LT1521/LT1521-3
LT1521-3.3/LT1521-5
W W U W
ABSOLUTE MAXIMUM RATINGS (Note 1)
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.
U
W U
PACKAGE/ORDER INFORMATION
TOP VIEW
FRONT VIEW
TOP VIEW
OUT
SENSE/ADJ*
GND
1
2
3
4
8
7
6
5
IN
1
2
3
OUT
GND
IN
OUT
SENSE/ADJ*
NC
1
2
3
4
8 IN
7 NC
6 NC
5 SHDN
GND
GND
SHDN
TAB IS
GND
GND
NC
MS8 PACKAGE
8-LEAD PLASTIC MSOP
S8 PACKAGE
8-LEAD PLASTIC SO
ST PACKAGE
3-LEAD PLASTIC SOT-223
*PIN 2 = SENSE FOR LT1521-3/
LT1521-3.3/LT1521-5
PIN 2 = ADJ FOR LT1521
*PIN 2 = SENSE FOR LT1521-3/LT1521-3.3/LT1521-5
= ADJ FOR LT1521
TJMAX = 125°C, θJA = 70°C/ W
SEE THE APPLICATIONS INFORMATION SECTION
TJMAX = 125°C, θJA = 50°C/ W
SEE THE APPLICATIONS INFORMATION SECTION
TJMAX = 125°C, θJA = 125°C/ W
ORDER PART NUMBER
ORDER PART NUMBER
ORDER PART NUMBER
LT1521CST-3
LT1521CST-3.3
LT1521CST-5
LT1521IST-3
LT1521IST-3.3
LT1521IST-5
LT1521CS8
LT1521CMS8
LT1521CS8-3
LT1521CS8-3.3
LT1521CS8-5
LT1521IS8
LT1521CMS8-3
LT1521CMS8-3.3
LT1521CMS8-5
LT1521IS8-3
LT1521IS8-3.3
LT1521IS8-5
MS8 PART MARKING
ST PART MARKING
S8 PART MARKING
LTEZ
LTFB
LTDU
LTFA
1521
15213
152133
15215
1521I
1521I3
1521I33
1521I5
15213
152133
15215
1521I3
1521I33
1521I5
Consult factory for Military grade parts.
2
Linear [ Linear ]
