LT1521 Linear Technology, LT1521 Datasheet - Page 2

• Manufacturer Part Number: LT1521
• Description: 300mA Low Dropout Regulators with Micropower Quiescent Current and Shutdown
• Manufacturer: Linear Technology

ABSOLUTE
LT1521/LT1521-3
LT1521-3.3/LT1521-5
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
Consult factory for Military grade parts.
2
PACKAGE/ORDER
SENSE/ADJ*
ORDER PART NUMBER
MS8 PART MARKING
GND
T
OUT
LT1521CMS8
LT1521CMS8-3
LT1521CMS8-3.3
LT1521CMS8-5
*PIN 2 = SENSE FOR LT1521-3/
JMAX
NC
LT1521-3.3/LT1521-5
PIN 2 = ADJ FOR LT1521
8-LEAD PLASTIC MSOP
1
2
3
4
= 125 C,
MS8 PACKAGE
LTEZ
LTFB
LTDU
LTFA
W
TOP VIEW
MAXIMUM
JA
= 125 C/ W
W W
8
7
6
5
IN
NC
NC
SHDN
INFORMATION
U
RATINGS
W
*PIN 2 = SENSE FOR LT1521-3/LT1521-3.3/LT1521-5
SENSE/ADJ*
U
SEE THE APPLICATIONS INFORMATION SECTION
1521
15213
152133
15215
ORDER PART NUMBER
GND
OUT
S8 PART MARKING
NC
T
JMAX
U
1
2
3
4
LT1521CS8
LT1521CS8-3
LT1521CS8-3.3
LT1521CS8-5
LT1521IS8
LT1521IS8-3
LT1521IS8-3.3
LT1521IS8-5
8-LEAD PLASTIC SO
(Note 1)
= ADJ FOR LT1521
= 125 C,
S8 PACKAGE
TOP VIEW
Storage Temperature Range ................. – 65 C to 150 C
Operating Junction Temperature Range (Note 2)
Lead Temperature (Soldering, 10 sec).................. 300 C
*For applications requiring input voltage ratings greater than 20V, contact
JA
the factory.
= 70 C/ W
Commercial ........................................... 0 C to 125 C
Industrial ......................................... – 40 C to 125 C
1521I
1521I3
1521I33
1521I5
8
7
6
5
IN
GND
GND
SHDN
SEE THE APPLICATIONS INFORMATION SECTION
ORDER PART NUMBER
15213
152133
15215
TAB IS
ST PART MARKING
GND
T
3-LEAD PLASTIC SOT-223
JMAX
LT1521CST-3
LT1521CST-3.3
LT1521CST-5
LT1521IST-3
LT1521IST-3.3
LT1521IST-5
= 125 C,
FRONT VIEW
ST PACKAGE
JA
= 50 C/ W
1
2
3
1521I3
1521I33
1521I5
OUT
GND
IN