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http://www.union-ic.com Rev.07 Dec.2014

7/19

UM153xx/UM154xx

Absolute Maximum Ratings (Note 1)

Symbol

Parameter

Value

Unit

Supply Voltage on IN Pin

-0.3 to +6.5

V

Voltage on OUT Pin

-0.3 to +6.5

V

Voltage on EN Pin

-0.3 to +6.5

V

Operating Junction Temperature (Notes 2, 3)

-40 to +125

°C

Storage Temperature Range

-65 to +150

°C

Lead Temperature for Soldering 10 seconds

+300

°C

Recommended Operating Conditions (Note 4)

Parameter

Value

Supply Input Voltage

2.2 V to 5.5V

Junction Temperature Range

-40°C to 125°C

Ambient Temperature Range

-40°C to 85°C

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

impaired.

Note 2: The device is guaranteed to meet performance specifications from -40°C to +85°C.

Specifications over the -40°C to 125°C operating junction temperature range are

guaranteed by design, characterization and correlation with statistical process controls.

Note 3: This IC includes over temperature protection circuit inside that is intended to protect the

device during momentary overload conditions. Over temperature protection trip point is

around 160°C. Continuous operation above the specified maximum operating junction

temperature may impair device reliability.

Note 4: The device is not guaranteed to function outside its operating conditions.

Internal Block Diagram

Current

Limit

Voltage

Reference

VIN

VOUT

GND

+

-

EN

On/Off

Control