LT3434

2

3434f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SHDN Threshold

1.15

1.3

1.45

V

SHDN Input Current

SHDN = 12V

●

520

µA

Minimum Input Voltage (Note 3)

●

2.4

3

V

Supply Shutdown Current

SHDN = 0V, BOOST = 0V, FB/PGFB = 0V

0.1

2

µA

Supply Sleep Current (Note 4)

BIAS = 0V, FB = 1.35V

●

170

250

µA

FB = 1.35V

●

45

75

µA

Supply Quiescent Current

BIAS = 0V, FB = 1.15V

3.2

6

mA

BIAS = 5V, FB = 1.15V

2.6

5

mA

Minimum BIAS Voltage (Note 5)

●

2.7

3.1

V

BIAS Sleep Current (Note 4)

●

110

180

µA

BIAS Quiescent Current

SYNC = 3.3V

700

900

µA

Minimum Boost Voltage (Note 6)

1.8

V

Input Boost Current (Note 7)

65

85

mA

●

1.225

1.25

1.275

V

FB Input Bias Current

75

200

nA

EA Voltage Gain (Note 8)

900

V/V

400

650

900

µMho

EA Source Current

FB = 1.15V

20

40

55

µA

EA Sink Current

FB = 1.35V

15

30

40

µA

6A/V

2.1

2.2

2.4

V

SW Current Limit

●

3

4.7

6.5

A

(Note 1)

BOOST Pin Above SW ............................................ 35V

BOOST Pin Voltage ................................................. 68V

Operating JunctionTemperature Range

LT3434EFE (Note 2) ........................ – 40°C to 125°C

LT3434IFE (Note 2) ......................... – 40°C to 125°C

Storage Temperature Range ................. – 65°C to 150°C

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

ORDER PART

NUMBER

Consult LTC Marketing for parts specified with wider operating temperature ranges.

LT3434EFE

LT3434IFE

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

EXPOSED PAD IS GND (PIN 17)

MUST BE SOLDERED TO GND (PIN 8)

FE PACKAGE

16-LEAD PLASTIC TSSOP

1

2

3

4

5

6

7

8

TOP VIEW

16

15

14

13

12

11

10

9

NC

SW

SW

BOOST

TCAP

GND

PGOOD

SHDN

SYNC

PGFB

FB

BIAS

17