LT3742

2

3742f

ABSOLUTE MAXIMUM RATINGS

UVLO Voltage............................................................30V

PG1, PG2 Voltage .....................................................30V

SWB, BIAS Voltage ...................................................40V

RUN/SS1, RUN/SS2 Voltage .......................................6V

FB1, FB2 Voltage.........................................................6V

Junction Temperature ........................................... 125°C

Operating Junction Temperature Range

(Note 2).................................................. –40°C to 125°C

Storage Temperature Range................... –65°C to 125°C

(Note 1)

PIN CONFIGURATION

24 23 22 21 20 19

7

8

9

TOP VIEW

25

UF PACKAGE

24-LEAD (4mm

× 4mm) PLASTIC QFN

10 11 12

6

5

4

3

2

1

13

14

15

16

17

18

G1

UVLO

BIAS

SWB

G2

PG1

RUN/SS1

RUN/SS2

PG2

EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3742EUF#PBF

LT3742EUF#TRPBF

3742

24-Lead (4mm

× 4mm) Plastic QFN

–40°C to 125°C (Note 2)

Consult LTC Marketing for parts specified with wider operating temperature ranges.

Consult LTC Marketing for information on non-standard lead based finish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operating Input Voltage

●

3.5

4.0

V

Quiescent Current

5.0

7.0

mA

Shutdown Current

20

35

μA

UVLO Pin Threshold

UVLO Pin Voltage Rising

●

1.20

1.24

1.28

V

UVLO Pin Hysteresis Current

1.8

2.7

4

μA

RUN/SS Pin Threshold

0.2

0.6

V

RUN/SS Pin Charge Current

0.5

0.9

1.5

μA

FB Pin Voltage

●

0.788

0.800

0.812

V

FB Pin Voltage Line Regulation

0.01

%/V