LTC3458L

2

3458lf

Operating Temperature Range

(Notes 2, 3) .........................................–40

°C to 85°C

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

°C to 125°C

SW Voltage

DC ........................................................... –0.3V to 7V

Pulsed <100ns ........................................ –0.3V to 8V

ORDER PART

NUMBER

LTC3458LEDE

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

1.4

1.5

V

1.4

1.7

V

Output Voltage Adjust Range

●

26

V

Feedback Voltage

0

1.21

1.225

1.25

V

–40

°C to 0°C

1.20

1.25

V

Undervoltage (Exit Burst Mode Operation)

Below Feedback Voltage

–4

%

Feedback Input Current

1

50

nA

Quiescent Current – Burst Mode Operation

12

30

µA

5

10

µA

Quiescent Current – Shutdown

0.5

1

µA

1

3

µA

Quiescent Current – Active

1

3

mA

NMOS Switch Leakage

●

0.05

5

µA

PMOS Switch Leakage

●

0.05

5

µA

NMOS Switch On Resistance

0.2

Ω

PMOS Switch On Resistance

0.3

Ω

Fixed NMOS Current Limit

●

1.7

2.1

A

Maximum Duty Cycle

●

80

90

%

Minimum Duty Cycle

●

0%

Frequency Accuracy

●

0.85

1

1.15

MHz

Error Amplifier Transconductance

60

µA/V

Error Amplifier Source Current

7

µA

Error Amplifier Sink Current

7

µA

SYNC Input High

●

1.5

V

SYNC Input Low

●

0.35

V

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

12

11

10

9

8

7

1

2

3

4

5

6

BURST

SS

GND

COMP

FB

SW

SYNC

SHDN

TOP VIEW

DE PACKAGE

12-LEAD (4mm

× 3mm) PLASTIC DFN

EXPOSED PAD IS PGND (PIN 13),

MUST BE SOLDERED TO PCB

13

DE PART MARKING

3458L