LT1777C View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LT1777C

Low Noise Step-Down Switching Regulator

Linear Technology 

1 2 3 4 5 6 7 8 9 10 Next

BLOCK DIAGRA

LT1777

4 VCC

SHDN

3

BIAS

SYNC

12

OSC

SGND

7

VC

14

FB

13

VBG

VB

VBG

LOGIC

SWDR

SWON

FEEDBACK

AMP

gm

R1

I I2

VIN

10

RSENSE

ICOMP

– dV/dt

LIMITER

Q2

I I1

Q1

VSW

6

± dI/dt

LIMITER

1777 BD

VD

5

OUTPUT STAGE SI PLIFIED SCHE ATIC

C1

Q2

Q3

R1

Q4

R2

Q6

I1 I

SWITCH ON

SIGNAL

Q5

VIN

Q1

VSW

LSENSE

R3

LMAIN

+

VOUT

R4 VD

NOTE: R3 = R4

1777 SS

7

Share Link: