LTC1960CG Просмотр технического описания (PDF) - Linear Technology

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производитель

LTC1960CG

Dual Battery Charger/Selector with SPI Interface

Linear Technology 

LTC1960

BLOCK DIAGRAM (LTC1960CG Pin Numbers Shown)

DCIN

CHARGE

PUMP

ON

GCH1 34

SCH1 33

GCH2 35

ON

SCH2 36

BAT1 3

BAT2 2

VPLUS 1

VCC 28

GND 16

DCIN 29

VSET 13

VCC

REGULATOR

BGATE

OSCILLATOR

LOW DROP

DETECT

TON

BOOST 31

TGATE 32

SW 30

VCC

BGATE 27

PGND 26

GB1I GB1O

98

GB2I GB2O

11 10

GDCI GDCO

76

SWB1

DRIVER

SWB2

DRIVER

SWDC

DRIVER

SHORT CIRCUIT

AC_PRESENT

100mV

5 SCP

100Ω

4 SCN

17 DCDIV

CSN

CHGMON

400k

SCN

0.86V

SELECTOR

CONTROLLER

1.19V

12 LOPWR

CHARGE

SPI

INTERFACE

11

11-BIT ∆Σ

VOLTAGE DAC

10-BIT ∆Σ

CURRENT DAC

0V

21 MOSI

20 MISO

19 SCK

18 SSB

15 ISET

CSP-CSN

3kΩ

gm = 1.4m

EA

0.8V +

PWM

LOGIC

S

Q

R

CHARGE

3k

CA1

3k

gm = 1.4m

CA2

0.8V

÷15 BUFFERED ITH

ICMP

–+

23 CSP

22 CSN

IREV

40mV

DCIN

CLP 24

100mV

+ gm = 0.4m

CL1

25

COMP1

0.75V

CHGMON

CLAMP

14

1960 BD

ITH

1960fb

10

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