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UC3800G-S08-R датащи(PDF) 8 Page - Unisonic Technologies

номер детали UC3800G-S08-R
подробное описание детали  LOW COST POWER-SAVING MODE PWM CONTROLLER
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3800G-S08-R датащи(HTML) 8 Page - Unisonic Technologies

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UC3800
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
8 of 10
www.unisonic.com.tw
QW-R103-083.a
OPERATION DESCRIPTION (Cont.)
Protection Controls
The IC takes on more protection functions such as OVP, OLP and OTP etc. In case of those failure modes for
continual blanking time, the driver is shut down. Driver is reset after failure is eliminated.
OVP
The OVP will shut down the switching of the power MOSFET whenever VDD >VOVP. The OVP event as followed
Fig.3.
Fig.3 OVP case
Fig.4 OLP case
OLP
OLP will shut down driver when VFB> VOLP for continual time. The OLP event as followed Fig.4.
LNO-OVP and BNO
LNO will shut down driver when LNO> VTH_LNO or LNO<VTH_BNO for continual time.
OTP
The internal OTP circuit is implemented to detect the Temperature. As soon as the Temperature is higher than the
145
C, the driver will shut down.
PCB Layout Note
Noise from the current sense or the control signal can cause significant pulse width jitter in
continuous-conduction mode, and slope compensation helps alleviate these problems. Good placement and layout
practices should be followed. Avoiding long PCB traces and component leads, locating compensation and filter
components near the UTC UC3800, and increasing the power MOS gate resistance is advised.


Аналогичный номер детали - UC3800G-S08-R

производительномер деталидатащиподробное описание детали
logo
Unisonic Technologies
UC3800G-S08-R UTC-UC3800G-S08-R Datasheet
221Kb / 10P
   LOW COST POWER-SAVING MODE PWM CONTROLLER
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