Multiple Output Power Source – Dual 10V (+/-10V), 5V DC, 3.3V DC from 9V Battery 

  • Rajkumar Sharma
  • 127 Views
  • easy
  • Tested
  • SKU: EL117913
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This is a multiple output power converter module that provides +/-10V (Dual 10V), 5V DC, and 3.3V DC from a 9V PP3 battery. This is a very useful project that has been designed for low-load current applications. Dual +/-10V output from a 9V battery is a key feature of the project. The battery holder can be mounted on the backside of the PCB. An onboard slide switch provides power ON/OFF. Onboard LED indicates the power. LM1117-5V chip provides 5V DC output from 9V Battery, further, an LM1117-3.3V regulator is provided to step down the 5V to 3.3V DC. MAX680 charge pump chip provides +/-10V from 5V.

The MAX680 is a monolithic, CMOS, dual charge-pump voltage converter that provides ±10V outputs from a +5V input voltage. The MAX680 provides both a positive step-up charge pump to develop +10V from +5V input and an inverting charge pump to generate the -10V output. This chip has an on-chip, 8kHz oscillator. The output source impedances are typically 150Ω, providing useful output currents up to 10mA. The low quiescent current and high efficiency make this device suitable for a variety of applications that need both positive and negative voltages generated from a single supply.

Features

  • Output +/-10V Load Up to 10mA, 5V DC Load Up to 150mA, 3.3V Load Up to 150mA
  • Input Supply 9V Battery (Alkaline Battery is preferable)
  • On Board ON/OFF Slide Switch
  • On Board Power LED
  • Header Connectors for Easy Connection
  • On Board Battery Holder
  • Very Compact Design
  • PCB Dimensions 56.04 x 31.59 mm

Schematic

Parts List

NOQNTY.REF.DESCMANUFACTURERSUPPLIERPART NO
11CN19 V BATTERY HOLDERKEYSTONEDIGIKEYNNO 36-1294-ND
21CN23 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
31CN34 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5317-ND
44C1,C3,C4,C510uF/25V SMD ELECTROLYTICNICHICON493-10142-1-ND
52C2,C60.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
61D1LED LED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
71J1DNPDO NOT INSTTAL
81R11K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
91SW1EG1917-ND SLIDE SWITCHE SWITCHDIGIKEYEG1917-ND
101U1LM117-5V REGULATORTIDIGIKEYLM1117MPX-5.0CT-ND
111U2MAX680MAXIMDIGIKEYMAX680EPA+-ND
121U3LM117-3.3VDIODE INCORPORATIONDIGIKEYAZ1117IH-3.3TRG1DICT-ND

Connections



Gerber View

Photos

Video

MAX680 Datasheet

MAX680-MAX681

PCB

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