Data Sheet

LT3041

SPECIFICATIONS

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Rev. 0 | 3 of 36

ELECTRICAL CHARACTERISTICS

TJ = −40°C to +125°C for the minimum and maximum values, TA = 25°C for the typical values, output capacitance (COUT) = two parallel 10 μF

ceramic capacitors, and SET capacitance (CSET) = 4.7 μF, unless otherwise noted.

Table 1. Electrical Characteristics

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

INPUT VOLTAGE RANGE

2.2

20

V

MINIMUM IN PIN VOLTAGE1

Input-voltage (VIN) undervoltage lockout (UVLO) rising

2

2.2

V

VIN UVLO hysteresis

80

mV

OUTPUT VOLTAGE RANGE

VIN > output voltage (VOUT)

0.2

15

V

SET PIN CURRENT (ISET)

VIN = 2.2 V, IL = 1 mA, VOUT = 1.3 V, TA = 25°C

99.5

100

100.5

µA

2.2 V < VIN < 20 V, 0.2 V < VOUT < 15 V, 1 mA < IL < 1 A2 99

100

101

µA

FAST STARTUP ISET

PGFB voltage (VPGFB) = 289 mV, VIN = 2.8 V, SET

voltage (VSET) = 1.3 V

10

mA

OUTPUT OFFSET VOLTAGE, VOS (VOUT – VSET)3

VIN = 2.2 V, IL = 1 mA, VOUT = 1.3 V, TA = 25°C

–1

+1

mV

2.2 V < VIN < 20 V, 0.2 V < VOUT < 15 V, 1 mA < IL < 1 A2 –2

+2

mV

LINE REGULATION

ΔISET

VIN = 2.2 V to 20 V, IL = 1 mA, VOUT = 1.3 V

0.1

±12

nA/V

ΔVOS

VIN = 2.2 V to 20 V, IL = 1 mA, VOUT = 1.3 V3

1.5

±30

µV/V

LOAD REGULATION

ΔISET

IL = 1 mA to 1 A, VIN = 2.2 V, VOUT = 1.3 V

3

nA

ΔVOS

IL = 1 mA to 1 A, VIN = 2.2 V, VOUT = 1.3 V3

0.1

0.8

mV

CHANGE IN ISET WITH VSET4

VSET = 1.3 V to 15 V, VIN = 20 V, IL = 1 mA

140

500

nA

VSET = 0.2 V to 0.75 V, VIN = 20 V, IL = 1 mA

10

200

nA

CHANGE IN VOS WITH VSET4

VSET = 1.3 V to 15 V, VIN = 20 V, IL = 1 mA3

0.06

0.6

mV

VSET = 0.2 V to 0.75 V, VIN = 20 V, IL = 1 mA3

0.004

0.2

mV

ERROR-AMPLIFIER SWITCHOVER POINT

VIN = 2.2 V, IL = 1 mA, VSET rising

946

mV

PNP to NPN Input-Pair Switchover

VIN = 2.2 V, IL = 1 mA, VSET falling

922

mV

Hysteresis

24

mV

DROPOUT VOLTAGE5

IL = 1 mA and 100 mA, TA = 25°C

290

370

mV

IL = 1 mA and100 mA

460

mV

IL = 500 mA, TA = 25°C

290

380

mV

IL = 500 mA

470

mV

IL = 1 A, TA = 25°C

310

390

mV

IL = 1 A

480

mV

GND PIN CURRENT, VIN = VOUT (NOMINAL)6

IL = 10 µA

4.3

mA

IL = 1 mA

4.4

7

mA

IL = 100 mA

7

13

mA

IL = 500 mA

16

25

mA

IL = 1 A

32

50

mA

OUTPUT NOISE3, 7

IL = 1 A, frequency = 10 Hz, CSET = 0.47 µF, VOUT = 3.3

V

287

nV/√Hz

IL = 1 A, frequency = 10 Hz, CSET = 4.7 µF, 1.3 V ≤ VOUT

≤ 15 V

36

nV/√Hz

IL = 1 A, frequency = 10 kHz, CSET = 0.47 µF, 1.3 V ≤

VOUT ≤ 15 V

3

nV/√Hz

IL = 1 A, frequency = 10 kHz, CSET = 0.47 µF, 0.2 V ≤

VOUT < 1.3 V

9

nV/√Hz