Data Sheet

LTM4640

analog.com

Rev. 0

6 of 38

ABSOLUTE MAXIMUM RATINGS

TA = 25°C unless otherwise specified.

Table 2. Absolute Maximum Ratings

PARAMETER

RATING

VIN

–0.3V to 22V

VOUT

–0.3V to 3.6V

INTVCC

–0.3V to 3.6V

RUN

–0.3V to 20V

PGOOD, FREQ, COMPa, COMPb,

PHMODE, CLKOUT, FB

–0.3V to 3.6V

MODE/CLKIN, TRACK/SS

–0.3V to INTVCC

VOSNS+

–0.3V to 3.6V

VOSNS–

–0.3V to 0.3V

Internal operating temperature

range 1,2

–40°C to 125°C

Storage temperature range

–55°C to 125°C

Peak solder reflow body

temperature

250°C

1

The LTM4640, including the E-grade and I-grade parts (see Table 14), is tested under pulsed load conditions

such as that TJ ≈ TA. The LTM4640E is guaranteed to meet performance specifications over the 0°C to 125°C

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

range are assured by design, characterization, and correlation with statistical process controls. The

LTM4640I 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.

2

The LTM4640, includes overtemperature protection that is intended to protect the device during momentary

overload conditions. The junction temperature exceeds 125°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction temperature may impair the

device's reliability.

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These

are stress ratings only, functional operation of the product at these or any other conditions above those indicated in

the operational section of this specification is not implied. Operation beyond the maximum operating conditions for

extended periods may affect product reliability.