UMC33167L-TA5-T Datasheet, PDF (8/8 Pages) Unisonic Technologies – LINEAR INTEGRATED CIRCUIT

UMC33167
Advance
LINEAR INTEGRATED CIRCUIT
 APPLICATION INFORMATION(Cont.)
Undervoltage Lockout
An Undervoltage Lockout comparator has been incorporated to guarantee that the integrated circuit is fully
functional before the output stage is enabled. The internal reference voltage is monitored by the comparator which
enables the output stage when V_CC exceeds 5.9V. To prevent erratic output switching as the threshold is crossed,
0.9V of hysteresis is provided.
Thermal Protection
Internal Thermal Shutdown circuitry is provided to protect the integrated circuit in the event that the maximum
junction temperature is exceeded. When activated, typically at 170°C, the latch is forced into a ‘reset’ state, disabling
the output switch. This feature is provided to prevent catastrophic failures from accidental device overheating. It is
not intended to be used as a substitute for proper heatsinking. The UTC MC34167 is contained in a 5-lead TO-220
type package. The tab of the package is common with the center pin (Pin 3) and is normally connected to ground.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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