PMP9777 Reference Design

Texas Instruments

Getting Power from Earphone Jack Reference Design

Description

This design is for powering a small system attached to a smartphone audio jack.  The reference design includes a charge pump and a boost converter. The charge pump is used to filter AC input into a DC voltage and the ultra-low quiescent current boost converter TPS610981 is used to generate a stable 3.3V.

Features
  • Low input voltage rangeHigh efficiency boost converterSmall solution size
Applications
  • Tablet (multimedia)
  • Digital stethoscope
  • Chromebook & WOA
  • E-reader
  • Smartphone
  • Standard notebook PC
Product Categories
  • Power management

Parts

Part Number Name Companion Part
LMV7271 LMV7271 Buy Datasheet

Bill Of Materials

Download the bill of materials for PMP9777 Download

Schematic

Quickly understand overall system functionality.

Download the schematic for PMP9777

Test Data

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Download the test file for PMP9777

Other Documents

Title Updated Type Size (KB)
PMP9777 Gerber 10 Dec 2015 ZIP 464
PMP9777 CAD Files 10 Dec 2015 ZIP 6146
PMP9777 PCB 10 Dec 2015 PDF 233
PMP9777 Assembly Drawing 10 Dec 2015 PDF 60
PMP9777 BOM 10 Dec 2015 PDF 245
PMP9777 Schematic 10 Dec 2015 PDF 65