LTC1709-7 datasheet(8/24 Pages) LINER

Part #	LTC1709-7

Description	Wide Operating Range, No RSENSE Step-Down Controller

Download	24 Pages

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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8 / 24 page

8

LTC1778/LTC1778-1

1778fb

FU CTIO AL DIAGRA

1.4V

0.7V

VRNG

3

+

–

+

–

+

–

+

7 ION

VON**

0.7V

2

2.4V

4 FCB

9 EXTVCC

10 VIN

1µA

RON

VVON

IION

tON =

(10pF)

R

SQ

20k

ICMP

IREV

×

Q6

1V

3.3µA

SHDN

SWITCH

LOGIC

BG

ON

FCNT

F

0.8V

–

+

4.7V

OV

1

240k

Q1

Q2

Q3

0.8V

0.6V

ITH

RC

CC1

EA

SS

0.8V

LTC1778

LTC1778-1

*

**

Q4

+

–

×4

Q5

5

RUN/SS CSS

1

1778 FD

SGND

R2

R1

6

8

RUN

SHDN

12

PGND

13

PGOOD*

VFB

INTVCC

11

SW

14

TG

CB

VIN

CIN

15

BOOST

16

–

+

–

+

UV

0.74V

OV

0.86V

CVCC

VOUT

M2

M1

L1

COUT

+

0.8V

REF

5V

REG

1.2µA

6V

DB

ITHB

1

2

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LTC1709-7 Datasheet(PDF) 8 Page - Linear Technology

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