LTC3124 datasheet(4/36 Pages) AD

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LT3120

Rev. 0

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PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

N-Channel Switch Resistance

Switch A (PVIN to SW1)

Switch B (SW1 to PGND)

Switch C (SW2 to PGND)

Switch D (SW2 to PVOUT)

mΩ

N-Channel Switch Leakage

PVIN = PVOUT = 24V; SW1 = SW2 = 0V

µA

VCC Regulation Voltage

3.6

3.73

3.86

VCC Dropout Voltage

ICC = 50mA, VIN = 3.6V

100

VCC Current Limit

100

VCC Reverse Current

VCC = 5V, VIN = 3V

µA

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the specified operating

temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN = 12V, PVOUT = 5V unless otherwise stated.

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 LT3120J is guaranteed to meet performance specifications

over the –40°C to 150°C operating junction temperature ranges. High

junction temperatures degrade operating lifetimes; operating lifetime is

derated for junction temperatures greater than 125°C.

Note 3: Minimum input voltage is governed by the VCC UVLO threshold. If

VCC is maintained through external bootstrapping, the part will continue to

operate until power transfer to the output is no longer possible.

Note 4: Switch timing measurements are made in an open-loop test

configuration. Timing in the application may vary somewhat from these

values due to differences in the switch pin voltage during the non-overlap

durations when switch pin voltage is influenced by the magnitude and

direction of the inductor current.

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