LT3045 datasheet(5/32 Pages) LINER

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LT3045

3045fa

For more information www.linear.com/LT3045

Typical perForMance characTerisTics

Offset Voltage

SET Pin Current

Offset Voltage (VOUT – VSET)

SET Pin Current

Offset Voltage (VOUT – VSET)

TJ = 25°C, unless otherwise noted.

elecTrical characTerisTics

Note 9: The LT3045 is tested and specified under pulsed load conditions

such that TJ ≈ TA. The LT3045E is 100% tested at 25°C and performance

is guaranteed from 0°C to 125°C. Specifications over the –40°C to 125°C

operating temperature range are assured by design, characterization, and

correlation with statistical process controls. The LT3045I is guaranteed

over the full –40°C to 125°C operating temperature range. LT3045H is

100% tested at the 150°C operating junction temperature. High junction

temperatures degrade operating lifetimes. Operating lifetime is derated at

junction temperatures greater than 125°C.

Note 10: Parasitic diodes exist internally between the ILIM, PG, PGFB, SET,

OUTS, and OUT pins and the GND pin. Do not drive these pins more than

0.3V below the GND pin during a fault condition. These pins must remain at

a voltage more positive than GND during normal operation.

Note 11: The current limit programming scale factor is specified while the

internal backup current limit is not active. Note that the internal current

limit has foldback protection for VIN – VOUT differentials greater than 12V.

Note 12: The internal back-up current limit circuitry incorporates foldback

protection that decreases current limit for VIN – VOUT > 12V. Some level of

output current is provided at all VIN – VOUT differential voltages. Consult the

Typical Performance Characteristics graph for current limit vs VIN – VOUT.

Note 13: For output voltages less than 1V, the LT3045 requires a 10µA

minimum load current for stability.

Note 14: Maximum OUT-to-OUTS differential is guaranteed by design.

VIN = 2V

IL = 1mA

VOUT = 1.3V

TEMPERATURE (°C)

–75 –50 –25 0

25 50 75 100 125 150

99.0

99.2

99.4

99.6

99.8

100.0

100.2

100.4

100.6

100.8

101.0

3045 G01

N = 3250

ISET DISTRIBUTION (µA)

100

101

102

3045 G02

VIN = 2V

IL = 1mA

VOUT = 1.3V

TEMPERATURE (°C)

–75 –50 –25 0

25 50 75 100 125 150

–2.0

–1.5

–1.0

–0.5

0.5

1.0

1.5

2.0

3045 G03

N = 3250

VOS DISTRIBUTION (mV)

–2

–1

3045 G04

IL = 1mA

VOUT = 1.3V

150°C

125°C

25°C

–55°C

INPUT VOLTAGE (V)

8 10 12 14 16 18 20

99.0

99.2

99.4

99.6

99.8

100.0

100.2

100.4

100.6

100.8

101.0

3045 G05

IL = 1mA

VOUT = 1.3V

150°C

125°C

25°C

–55°C

INPUT VOLTAGE (V)

8 10 12 14 16 18 20

–2.0

–1.5

–1.0

–0.5

0.5

1.0

1.5

2.0

3045 G06

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