LTC4221IGN データシートの表示（PDF） - Linear Technology

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LTC4221IGN

Dual Hot Swap Controller/Power Sequencer with Dual Speed, Dual Level Fault Protection

Linear Technology 

LTC4221

BLOCK DIAGRA

ON1 1

ON2 16

VCC1

OSCILLATOR

VCC1

VCC1

105μA

CHARGE

PUMP 1

CHARGE

PUMP 2

CPO1

CPO2

VCC1

VCC2

0.821V

0.4V

–

+ ON1

COMPARATOR

–

0.821V + ON2

COMPARATOR

UVLO

VCC1

VCC1

20μA

1.9μA

9 TIMER

FILTER 8

FAULT 7

VCC1 2

SENSE1 3

FB1 5

VCC2 15

SENSE2 14

FB2 12

10

1.8μA

VCC1

3.8μA

1.24V

+

FTRHI

– FILTER

COMPARATOR

SYSTEM

CONTROL

LOGIC

TMRHI

TMRHI

COMPARATOR

TMRLO

1.234V

0.4V

0.816V

+

FAULT_LO

–

FAULT

COMPARATOR

TMRLO

COMPARATOR

CPO1

12V

9.5μA

VCC1

+– 9mV TO 25mV

VCC1

+– 100mV

+

SLOWHI1

– SLOW

COMPARATOR 1

+

FASTHI1

– FAST

COMPARATOR 1

+

CHANNEL 1

CONTROL

LOGIC

0.617V

0.822V

+

–

OV1

COMPARATOR

– FB1

COMPARATOR

VCC1

CUR_LIMIT1

FPD1

GATELO1

0.4V

GATELO1

COMPARATOR

CPO2

12V

9.5μA

VCC2

+– 9mV TO 25mV

VCC2

+– 100mV

VCC2

+

SLOWHI2

CUR_LIMIT2

– SLOW

COMPARATOR 2

+

FASTHI2

– FAST

CHANNEL 2

CONTROL

LOGIC

FPD2

COMPARATOR 2

+

GATELO2

0.4V

0.617V

0.822V

+

–

OV2

COMPARATOR

GATELO2

COMPARATOR

– FB2

COMPARATOR

10 GND

4 GATE1

26V

100μA

6 PWRGD1

CHANNEL ONE

13 GATE2

26V

100μA

11 PWRGD2

CHANNEL TWO

4221 BD

4221fa

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