LT1176 查看數據表（PDF） - Linear Technology

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LT1176

Step-Down Switching Regulator

Linear Technology 

LT1176/LT1176-5

BLOCK DIAGRAM

INPUT SUPPLY

10µA

0.3V

+

µPOWER

SHUTDOWN

–

6V

REGULATOR

AND BIAS

6V TO ALL

CIRCUITRY

2.35V

+

CURRENT LIMIT

SHUTDOWN

–

ILIM

SHUTDOWN

320µA

CURRENT LIMIT

COMP

C2

4.5V 10k

500Ω

0.16Ω

OUTPUT

VOLTAGE

MONITOR

FREQ SHIFT

100kHz

OSCILLATOR

SYNC

3VP-P

VIN

R

S

R/S

LATCH

Q

G1

R

STATUS

2.21V

+

A1

ERROR

– AMP

Z

ANALOG

X MULTIPLIER

XYZ

Y

+

C1

–

PULSE WIDTH

COMPARATOR

2.8k

FB/SENSE

2.2k*

VC 24V (EQUIVALENT)

*CONNECTED ON 5V VERSION ONLY

400Ω

SWITCH

OUTPUT

(VSW)

11765 BD

11765fb

5

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