2

LT1521/LT1521-3

LT1521-3.3/LT1521-5

1521335fb

3

2

1

FRONT VIEW

TAB IS

GND

OUT

GND

IN

ST PACKAGE

3-LEAD PLASTIC SOT-223

SEE THE APPLICATIONS INFORMATION SECTION

ORDER PART NUMBER

ORDER PART NUMBER

1

2

3

4

8

7

6

5

TOP VIEW

IN

GND

GND

SHDN

OUT

SENSE/ADJ*

GND

NC

S8 PACKAGE

8-LEAD PLASTIC SO

*PIN 2 = SENSE FOR LT1521-3/LT1521-3.3/LT1521-5

= ADJ FOR LT1521

SEE THE APPLICATIONS INFORMATION SECTION

ORDER PART NUMBER

1

2

3

4

OUT

SENSE/ADJ*

NC

GND

8

7

6

5

IN

NC

NC

SHDN

TOP VIEW

MS8 PACKAGE

8-LEAD PLASTIC MSOP

*PIN 2 = SENSE FOR LT1521-3/

LT1521-3.3/LT1521-5

PIN 2 = ADJ FOR LT1521

Input Voltage ......................................................

± 20V*

Output Pin Reverse Current .................................. 10mA

Adjust Pin Current ................................................ 10mA

Shutdown Pin Input Voltage (Note 1) .......... 6.5V, – 0.6V

Shutdown Pin Input Current (Note 1) ..................... 5mA

Output Short-Circuit Duration .......................... Indefinite

Storage Temperature Range ................. – 65

°C to 150°C

Operating Junction Temperature Range (Note 2)

Commercial ........................................... 0

°C to 125°C

Industrial ......................................... – 40

°C to 125°C

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

°C

*For applications requiring input voltage ratings greater than 20V, contact

the factory.

LT1521CMS8

LT1521CMS8-3

LT1521CMS8-3.3

LT1521CMS8-5

LT1521CS8

LT1521CS8-3

LT1521CS8-3.3

LT1521CS8-5

LT1521IS8

LT1521IS8-3

LT1521IS8-3.3

LT1521IS8-5

LT1521CST-3

LT1521CST-3.3

LT1521CST-5

LT1521IST-3

LT1521IST-3.3

LT1521IST-5

S8 PART MARKING

ST PART MARKING

MS8 PART MARKING

1521

15213

152133

15215

LTEZ

LTFB

LTDU

LTFA

1521I

1521I3

1521I33

1521I5

1521I3

1521I33

1521I5

15213

152133

15215

(Note 1)

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