LT1947

2

1947fa

SW1, SW2 Voltage .................................................. 36V

ORDER PART

NUMBER

MSE PART MARKING

LTBQW

LT1947EMSE

(Note 1)

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

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

Order Options Tape and Reel: Add #TR, Lead Free: Add #PBF, Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

FB1, FB2 .................................................................... 3V

SHDN ......................................................................... 8V

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

1

2

3

4

5

FB1

FB2

SW1

GND

10

9

8

7

6

SHDN

SW2

TOP VIEW

MS PACKAGE

10-LEAD PLASTIC MSOP

ORDER PART

NUMBER

MS PART MARKING

LTUE

LT1947EMS

1

2

3

4

5

FB1

FB2

SW1

GND

10

9

8

7

6

SHDN

SW2

TOP VIEW

11

MSE PACKAGE

10-LEAD PLASTIC MSOP

EXPOSED PAD (PIN 11) IS GND

MUST BE SOLDERED TO PCB

The

ELECTRICAL CHARACTERISTICS

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

2.7

8

V

Supply Current

SHDN = 2.4V

9.5

12.5

mA

SHDN = 0V

1

µA

FB1 Voltage

1.240

1.26

1.280

V

●

1.225

1.295

V

FB2 Voltage

1.225

1.26

1.295

V

●

1.210

1.310

V

Reference Line Regulation

0.01

0.05

%/V