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LT3082

200mA Single Resistor Low Dropout Linear Regulator

Linear Technology 

LT3082

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating

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

PARAMETER

SET Pin Current

Offset Voltage (VOUT – VSET)

Load Regulation (Note 7)

Line Regulation

Minimum Load Current (Note 3)

Dropout Voltage (Note 4)

ISET

VOS

ΔISET

ΔVOS

ΔISET

ΔVOS

Current Limit

Error Amplifier RMS Output Noise (Note 5)

Reference Current RMS Output Noise (Note 5)

Ripple Rejection

Thermal Regulation

ISET

CONDITIONS

VIN = 2V, ILOAD = 1mA

2V ≤ VIN ≤ 40V, 1mA ≤ ILOAD ≤ 200mA

VIN = 2V, ILOAD = 1mA

VIN = 2V, ILOAD = 1mA

ΔILOAD = 1mA to 200mA

ΔILOAD = 1mA to 200mA

ΔVIN = 2V to 40V, ILOAD = 1mA

ΔVIN = 2V to 40V, ILOAD = 1mA

2V ≤ VIN ≤ 40V

ILOAD = 10mA

ILOAD = 200mA

VIN = 5V, VSET = 0V, VOUT = –0.1V

ILOAD = 200mA, 10Hz ≤ f ≤ 100kHz, COUT = 10μF,

CSET = 0.1μF

10Hz ≤ f ≤ 100kHz

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

COUT = 2.2μF, CSET = 0.1μF

f = 10kHz

f = 1MHz

10ms Pulse

MIN

9.90

l 9.80

–2

l –4

l

l

l

l

l 200

TYP

10

10

–0.1

–0.5

0.03

0.003

300

1.22

1.3

300

33

MAX

10.10

10.20

2

4

–2

0.2

0.010

500

1.45

1.65

0.7

90

75

20

0.003

UNITS

μA

μA

mV

mV

nA

mV

nA/V

mV/V

μA

V

V

mA

μVRMS

nARMS

dB

dB

dB

%/ W

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 LT3082E is tested and specified under pulse load conditions such

that TJ ≅ TA. The LT3082E 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 LT3082I is guaranteed to meet all

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

temperature range. The LT3082MP 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.

Note 4: For the LT3082, 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; output noise is then equal to error

amplifier 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: Load 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.

3082f

3

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