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LM20333 Folha de dados(PDF) 3 Page - Texas Instruments

Nome de Peças LM20333
Descrição Electrónicos  3A Synchronous Buck Regulator with Frequency Synchronization
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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LM20333 Folha de dados(HTML) 3 Page - Texas Instruments

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LM20333
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SNVS558C – MAY 2008 – REVISED JANUARY 2009
PIN DESCRIPTIONS (continued)
Pin(s)
Name
Description
Application Information
19
EN
Enable or UVLO input
An external voltage divider can be used to set the line undervoltage
lockout threshold. If the EN pin is left unconnected, a 2 µA pull-up
current source pulls the EN pin high to enable the regulator.
20
SYNC
Frequency synchronization input
An external clock connected to this pin will set the switching frequency.
If left open the device will operate at approximately 200 kHz.
EP
Exposed
Exposed pad
Exposed metal pad on the underside of the package with a weak
Pad
electrical connection to GND. Connect this pad to the PC board ground
plane in order to improve heat dissipation.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2008–2009, Texas Instruments Incorporated
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