2

LTC1574

LTC1574-3.3/LTC1574-5

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Feedback Current into Pin 10

LTC1574

1

µA

Feedback Voltage

LTC1574

q

1.20

1.25

1.30

V

Regulated Output Voltage

LTC1574-3.3

q

3.14

3.30

3.46

V

LTC1574-5

q

4.75

5.00

5.25

V

Output Voltage Line

10

70

mV

Regulation

Output Voltage Load

LTC1574-3.3 (Note 2)

– 5

– 70

mV

Regulation

–45

– 70

mV

LTC1574-5 (Note 2)

– 5

– 70

mV

–50

– 70

mV

Input DC Supply Current (Note 3)

Active Mode

450

600

µA

Sleep Mode

130

180

µA

Shutdown (Note 4)

2

25

µA

Low-Battery Trip Point

1.25

1.4

V

Current into Pin 12

0.5

µA

Current Sunk by Pin 11

0.5

1.0

1.5

mA

1.0

µA

Comparator Hysteresis

7.5

15

30

mV

Current Limit

q

0.54

0.60

0.78

A

q

0.27

0.34

0.50

A

ON Resistance of Switch

q

0.9

1.55

Ω

Switch Off Time

3

4

5

µs

Shutdown Pin High

Minimum Voltage at Pin 7 for Device to Be Active

1.2

V

Shutdown Pin Low

Maximum Voltage at Pin 7 for Device to Be in Shutdown

0.75

V

Shutdown Pin Input Current

2

µA

ELECTRICAL CHARACTERISTICS

ORDER PART

NUMBER

LTC1574CS

LTC1574CS-3.3

LTC1574CS-5

Consult factory for Industrial and Military grade parts.

(Voltage Referred to GND Pin)

Input Supply Voltage (Pin 5) .................. – 0.3V to 18.5V

Switch Current (Pin 3, 14) ........................................ 1A

Operating Temperature Range .................... 0

°C to 70°C

Junction Temperature (Note 1) ............................ 125

°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec) .................. 300

°C

TOP VIEW

S PACKAGE

16-LEAD PLASTIC SO

*ADJUSTABLE OUTPUT VERSION

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

NC

GND

SW

GND

SHDN

NC

NC

GND

SW

GND

NC