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3515A-D14-R Datasheet(PDF) 7 Page - Unisonic Technologies

Part # 3515A-D14-R
Description  PC POWER SUPPLY SUPERVISOR
PDF  9 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

3515A-D14-R Datasheet(HTML) 7 Page - Unisonic Technologies

  3515A-D14-R Datasheet HTML 1Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 2Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 3Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 4Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 5Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 6Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 7Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 8Page - Unisonic Technologies 3515A-D14-R Datasheet HTML 9Page - Unisonic Technologies  
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3515A
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
7 of 9
www.unisonic.com.tw
QW-R502-105,A
APPLICATION INFORMATION
IL
RL
C
+
V5
R
-
I5
8×IREF
(IREF=VREF/RI)
RL: inductor DC resistor
If IL* RL＞ (8 * IREF) * R, then OCP active.
And the capacitor C is used to avoide power on fail or dynamic load fail.We suggest C > 1µF.
EX：How to select the resistor of R? Assume RI=30KΩ, RL=3mΩ, OCP=20A。
Sol：R = ( IL * RL ) / ( 8 * IREF )
= ( 20A * 3mΩ) / { 8 * ( 1.2V / 30KΩ)}
= 187.5Ω



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