LLTC4100EG 查看數據表（PDF） - Linear Technology

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LLTC4100EG

Smart Battery Charger Controller

Linear Technology 

Block Diagram

LTC4100

VBAT

R4

100Ω

C4

0.01µF

VSET 18

C5, 0.1µF

GND

12

SYSTEM

LOAD

20µF

L1

CSP

Q2

CLP

TGATE 1

D1

Q3

R1

RCL

C9

Q1

VIN

C1, 0.1µF

BGATE 3

PGND 2

CLN

23

CLP

24

DCIN

5

INFET

4

CHGEN 6

SMBALERT 7

11-BIT

VDAC

DCIN

1.28V

OSCILLATOR

WATCHDOG

DETECT tON

1.19V

0V

– gm = 1m

EA

+

S

QR

PWM

LOGIC

100mV

gm = 1.5m

+

CL1

–

5.8V

CLP

VDD

10µA

TO HOST AND BATTERY

1.13k

54.9k

10k

SDA 8

SCL 9

16

THA

THB 15

SMBus

INTERFACE

AND CONTROL

THERMISTER

INTERFACE

+

CA1

+

BUFFERED

÷5 ITH

–+

ICMP

3k

11.67µA

3k

9k

BAT

22

RSENSE

CSP

21

CSP

VBAT

20µF

IREV

17mV

CA2

gm = 1m

1.19V

10-BIT

IDAC

1.2V

IDC

20

C8

0.068µF

19 ITH

R5, 6.04k

C6, 0.12µF

10 ACP

11 DCDIV

R11

VIN

R10

C7

0.0015µF

17 VDD TO SMBUS

POWER SUPPLY

LIMIT

DECODER

13 ILIM

14 VLIM

RVLIM

RILIM

Figure 2

For more information www.linear.com/LTC4100

4100fc

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