C4

3.6V

2

VCC

–+

MA

CHARGER

ENABLE

MP1

X400

R1

D3

115°C

TA

D2

TDIE

1

BAT

VA

1.22V

R2

CHARGE

CONTROL

LOGIC

CHARGER

OSCILLATOR

COUNTER

9

EN_BUCK

0.82V

+

C6

–

8

MODE

0.82V

+

C7

–

C5

VBAT + 82mV

LINEAR BATTERY CHARGER

ENABLE BUCK

SYNCHRONOUS BUCK CONVERTER

PWM

CONTROL

AND DRIVE

MP2

10

SW

MN1

L1

VOUT

CPL R7

2.25MHz

BUCK

OSCILLATOR

7

ERROR

FB

AMP

0.8V

COUT

R8

11

GND

4080X BD

Figure 1. LTC4080X Block Diagram

4080Xf

10

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