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LM20333 Folha de dados(PDF) 3 Page - Texas Instruments |
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LM20333 Folha de dados(HTML) 3 Page - Texas Instruments |
3 / 30 page LM20333 www.ti.com 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 Submit Documentation Feedback 3 Product Folder Links: LM20333 |
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Descrição semelhante - LM20333_14 |
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