LT3045 datasheet(14/36 Pages) LINER

14 / 36 page

LT3045-1

30451fa

For more information www.linear.com/LT3045-1

PIN FUNCTIONS

GND (Pin 9, Exposed Pad Pin 13): Ground. The exposed

backside is an electrical connection to GND. To ensure

proper electrical and thermal performance, solder the

exposed backside to the PCB ground and tie it directly

to the GND pin.

OUTS (Pin 10): Output Sense. This pin is the noninvert-

ing input to the error amplifier. For optimal transient

performance and load regulation, Kelvin connect OUTS

directly to the output capacitor and the load. Also, tie the

GND connections of the output capacitor and the SET pin

capacitor directly together. A parasitic substrate diode

exists between OUTS and GND pins of the LT3045-1; do

not drive OUTS more than 0.3V below GND during normal

operation or during a fault condition.

OUT (Pins 11, 12): Output. These pins supply power to the

load. For stability, use a minimum 10µF output capacitor

with an ESR below 20mΩ and an ESL below 2nH. Large

load transients require larger output capacitance to limit

peak voltage transients. Refer to the Applications Informa-

tion section for more information on output capacitance. A

parasiticsubstratediodeexistsbetweenOUTandGNDpins

of the LT3045-1; do not drive OUT more than 0.3V below

GND during normal operation or during a fault condition.

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