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Data Sheet

LT3046

analog.com

Rev 0

7 of 47

The current-limit programming scale factor is specified while the internal backup current limit is not active.

Note that the internal current limit has foldback protection for VIN - VOUT differentials greater than 11V.

ABSOLUTE MAXIMUM RATINGS

TA = +25°C, unless otherwise specified.

Table 2. Absolute Maximum Ratings

PARAMETER

RATING

IN Pin Voltage

-22V to +22V

EN/UV Pin Voltage

-22V to +22V

IN-to-EN/UV Differential

-22V to +22V

PG Pin Voltage1

-0.3V to +22V

ILIM Pin Voltage1

-0.3V to +1V

PGFB Pin Voltage1

-0.3V to +22V

PGFB Pin Current

-20mA to +20mA

SET Pin Voltage1

-0.3V to +20V

SET Pin Current2

-20mA to +20mA

OUTS Pin Voltage1

-0.3V to +20V

OUTS Pin Current2

-20mA to +20mA

OUT Pin Voltage1

-0.3V to +20V

OUT-to-OUTS Differential3

-1.2V to +1.2V

IN-to-OUT Differential

-22V to +22V

IN-to-OUTS Differential

-22V to +22V

Output Short-Circuit Duration

Indefinite

Operating Junction Temperature4

-40°C to +125°C

Storage Temperature Range

-65°C to +150°C

Parasitic diodes exist internally between the ILIM, PG, PGFB, SET, OUTS, and OUT pins and the GND pin. Do not

drive the ILIM, PG, PGFB, SET, OUTS, and OUT pins more than 0.3V less than the GND pin during a fault

condition. The ILIM, PG, PGFB, SET, OUTS, and OUT pins must remain at a voltage more positive than GND

during normal operation.

SET and OUTS pins are clamped using diodes and two 25Ω series resistors. For less than 5ms transients, this

clamp circuitry can carry more than the rated current. See Figure 66 and the Protection Features section for

more information.

Maximum OUT-to-OUTS differential is guaranteed by design.

The LT3046 is tested and specified under pulse load conditions such that TJ ≈ TA. The LT3046 is tested at TA =

+25°C. Performance of the LT3046 over the full -40°C to +125°C operating temperature range is assured by

design, characterization, and correlation with statistical process controls. The LT3046 is guaranteed over the

full -40°C to +125°C operating TJ range.

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