LT1521/LT1521-3

LT1521-3.3/LT1521-5

3

Rev. C

For more information www.analog.com

ELECTRICAL CHARACTERISTICS

ORDER INFORMATION

The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Regulated Output Voltage

(Note 4)

LT1521-3

VIN = 3.5V, IOUT = 1mA, TJ = 25°C

4V < VIN < 20V, 1mA < IOUT < 300mA

l

2.950

2.900

3.000

3.000

3.050

3.100

V

V

LT1521-3.3

VIN = 3.8V, IOUT = 1mA, TJ = 25°C

4.3V < VIN < 20V, 1mA < IOUT < 300mA l

3.250

3.200

3.300

3.300

3.350

3.400

V

V

LT1521-5

VIN = 5.5V, IOUT = 1mA, TJ = 25°C

6V < VIN < 20V, 1mA < IOUT < 300mA

l

4.925

4.850

5.000

5.000

5.075

5.150

V

V

LT1521 (Note 5)

VIN = 4.3V, IOUT = 1mA, TJ = 25°C

4.8V < VIN < 20V, 1mA < IOUT < 300mA l

3.695

3.640

3.750

3.750

3.805

3.860

V

V

Line Regulation

LT1521-3

∆VIN = 4.5 to 20V, IOUT = 1mA

l

1.5

20

mV

LT1521-3.3

∆VIN = 4.8 to 20V, IOUT = 1mA

l

1.5

20

mV

LT1521-5

∆VIN = 5.5 to 20V, IOUT = 1mA

l

1.5

20

mV

LT1521 (Note 5)

∆VIN = 4.3 to 20V, IOUT = 1mA

l

1.5

20

mV

Load Regulation

LT1521-3

∆ILOAD = 1mA to 300mA, TJ ≤ 25°C

–20

–30

mV

LT1521-3.3

∆ILOAD = 1mA to 300mA, TJ ≤ 25°C

–20

–30

mV

LT1521-5

∆ILOAD = 1mA to 300mA, TJ ≤ 25°C

–25

–45

mV

LT1521 (Note 5)

∆ILOAD = 1mA to 300mA, TJ ≤ 25°C

–20

–30

mV

LT1521-3

∆ILOAD = 1mA to 300mA, TJ > 25°C

–20

–55

mV

LT1521-3.3

∆ILOAD = 1mA to 300mA, TJ > 25°C

–20

–55

mV

LT1521-5

∆ILOAD = 1mA to 300mA, TJ > 25°C

–25

–75

mV

LT1521 (Note 5)

∆ILOAD = 1mA to 300mA, TJ > 25°C

–20

–55

mV

Dropout Voltage (Note 6)

ILOAD = 1mA, TJ = 25°C

ILOAD = 1mA

l

130

170

250

mV

mV

ILOAD = 50mA, TJ = 25°C

ILOAD = 50mA

l

290

350

450

mV

mV

ILOAD = 100mA, TJ = 25°C

ILOAD = 100mA

l

350

420

550

mV

mV

ILOAD = 150mA, TJ = 25°C

ILOAD = 150mA

l

400

470

600

mV

mV

ILOAD = 300mA, TJ = 25°C

ILOAD = 300mA

l

500

600

750

mV

mV

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT1521CST-3#PBF

LT1521CST-3#TRPBF

15213

3-Lead Plastic SOT-223

0°C to 125°C

LT1521CST-3.3#PBF

LT1521CST-3.3#TRPBF

152133

3-Lead Plastic SOT-223

0°C to 125°C

LT1521CST-5#PBF

LT1521CST-5#TRPBF

15215

3-Lead Plastic SOT-223

0°C to 125°C

LT1521IST-3#PBF

LT1521IST-3#TRPBF

1521I3

3-Lead Plastic SOT-223

–40°C to 125°C

LT1521IST-3.3#PBF

LT1521IST-3.3#TRPBF

1521I33

3-Lead Plastic SOT-223

–40°C to 125°C

LT1521IST-5#PBF

LT1521IST-5#TRPBF

1521I5

3-Lead Plastic SOT-223

–40°C to 125°C

Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.