LTC3563

3

3563f

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. No pin should exceed 6V.

Note 2: The LTC3563 is guaranteed to meet performance specifications

from 0°C to 85°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 3: Failure to solder the Exposed Pad of the package to the PC board

will result in a thermal resistance much higher than 40°C/W.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Undervoltage Lockout Threshold

1.8

2.0

1.9

2.3

V

V

RUN Threshold

●

0.3

1.2

V

RUN Leakage Current

●

±0.01

±1

µA

●

0.3

1

1.2

V

1.3

2.2

3

MΩ

ELECTRICAL CHARACTERISTICS

Note 4: The converter is tested in a proprietary test mode that connects

the output of the error amplifier to the SW pin, which is connected to an

external servo loop.

Note 5: Dynamic supply current is higher due to the internal gate charge

being delivered at the switching frequency.

Note 6: The DFN switch on resistance is guaranteed by correlation to wafer

level measurements.

Burst Mode Operation

Start-Up from Shutdown

SW

2V/DIV

2

µs/DIV

3563 G01

50mV/DIV

AC COUPLED

100mA/DIV

RUN

2V/DIV

200mA/DIV

400

µs/DIV

3542 G02

1V/DIV

RUN

2V/DIV

500mA/DIV

400

µs/DIV

3563 G03

1V/DIV

Start-Up from Shutdown