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HFC0300 Datasheet(PDF) 5 Page - Monolithic Power Systems

No. de Pieza. HFC0300
Descripción  Variable Off Time Controller
Descarga  21 Pages
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Fabricante  MPS [Monolithic Power Systems]
Página de inicio  http://www.monolithicpower.com
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HFC0300 Datasheet(HTML) 5 Page - Monolithic Power Systems

 
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HFC0300– VARIABLE OFF TIME CONTROLLER
HFC0300 Rev. 1.0
www.MonolithicPower.com
5
9/23/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved
ELECTRICAL CHARACTERISTICS (continued)
VCC=12V, TA=25°C, unless otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Driving Signal (Pin DRV)
Sourcing Resistor
RH
10
Sinking Resistor
RL
3
VDRIVE Clamp
VDRIVE
Vcc=18V
13.7
V
PIN FUNCTIONS
SOIC-7
Pin #
Name
Description
1
DRV
Drive. Output of the drive signal.
2
CS
Current Sense Input.
3
GND
Ground.
4
COMP
Switching Frequency Set. A feedback voltage of 0.85V will trigger overload
protection, and a feedback voltage of 3.1V will trigger a burst mode operation.
5
FSET
Frequency Set. Maximum switching frequency set by a capacitor.
6
VCC
IC Supply. Connected to an external bulk capacitor. If an auxiliary winding brings
this pin above 24V, the controller latches off.
8
HV
High-Voltage Source. Input for the start-up high voltage current source.


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