LT3028 datasheet(5/20 Pages) LINER

Part #	LT3028

Description	Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT3029

5

3029fa

ADJ1 or ADJ2 Pin Voltage

Quiescent Current (per Channel)

TYPICAL PERFORMANCE CHARACTERISTICS

GND Pin Current (per Channel)

GND Pin Current vs ILOAD

SHDN1 or SHDN2 Pin Threshold

(On-to-Off)

TEMPERATURE (°C)

3029 G05

–75 –50 –25 0

25 50 75 100 125 150 175

IL = 1mA

1.239

1.233

1.227

1.221

1.215

1.209

1.203

1.197

1.191

INPUT VOLTAGE (V)

160

140

120

100

80

60

40

20

0

3029 G06

0246

8

10 12 14 16 18 20

TJ = 25°C

RL = 243k

VOUT = 1.215V

VSHDN = VIN

VSHDN = 0V

INPUT VOLTAGE (V)

3029 G07

0123

4

5

67

8

9

10

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

TJ = 25°C

FOR VOUT = 1.215V

RL = 24.3Ω, IL = 50mA

RL = 1.215kΩ, IL = 1mA

RL = 121.5Ω, IL = 10mA

INPUT VOLTAGE (V)

3029 G08

0123

4

5

67

8

9

10

16

14

12

10

8

6

4

2

0

TJ = 25°C

FOR VOUT = 1.215V

RL = 2.43Ω, IL = 500mA

RL = 12.15Ω, IL = 100mA

RL = 4.05Ω, IL = 300mA

OUTPUT CURRENT (mA)

3029 G09

0

50 100 150 200 250 300 350 400 450 500

TJ = 25°C

VIN = VOUT(NOMINAL) + 1V

16

14

12

10

8

6

4

2

0

TEMPERATURE (°C)

3029 G10

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

IL = 1mA

–75 –50 –25 0

25 50 75 100 125 150 175

TJ = 25°C, unless otherwise noted.

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