LT3041 datasheet(4/36 Pages) AD

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Data Sheet

LT3041

SPECIFICATIONS

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Rev. 0 | 4 of 36

Table 1. Electrical Characteristics

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

OUTPUT RMS NOISE3, 7

IL = 1 A, bandwidth = 10 Hz to 100 kHz, CSET = 0.47 µF,

VOUT = 3.3 V

2.2

µV rms

IL = 1 A, bandwidth = 10 Hz to 100 kHz, CSET = 4.7 µF,

1.3 V ≤ VOUT ≤ 15 V

1.0

µV rms

IL = 1 A, bandwidth = 10 Hz to 100 kHz, CSET = 4.7 µF,

0.2 V ≤ VOUT < 1.3 V

2.3

µV rms

OUTPUT PEAK-TO-PEAK 1/F NOISE3, 7

IL = 1 A, bandwidth = 0.1 Hz to 10 Hz, CSET = 4.7 µF,

VOUT = 3.3 V

µV p-p

IL = 1 A, bandwidth = 0.1 Hz to 10 Hz, CSET = 22 µF,

VOUT = 3.3 V

µV p-p

REFERENCE CURRENT RMS OUTPUT NOISE3, 7

Bandwidth = 10 Hz to 100 kHz

nA rms

POWER-SUPPLY REJECTION RATIO (PSRR)

1.3 V ≤ VOUT ≤ 15 V (VIN – VOUT = 1.7 V (Avg)3, 7)

Ripple voltage (VRIPPLE) = 500 mV p-p, ripple frequency

(fRIPPLE) = 120 Hz, IL = 1 A

100

VRIPPLE = 150 mV p-p, fRIPPLE = 10 kHz, IL = 1 A

VRIPPLE = 150 mV p-p, fRIPPLE = 100 kHz, IL = 1 A

VRIPPLE = 150 mV p-p, fRIPPLE = 1 MHz, IL = 1 A

VRIPPLE = 80 mV p-p, fRIPPLE = 10 MHz, IL = 1 A

0.2 V ≤ VOUT < 1.3 V (VIN – VOUT = 1.7 V (Avg) or

VIN(min) = 2.2V3, 7)

VRIPPLE = 500 mV p-p, fRIPPLE = 120 Hz, IL = 1 A

102

VRIPPLE = 50 mV p-p, fRIPPLE = 10 kHz, IL = 1 A

VRIPPLE = 50 mV p-p, fRIPPLE = 100 kHz, IL = 1 A

VRIPPLE = 50 mV p-p, fRIPPLE = 1 MHz, IL = 1 A

VRIPPLE = 50 mV p-p, fRIPPLE = 10 MHz, IL = 1 A

EN/UV PIN

Threshold

EN/UV trip-point rising (turn-on), VIN = 2.2 V

1.20

1.28

1.36

Hysteresis

EN/UV trip-point hysteresis, VIN = 2.2 V

110

Current (IEN/UV)

EN/UV voltage (VEN/UV) = 0 V, VIN = 20 V

±1

µA

VEN/UV = 1.28 V, VIN = 20 V

0.003

µA

VEN/UV = 20 V, VIN = 0 V

1.5

µA

QUIESCENT CURRENT IN SHUTDOWN (VEN/UV = 0 V)

VIN = 6 V, TA = 25°C

µA

VIN = 6 V

100

µA

CURRENT LIMIT

Internal8

VIN = 2.2 V, VOUT = 0 V

1.15

1.25

1.35

VIN = 12 V, VOUT = 0 V

1.1

VIN = 20 V, VOUT = 0 V

200

340

520

Programmable

Programming scale factor: 2.2 V < VIN < 20 V9

150

mA × kΩ

VIN = 2.2 V, VOUT = 0 V, RILIM = 150 Ω

0.9

1.1

VIN = 2.2V, VOUT = 0 V, RILIM = 300 Ω

450

500

550

PGFB PIN

Trip Point

PGFB trip-point rising

292

302

312

Hysteresis

PGFB trip-point hysteresis

Current (IPGFB)

VIN = 2.2V, VPGFB = 300 mV

PG PIN

Output Low Voltage

PG current (IPG) = 100 µA

120

Leakage Current

PG voltage (VPG) = 20 V

µA

REVERSE CURRENT

Input

VIN = –20 V, VEN/UV = 0 V, VOUT = 0 V, VSET = 0 V

200

µA

Output

VIN = 0 V, VOUT = 5 V, SET = open, TA = 25°C

1000

µA

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