LT3045 datasheet(3/36 Pages) LINER

3 / 36 page

LT3045-1

30451fa

For more information www.linear.com/LT3045-1

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

Minimum IN Pin Voltage

(Note 2)

ILOAD = 500mA, VIN UVLO Rising

VIN UVLO Hysteresis

1.78

Output Voltage Range

VIN > VOUT

SET Pin Current (ISET)

VIN = 2V, ILOAD = 1mA, VOUT = 1.3V

2V < VIN < 20V, 0V < VOUT < 15V, 1mA < ILOAD < 500mA (Note 3)

100

101

102

µA

Fast Start-Up Set Pin

Current

VPGFB = 289mV, VIN = 2.8V, VSET = 1.3V

Output Offset Voltage

VOS (VOUT – VSET)

(Note 4)

VIN = 2V, ILOAD = 1mA, VOUT = 1.3V

2V < VIN < 20V, 0V < VOUT < 15V, 1mA < ILOAD < 500mA (Note 3)

–1

–2

Line Regulation: ∆ISET

Line Regulation: ∆VOS

VIN = 2V to 20V, ILOAD = 1mA, VOUT = 1.3V

VIN = 2V to 20V, ILOAD = 1mA, VOUT = 1.3V (Note 4)

0.5

±2

±3

nA/V

µV/V

Load Regulation: ∆ISET

Load Regulation: ∆VOS

ILOAD = 1mA to 500mA, VIN = 2V, VOUT = 1.3V

ILOAD = 1mA to 500mA, VIN = 2V, VOUT = 1.3V (Note 4)

0.1

0.5

Change in ISET with VSET

Change in VOS with VSET

Change in ISET with VSET

Change in VOS with VSET

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

VSET = 1.3V to 15V, VIN = 20V, ILOAD = 1mA (Note 4)

VSET = 0V to 1.3V, VIN = 20V, ILOAD = 1mA

VSET = 0V to 1.3V, VIN = 20V, ILOAD = 1mA (Note 4)

0.03

150

0.3

400

0.6

600

Dropout Voltage

(Note 5)

ILOAD = 1mA, 50mA

220

275

330

ILOAD = 300mA

220

280

350

ILOAD = 500mA

260

350

450

GND Pin Current

VIN = VOUT(NOMINAL)

(Note 6)

ILOAD = 10µA

ILOAD = 1mA

ILOAD = 50mA

ILOAD = 100mA

ILOAD = 500mA

2.2

2.4

3.5

4.3

5.5

Output Noise Spectral

Density (Notes 4, 8)

ILOAD = 500mA, Frequency = 10Hz, COUT = 10µF, CSET = 0.47µF, VOUT = 3.3V

ILOAD = 500mA, Frequency = 10Hz, COUT = 10µF, CSET = 4.7µF, 1.3V ≤ VOUT ≤ 15V

ILOAD = 500mA, Frequency = 10kHz, COUT = 10µF, CSET = 0.47µF, 1.3V ≤ VOUT ≤ 15V

ILOAD = 500mA, Frequency = 10kHz, COUT = 10µF, CSET = 0.47µF, 0V ≤ VOUT < 1.3V

500

nV/√Hz

Output RMS Noise

(Notes 4, 8)

ILOAD = 500mA, BW = 10Hz to 100kHz, COUT = 10µF, CSET = 0.47µF, VOUT = 3.3V

ILOAD = 500mA, BW = 10Hz to 100kHz, COUT = 10µF, CSET = 4.7µF, 1.3V ≤ VOUT ≤ 15V

ILOAD = 500mA, BW = 10Hz to 100kHz, COUT = 10µF, CSET = 4.7µF, 0V ≤ VOUT < 1.3V

2.5

0.8

1.8

µVRMS

Reference Current RMS

Output Noise (Notes 4, 8)

BW = 10Hz to 100kHz

nARMS

Ripple Rejection

1.3V ≤ VOUT ≤ 15V

VIN – VOUT = 2V (Avg)

(Notes 4, 8)

VRIPPLE = 500mVP-P, fRIPPLE = 120Hz, ILOAD = 500mA, COUT = 10µF, CSET = 4.7µF

VRIPPLE = 150mVP-P, fRIPPLE = 10kHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 150mVP-P, fRIPPLE = 100kHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 150mVP-P, fRIPPLE = 1MHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 80mVP-P, fRIPPLE = 10MHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

117

Ripple Rejection

0V ≤ VOUT < 1.3V

VIN – VOUT = 2V (Avg)

(Notes 4, 8)

VRIPPLE = 500mVP-P, fRIPPLE = 120Hz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 50mVP-P, fRIPPLE = 10kHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 50mVP-P, fRIPPLE = 100kHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 50mVP-P, fRIPPLE = 1MHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

VRIPPLE = 50mVP-P, fRIPPLE = 10MHz, ILOAD = 500mA, COUT = 10µF, CSET = 0.47µF

104

EN/UV Pin Threshold

EN/UV Trip Point Rising (Turn-On), VIN = 2V

1.18

1.24

1.32

EN/UV Pin Hysteresis

EN/UV Trip Point Hysteresis, VIN = 2V

130

LT3045 bảng dữ liệu(PDF) 3 Page - Linear Technology

LT3045 bảng dữ liệu(HTML) 3 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

bảng dữ liệu tải về

Link URL