LTC3442

2

3442f

SW1, SW2 Voltage

DC ................................................................. – 0.3 to 6V

Pulsed <100ns ............................................... – 0.3 to 7V

SHDN/SS, BURST Voltage ............................. – 0.3 to 6V

Operating Temperature (Note 2) ............. – 40°C to 85°C

Maximum Junction Temperature (Note 4) ............ 125°C

Storage Temperature Range ................. – 65°C to 125°C

ORDER PART

NUMBER

DE PART

MARKING

3442

LTC3442EDE

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Start-Up Voltage

●

2.3

2.4

V

Output Voltage Adjust Range

●

2.4

5.25

V

Feedback Voltage

●

1.19

1.22

1.25

V

Feedback Input Current

1

50

nA

Quiescent Current – Burst Mode Operation

35

60

µA

Quiescent Current – Shutdown

0.1

1

µA

Quiescent Current – Active

600

1100

µA

NMOS Switch Leakage

Switches B and C

0.1

2

µA

PMOS Switch Leakage

Switches A and D

0.1

3

µA

NMOS Switch On Resistance

Switches B and C

0.10

Ω

PMOS Switch On Resistance

Switches A and D

0.10

Ω

Input Current Limit

●

23

A

Reverse Current Limit

0.5

A

Burst Mode Operation Current Limit

0.9

A

Max Duty Cycle

Boost (% Switch C On)

●

70

88

%

Buck (% Switch A In)

●

100

%

Min Duty Cycle

●

0%

Frequency Accuracy

●

570

670

770

kHz

90

dB

Error Amp Source Current

11

µA

Error Amp Sink Current

300

µA

Burst Threshold (Falling)

0.88

V

Burst Threshold (Rising)

1.12

V

EXPOSED PAD IS PGND (PIN 13)

MUST BE SOLDERED TO PCB

12

11

10

9

8

7

1

2

3

4

5

6

FB

BURST

SHDN/SS

RT

SGND

SW1

PGND

SW2

TOP VIEW

13

DE12 PACKAGE

12-LEAD (4mm × 3mm) PLASTIC DFN