LT3092 datasheet(3/22 Pages) LINER

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LT3092

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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: Unless otherwise speciﬁed, all voltages are with respect to VOUT.

The LT3092E is tested and speciﬁed under pulse load conditions such

that TJ ≅ TA. The LT3092E is 100% tested at TA = 25°C. Performance at

–40°C and 125°C is assured by design, characterization, and correlation

with statistical process controls. The LT3092I is guaranteed to meet all

data sheet speciﬁcations over the full –40°C to 125°C operating junction

temperature range. The LT3092MP is 100% tested and guaranteed over

the –55°C to 125°C operating junction temperature range.

Note 3: Minimum load current is equivalent to the quiescent current of

the part. Since all quiescent and drive current is delivered to the output

of the part, the minimum load current is the minimum current required to

maintain regulation.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SET Pin Current

ISET

VIN = 2V, ILOAD = 1mA

2V ≤ VIN ≤ 40V, 1mA ≤ ILOAD ≤ 200mA

9.9

9.8

10.1

10.2

μA

Offset Voltage (VOUT – VSET)

VOS

VIN = 2V, ILOAD = 1mA

–2

–4

Current Regulation (Note 7)

ΔISET

ΔVOS

ΔILOAD = 1mA to 200mA

–0.1

–0.5

–2

Line Regulation

ΔISET

ΔVOS

ΔVIN = 2V to 40V, ILOAD = 1mA

0.03

0.003

0.2

0.010

nA/V

mV/V

Minimum Load Current (Note 3)

2V ≤ VIN ≤ 40V

300

500

μA

Dropout Voltage (Note 4)

ILOAD = 10mA

ILOAD = 200mA

1.22

1.3

1.45

1.65

Current Limit

VIN = 5V, VSET = 0V, VOUT = –0.1V

200

300

Reference Current RMS Output Noise (Note 5)

10Hz ≤ f ≤ 100kHz

0.7

nARMS

Ripple Rejection

f = 120Hz, VRIPPLE = 0.5VP-P, ILOAD = 0.1A,

CSET = 0.1μF, COUT = 2.2μF

f = 10kHz

f = 1MHz

Thermal Regulation

ISET

10ms Pulse

0.003

%/W

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TJ = 25°C. (Note 2)

Note 4: For the LT3092, dropout is speciﬁed as the minimum input-to-

output voltage differential required supplying a given output current.

Note 5: Adding a small capacitor across the reference current resistor

lowers output noise. Adding this capacitor bypasses the resistor shot noise

and reference current noise (see the Applications Information section).

Note 6: Diodes with series 1k resistors clamp the SET pin to the OUT pin.

These diodes and resistors only carry current under transient overloads.

Note 7: Current regulation is Kelvin-sensed at the package.

Note 8: This IC includes overtemperature protection that protects the

device during momentary overload conditions. Junction temperature

exceeds the maximum operating junction temperature when

overtemperature protection is active. Continuous operation above the

speciﬁed maximum operating junction temperature may impair device

reliability.

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