LTC4090EDJC-5-TRPBF 데이터 시트보기 (PDF) - Linear Technology

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LTC4090EDJC-5-TRPBF

USB Power Manager with 2A High Voltage Bat-Track Buck Regulator

Linear Technology 

LTC4090/LTC4090-5

BLOCK DIAGRAM

HVIN

10

HVEN

10

RT1

RC

CC

10 RT

SYNC

10

10 VC

CF

INTERNAL

REFERENCE

SOFT-START

VC CLAMP

PG

10

RCLPROG

IN

10

IIN

1V +

1000

CLPROG

22

CL

–

HPWR 500mA/100mA

13

2µA

BOOST

+

IL

–

OSCILLATOR

200kHz - 2.4MHz

+

RQ

–

SQ

DRIVER

–

GM+

VSET

3.6V (LTC4090)

+

5V (LTC4090-5)

–

+–

350mV

(LTC4090)

+–

75mV (RISING)

25mV (FALLING)

+

2.8V

CURRENT

CONTROL

SOFT-START

ILIM

DIE

TEMP 105°C

CURRENT LIMIT

IN ILIM CNTL

ENABLE

–+

TA

IN OUT BAT

+

4.25V (RISING)

3.15V (FALLING)

–

OUT

CC/CV REGULATOR

CHARGER

ENABLE

30mV

IDEAL

DIODE

BAT

C2

Q1

SW

L1

D1

HVOUT

C1

HVPR

19

20mV –

+ EDA

OUT

21

GATE

21

BAT

21

RPROG

PROG

23

VNTC

15

10k

NTC

14

10k T

1V

CHG

–

TOO

COLD

+

–

TOO

HOT

+

+

0.1V –

NTC ENABLE

CHARGE CONTROL

ICHG

SOFT-START2

VOLTAGE DETECT

UVLO

NTCERR

CONTROL LOGIC

BAT UV

RECHRG

HOLD

RESET

GND

16

2µA

SUSP

11

0.25V

2.9V

BATTERY

UVLO

4.1V

RECHARGE

OSCILLATOR

CLK

COUNTER

STOP

TIMER

21

CHRG

18

CTIMER

EOC

C/10

4090 BD

For more information www.linear.com/LTC4090

4090fd

11

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