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LP38851 Datasheet(PDF) 2 Page - Texas Instruments |
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LP38851 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 29 page TAB IS GND BIAS OUT GND SS 1 2 3 4 5 IN 6 7 ADJ EN TAB IS GND BIAS OUT GND SS 1 2 3 4 5 IN 6 7 ADJ EN DAP Connect to GND IN EN N/C SS 5 6 7 8 OUT ADJ GND BIAS 1 2 3 4 IN BIAS GND OUT VOUT VIN VBIAS CIN 10 PF Ceramic COUT 10 PF Ceramic CBIAS 1 PF GND GND LP38851-ADJ ADJ R1 R2 CFF VEN SS CSS EN LP38851 SNVS492C – JUNE 2007 – REVISED APRIL 2013 www.ti.com TYPICAL APPLICATION CIRCUIT Connection Diagram Figure 3. 8-Lead SO PowerPad - Top View Figure 1. 7-Lead PFM - Top View See DDA Package See KTW0007B Package Figure 2. 7-Lead SFM - Top View See NDZ0007B Package PIN DESCRIPTIONS SFM PFM SO PowerPad Pin Pin Description Pin # Pin # Pin # Symbol Soft-Start capacitor connection. Used to control the rise time of 1 1 5 SS VOUT at turn-on. 2 2 6 EN Device Enable, High = On, Low = Off. 3 3 7 IN The unregulated voltage input 4 4 4 GND Ground 5 5 1 ADJ The feedback connection to set the output voltage 6 6 2 OUT The regulated output voltage 7 7 3 BIAS The supply for the internal control and reference circuitry. - - 8 N/C No internal connection The SFM and PFM TAB is a thermal and electrical connection that is physically attached to the backside of the die, and used as a TAB TAB - TAB thermal heat-sink connection. See APPLICATION INFORMATION for details. 2 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated Product Folder Links: LP38851 |
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