LTC3565

3

3565f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input DC Supply Current (Note 4)

Active Mode

Sleep Mode

Shutdown

330

40

0.1

450

60

1

μA

μA

μA

Oscillator Frequency

RT = 125k

(Note 7)

1.3

1.5

1.7

4

MHz

MHz

Synchronization Frequency

(Note 7)

0.4

4

MHz

Peak Switch Current Limit

1.5

2.1

2.5

A

Top Switch On-Resistance

MSE Package

DD Package (Note 6)

0.15

0.15

0.2

Ω

Ω

Bottom Switch On-Resistance

MSE Package

DD Package (Note 6)

0.13

0.13

0.18

Ω

Ω

Switch Leakage Current

0.01

1

μA

RUN Threshold

●

0.3

0.8

1.5

V

RUN Leakage Current

●

±0.01

±1

μA

Undervoltage Lockout Threshold

1.9

2.2

V

PGOOD

Power Good Threshold

–7

7

%

%

Power Good Pull-Down On-Resistance

15

20

Ω

PGOOD Blanking

40

105

μs

μs

Pulse Skip

Force Continuous

Burst

1.1

0.63

V

V

V

10% to 90% of Regulation

0.6

0.9

1.2

ms

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC3565E is guaranteed to meet performance specifications

from 0°C to 125°C junction temperature. Specifications over the –40°C

to 125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LTC3565I is guaranteed over the full –40°C to 125°C operating junction

temperature range. High junction temperatures degrade operating lifetimes.

Operating lifetime is derated at junction temperatures greater than 125°C.

Note 4: Dynamic supply current is higher due to the internal gate charge

being delivered at the switching frequency.

according to the following formulas:

Note 6: Switch on-resistance is guaranteed by correlation to wafer level

measurements and assured by design characterization and correlation with

statistical process controls.

Note 7: 4MHz operation is guaranteed by design but not production tested

and is subject to duty cycle limitations (see Applications Information).

Note 8: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature will exceed 125°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.