Datasheet

2
LT1521/LT1521-3
LT1521-3.3/LT1521-5
1521335fb
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
3
2
1
FRONT VIEW
TAB IS
GND
OUT
GND
IN
ST PACKAGE
3-LEAD PLASTIC SOT-223
T
JMAX
= 125°C, θ
JA
= 50°C/W
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
T
JMAX
= 125°C, θ
JA
= 70°C/W
SEE THE APPLICATIONS INFORMATION SECTION
ORDER PART NUMBER
T
JMAX
= 125°C, θ
JA
= 125°C/W
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.