LT1577CS-ADJ/ADJ 데이터 시트보기 (PDF) - Linear Technology

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LT1577CS-ADJ/ADJ

Ultrafast Transient Response, Low Dropout Regulators Adjustable and Fixed

Linear Technology 

BLOCK DIAGRAM

I1

15µA

SW1

OR1

NORMALLY

OPEN

SHDN

I2

5µA

SW2

NORMALLY

CLOSED

R2

5k Q6

OR2

LT1575 Fixed Voltage

D1

+

D2

COMP1

–

100mV

HYSTERESIS

LT1575/LT1577

ILIM AMP

VTH1

50mV

IPOS

INEG

COMP4

VTH3

500mV

COMP2

VIN

START-UP

VREF

GND

OUT

R3*

R4*

*VOUT = (1 + R3/R4)VREF

1.21V

COMP3

VTH2

1V

Q7

I3

100µA

Q1

Q2

R1

50k

+

ERROR AMP

–

Q4

Q3

GATE

COMP

Q5

1575/77 BD2

9

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