LT3972

2

3972f

ELECTRICAL CHARACTERISTICS

BOOST Pin Voltage ...................................................56V

BOOST Pin Above SW Pin.........................................30V

PG, BD, SYNC Voltage ..............................................30V

(Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

●

3

3.6

V

●

33

35

37

V

0.01

0.5

μA

●

30

65

μA

120

160

μA

Quiescent Current from BD

0.01

0.5

μA

noted. (Note 2)

Operating Junction Temperature Range (Note 2)

LT3972E.............................................– 40°C to 125°C

LT3972I..............................................– 40°C to 125°C

Storage Temperature Range...................–65°C to 150°C

Lead Temperature (Soldering, 10 sec)

(MSE Only) ....................................................... 300°C

TOP VIEW

DD PACKAGE

10-LEAD (3mm

3mm) PLASTIC DFN

10

9

6

7

8

4

5

3

11

2

1

RT

FB

PG

SYNC

BD

BOOST

SW

RUN/SS

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

1

2

3

4

5

BD

BOOST

SW

RUN/SS

10

9

8

7

6

RT

FB

PG

SYNC

TOP VIEW

MSE PACKAGE

10-LEAD PLASTIC MSOP

11

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

PIN CONFIGURATION

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3972EDD#PBF

LT3972EDD#TRPBF

LDXR

10-Lead (3mm

× 3mm) Plastic DFN

–40°C to 125°C

LT3972IDD#PBF

LT3972IDD#TRPBF

LDXR

10-Lead (3mm

× 3mm) Plastic DFN

–40°C to 125°C

LT3972EMSE#PBF

LT3972EMSE#TRPBF

LTDXS

10-Lead Plastic MSOP

–40°C to 125°C

LT3972IMSE#PBF

LT3972IMSE#TRPBF

LTDXS

10-Lead Plastic MSOP

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

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

ABSOLUTE MAXIMUM RATINGS