LT1573CS8-3.3 datasheet(4/16 Pages) LINER

Part #	LT1573CS8-3.3

Description	Low Dropout PNP Regulator Driver

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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4

LT1573

FEEDBACK PIN VOLTAGE (V)

0

1.0

1.2

450

400

350

300

250

200

150

100

50

0

1573 G07

0.4

0.6

0.8

0.2

1.4

TJ = 130°C

TJ = 25°C

TJ = –45°C

Drive Pin Current vs

Feedback Pin Voltage

TEMPERATURE (

°C)

–50

150

1573 G09

–25

0

255075

125

100

0.85

0.80

0.75

0.70

0.65

0.60

0.55

0.50

0.45

0.40

VIN = 5V

LATCH DISABLED FOR

(VIN – VOUT) < LATCH DISABLE THRESHOLD

DRIVE PIN CURRENT (mA)

0

50

100

150

200

1573 G08

250

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

300

TJ = 130°C

TJ = –45°C

TJ = 25°C

Latch-Disable Threshold

(VIN – VOUT) vs Temperature

INPUT VOLTAGE (V)

23

3.0

2.5

2.0

1.5

1.0

0.5

0

45

7

6

1573 G10

8

TJ = 125°C

TJ = –45°C

TJ = 25°C

Latch Charging Current vs

Input Voltage

Latch Pin Latch-Off Threshold vs

Input Voltage

INPUT VOLTAGE (V)

2

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

45

7

36

1573 G12

8

TJ = 25°C

TJ = –45°C

TJ = 125°C

Latching Current vs Input Voltage

INPUT VOLTAGE (V)

2

357

16

14

12

10

8

6

4

2

0

46

1573 G11

8

TJ = 125°C

TJ = 25°C

TJ = –45°C

SHUTDOWN PIN VOLTAGE (V)

0

300

250

200

150

100

50

0

23

5

7

14

6

1573 G14

TJ = 125°C

TJ = 25°C

TJ = –45°C

TEMPERATURE (

°C)

1.5

1.4

1.3

1.2

1.1

1.0

1573 G13

–50

150

–25

0

25

50

75

125

100

Shutdown Pin Current vs

Shutdown Pin Voltage

Shutdown Voltage Threshold vs

Temperature

Drive Pin Saturation Voltage vs

Drive Pin Current

TYPICAL PERFOR A CE CHARACTERISTICS

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LT1573CS8-3.3 Datasheet(PDF) 4 Page - Linear Technology

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