LT7184S datasheet(4/52 Pages) AD

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Data Sheet

LT7184S

analog.com

Rev. 0

4 of 52

ABSOLUTE MAXIMUM RATINGS

TA = 25°C, unless otherwise specified.

Table 1. Absolute Maximum Ratings

PARAMETER

RATING

PVIN0, PVIN1

-0.3V to +20V

Average PVIN Input Supply Current2

EXTVCC

-0.3V to +6V

VSENSE0P, VSENSE1P

-0.3V to +6V

VSENSE0N, VSENSE1N

-0.3V to +0.3V

ITH0, ITH1

-0.3V to +6V

SYNC, PWM_CFG, WP, SHARE_CLK, ALERT, SDA, SCL, FAULT0,

FAULT1

, RUN0, RUN1, PGOOD0, PGOOD1, ASEL, VOUT0_CFG, and VOUT1_CFG

-0.3V to +6V

BOOST0 with respect to SW0

-0.3V to +6V

BOOST1 with respect to SW1

-0.3V to +6V

Operating Junction Temperature 3, 4, 5

-40°C to +150°C

150°C

Storage Temperature Range

-65°C to +150°C

Maximum Peak Re-flow (Package Body) Temperature

260°C

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.

The average input current to each PVIN pin on the LT7184S is a function of the PVIN input voltage, the

programmed output voltage that channels load current, and the efficiency as:

IPVIN =

VOUT × IOUT

PVIN × Efficiency

The output voltage and current can be programmed so that the PVIN input current exceeds the maximum

average current rating for the LT7184S. Exceeding the maximum average input current rating for the LT7184S

can affect device reliability and lifetime.

The LT7184S is specified over the -40°C to +150°C operating junction temperature range. High junction

temperatures degrade operating lifetimes: operating lifetime is derated for junction temperatures greater

than 125°C. 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 impedance,

and other environmental factors.

The LT7184S includes overtemperature protection that is intended to protect the device during momentary

overload conditions. The maximum rated junction temperature is exceeded when this protection is active.

Continuous operation above the specified maximum operating junction temperature will reduce the device's

lifetime.

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