LTC2926IUFD 查看數據表（PDF） - Linear Technology

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LTC2926IUFD

MOSFET-Controlled Power Supply Tracker

Linear Technology 

W

FU CTIO AL BLOCK DIAGRA

LTC2926

2.4V +

VCC –

UVLO

ON

+

0.6V –

0.5V +

–

+

1.23V –

DELAY

DELAY

RSGATE +

VCC + 4.9V –

RSGATE +

1.23V –

MGATE +

RAMP + 4.9V –

RAMP +

VCC –

SGATE1 +

VCC + 4.9V –

SGATE2 +

VCC + 4.9V –

D1

D2

TRACK2 0.8V +

–

TRACK1

RAMPBUF

1x

VCC

CLEAR/ARM

SIGNAL LATCH

R

CLR/ARM

SQ

FAULT LATCH

R

FAULT

SQ

FAST PULL-DOWN

VCC

8.5µA

FAULT

UVLO

UVLO

PGTMR HIGH

PGI LOW

VCC

10µA

+ 0.1V

–

+ 0.5V

–

PGTMR

1.23V

1.23V

10µA

CHARGE

PUMP

STATUS/PGI

CHARGE

PUMP

10µA

GATE UP

10µA

FAST

PULL-DOWN

CHARGE

PUMP

10µA

RSGATE UP

10µA

FAST

PULL-DOWN

MGATE

RSGATE

S1

S2

CHARGE

VCC

PUMP

SGATE2

10µA/30µA

VCC

0.8V +

UP/DOWN

–

FAST

10µA/30µA

PULL-DOWN

SGATE1

FB2

FB1

RAMP

GND

2926 BD

2926fa

9

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