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uP1712 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - High-Efficiency Synchronous-Rectified Buck Converter - uPI Semiconductor

भाग संख्या uP1712
समारोह High-Efficiency Synchronous-Rectified Buck Converter
मैन्युफैक्चरर्स uPI Semiconductor 
लोगो uPI Semiconductor लोगो 
पूर्व दर्शन
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<?=uP1712?> डेटा पत्रक पीडीएफ

uP1712 pdf
uP1712
Typical Application Circuit
Active High
VIN
CIN
22uF
R3
10
C3
0.1uF
EN LX
VIN
POK
VCC FB
PGND AGND
uP1712PQDD
2.2uH
100K
R2
100K
C4
Option
R1
100K
VOUT
COUT
44uF
Functional Pin Description
Pin No.
uP1712PQDD
uP1712PSU8/
uP1712QSU8
Pin Name Pin Function
1,2,3
7 PGND Power Ground. Connect to the output and input capacitors return.
Feedback Input. This pin is the inverting input of the error amplifier.
4 8 FB FB senses the switcher output through an external resistor divider
network.
5
1
AGND
Signal Ground. Connect the return of all small signal componenets to
this pin.
6,16 2 NC Not Internally Connected.
7 3 EN Chip Enable (Active High). Logic low shuts down the converter.
9
--
VCC
Bias Supply. Supplies power for the internal circuitry. Connect to input
power via low pass filter with decoupling to AGND.
10,11,12
5
Power Supply Input. Input voltage that supplies current to the output
VIN voltage and powers the internal control circuit. Bypass the input voltage
with a minimum 10uF X5R or X7R ceramic capacitor.
13,14,15
6
LX Internal Switches Output. Connect these pins to the output inductor.
8
4
POK
Power OK Indication (for uP1712PQDD and uP1712PSU8 Only).
This pin is set high impedance after soft start end and no fault occurs.
Exposed Pad
Power Ground. The exposed pad should be well soldered to PCB
with multiple vias to ground plane for optimal thermal performance.
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. P01, File Name: uP1712-DS-P0100
2

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uP1712High-Efficiency Synchronous-Rectified Buck ConverteruPI Semiconductor
uPI Semiconductor
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uPI Semiconductor


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