LTM4693

3

Rev. 0

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ELECTRICAL CHARACTERISTICS

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 LTM4693 is tested under pulsed load conditions such

specifications over the 0°C to 85°C internal operating temperature

range. Specifications over the full –40°C to 125°C internal operating

temperature range are assured by design, characterization and correlation

with statistical process controls. The LTM4693I is guaranteed to meet

specifications over the full –40°C to 125°C internal operating temperature

range. Note that the maximum ambient temperature consistent with

these specifications is determined by specific operating conditions in

conjunction with board layout, the rated package thermal resistance and

other environmental factors.

Note 3: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions. The maximum

rated junction temperature will be exceeded when this protection is active.

Continuous operation above the maximum operating junction temperature

may impair device reliability or permanently damage the device.

ambient temperature.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

l

2.6

5.5

V

Output Voltage Range

l

1.8

5.5

V

Output DC Voltage

3.3

V

Feedback Pin Voltage

l

0.98

1.0

1.02

V

RUN/UVLO Pin Rising Threshold

l

1.16

1.2

1.24

V

RUN/UVLO Pin Falling Threshold

l

1.06

1.1

1.16

V

RUN/UVLO Pin Input Leakage Current

RUN/UVLO = 5V

1

50

nA

RUN/UVLO Pin Shutdown Threshold

l

0.27

0.45

0.60

V

RUN/UVLO = 0V

1

2

µA

Input Supply Bias Current

20

mA

MODE = GND

15

µA

Output Current Limit

3.5

A

Line Regulation Accuracy

l

0.06

0.06

0.15

0.7

%/V

%/V

Load Regulation Accuracy

l

0.1

1

%

Output Ripple Voltage

5

mV

Switching Frequency

l

1.9

2.2

2.5

MHz

Oscillator Programmable Frequency Range

1

4

MHz

MODE/SYNC Applied Clock Frequency

l

1

4

MHz

Soft-Start Period

2.2

ms

External SS Regulation Voltage

Capacitor to GND Sets SS Time

1

V

Feedback Pin Input Current

0

50

nA