2

LT3463/LT3463A

3463f

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

D2 Voltage ............................................................. –42V

FB1, FB2 Voltage Range .............................. –0.3V to 2V

Junction Temperature ........................................... 125

°C

Operating Ambient Temperature Range

(Note 2) .............................................. – 40

°C to 85°C

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

°C to 125°C

ORDER PART

NUMBER

LT3463EDD

LT3463AEDD

DD PART MARKING

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

2.2

2.4

V

Total Quiescent Current

For Both Switchers, Not Switching

40

60

µA

Shutdown Current

0.1

1

µA

With 124k

Ω to GND

q

1.23

1.25

1.27

V

With 124k

Ω to GND

0.05

0.10

%/V

FB1 Comparator Trip Voltage

High to Low Transition

q

1.225

1.25

1.275

V

FB1 Comparator Hysteresis

8mV

FB1 Line Regulation

0.05

0.10

%/V

FB1 Pin Bias Current (Note 3)

q

20

50

nA

FB2 Comparator Trip Voltage

Low to High Transition

q

03

12

mV

FB2 Comparator Hysteresis

8mV

0.05

0.10

%/V

FB2 Pin Bias Current (Note 4)

q

20

50

nA

SW1 Switch Off Time

300

ns

1.5

µs

SW2 Switch Off Time

300

ns

1.5

µs

180

mV

Switch Current Limit (SW1)

180

250

320

mA

Switch Current Limit (SW2)

LT3463

180

250

320

mA

LT3463A

320

400

460

mA

Swith Leakage Current (SW1, SW2)

0.01

1

µA

750

mV

Schottky Reverse Leakage Current

1

5

µA

1

5

µA

SHDN1 Pin Current

4

10

µA

SHDN2 Pin Current

4

10

µA

SHDN1/SHDN2 Start-Up Threshold

0.3

1

1.5

V

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT3463/LT3463A are guaranteed to meet performance

specifications from 0

°C to 70°C. Specifications over the –40°C to 85°C

EXPOSED PAD (PIN 11) IS GND

AND MUST BE SOLDERED TO PCB

LAFC

LBJK

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

TOP VIEW

DD PACKAGE

10-LEAD (3mm

× 3mm) PLASTIC DFN

10

9

6

7

8

4

5

3

2

1

FB1

SHDN1

SHDN2

FB2

SW1

SW2

D2

11

operating ambient temperature range are assured by design,

characterization and correlation with statistical process controls.

Note 3: Bias current flows into the FB1 pin.

Note 4: Bias current flows out of the FB2 pin.