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AP65550 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - 650kHz ADAPTIVE COT STEP-DOWN CONVERTER - Diodes

भाग संख्या AP65550
समारोह 650kHz ADAPTIVE COT STEP-DOWN CONVERTER
मैन्युफैक्चरर्स Diodes 
लोगो Diodes लोगो 
पूर्व दर्शन
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AP65550 pdf
AP65550
Pin Descriptions
Pin
Name
EN
FB
VREG5
SS
GND
SW
BS
VIN
EP
Pin Number
SO-8EP
Function
1
Enable input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on the
regulator, drive it low to turn off. Pull up with 100kΩ resistor for automatic startup.
2
Feedback Input. FB senses the output voltage and regulates it. Drive FB with a resistive voltage
divider connected to it from the output voltage.
3
Internal power supply output pin to connect an additional capacitor. Connect a 1μF (typical) capacitor
as close as possible to the VREG5 and GND. This pin is not active when EN is low.
4
Soft-start control input pin. SS controls the soft start period. Connect a capacitor from SS to GND to
set the soft-start period.
5 Ground pin is the main power ground for the switching circuit.
Power Switching Output. SW is the switching node that supplies power to the output. Connect the
6 output LC filter from SW to the output load. Note that a capacitor is required from SW to BS to power
the high-side switch.
Bootstrap pin. A bootstrap capacitor is connected between the BS pin and SW pin. The voltage across
7 the bootstrap capacitor drives the internal high-side NMOS switch. A 0.1μF (typical) capacitor is
required for proper operation
8
Supply input pin. A capacitor should be connected between the VIN pin and GND pin to keep the DC
input voltage constant.
Connect the exposed thermal pad to GND on the PCB
Functional Block Diagram
Figure 2. Functional Block Diagram
AP65550
Document number: DS36336 Rev. 2 - 2
2 of 14
www.diodes.com
April 2014
© Diodes Incorporated
http://www.Datasheet4U.com

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डाउनलोड[ AP65550 Datasheet.PDF ]


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