LT3592IMSE datasheet(3/24 Pages) LINER

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LT3592

3592fa

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LT3592E is guaranteed to meet performance speciﬁcations

from 0°C to 125°C junction temperature. Speciﬁcations over the –40°C

to 125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LT3592I is guaranteed over the full –40°C to 125°C operating junction

temperature range. The operating lifetime is derated at junction

temperatures greater than 125°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

3.25

3.6

Input Quiescent Current

- in Shutdown

Not Switching

VSHDN = 0.3V

0.1

μA

CAP to OUT Voltage

0.4Ω CAP to OUT

BRIGHT = 1.4V

BRIGHT = 0.3V

190

200

210

DA Pin Current to Stop OSC

–0.8

–1

–1.2

Switching Frequency

RT = 357k

RT = 140k

RT = 48.7k

350

800

1.9

400

900

2.2

450

1000

2.5

kHz

MHz

Maximum Duty Cycle

RT = 140k

SHDN Input High Voltage

2.3

SHDN Input Low Voltage

0.3

BRIGHT Input High Voltage

1.4

BRIGHT Input Low Voltage

0.3

Switch Current Limit (Note 4)

0.85

1.25

1.5

Switch VCESAT

ISW = 500mA

300

Boost Pin Current

ISW = 500mA

Switch Leakage Current

110

μA

Minimum Boost Voltage

VOUT = 4V

1.8

2.5

Boost Diode Forward Voltage

IDIO = 50mA

800

VFB Voltage

OUT = CAP = 4V

1.185

1.21

1.235

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 12V, VBOOST = 16V, VOUT = 4V unless otherwise noted. (Note 2)

Note 3: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed the maximum operating junction temperature

when overtemperature protection is active. Continuous operation above

the speciﬁed maximum operating junction temperature may result in

device degradation or failure.

Note 4: Switch Current Measurements are performed when the outputs

are not switching. Slope compensation reduces current limit at higher duty

cycles.

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