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http://www.union-ic.com Rev.02 Dec.2014

9/18

UM1650 UM1750

Absolute Maximum Ratings (Note 1)

Symbol

Parameter

Value

Unit

Supply Voltage on IN Pin

-0.3 to +7.5

V

V

SHDN

___________

Voltage on SHDN

___________

Pin

-0.3 to +7.5

V

Voltage on FB Pin

-0.3 to +7.5

V

Voltage on OUT Pin

-0.3 to +7.5

V

Output Short-Circuit Duration

Indefinite

θ

JA

Junction Thermal Resistance

(Note 2)

SOT23-3

+225

°C/W

SOT23-5

+215

SOT89-5

+66

DFN6 2.0×2.0

+110

Operating Junction Temperature (Notes 3, 4)

-40 to +125

°C

Storage Temperature Range

-65 to +150

°C

Lead Temperature for Soldering 10 seconds

+300

°C

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be

impaired.

excessive die temperature, and the regulator will go into thermal shutdown.

Specifications over the – 40℃ to 125℃ operating junction temperature range are assured

by design, characterization and correlation with statistical process controls.

Note 4: This IC includes overtemperature protection that is intended to protect the device during

momentary overload

conditions. Junction

temperature

will

exceed

125℃when

overtemperature protection is active. Continuous operation above the specified maximum

operating junction temperature may impair device reliability.