Category Archives: Eagle PCB

3.3v Low Dropout Regulator (LDO) – MCP1826 / MCP1826

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MCP1826 or MCP1826S is a very simple and easy to use LDO or Low Dropout Regulator from Microchip Technology. There are both fixed voltage and variable voltage versions available. The company also makes custom chips. It’s features are:
  • 1000 mA Output Current Capability
  • Input Operating Voltage Range: 2.3V to 6.0V
  • Adjustable Output Voltage Range: 0.8V to 5.0V (MCP1826 only)
  • Standard Fixed Output Voltages:
    • 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
  • Low Dropout Voltage: 250 mV Typical at 1000 mA
  • Typical Output Voltage Tolerance: 0.5%
  • Stable with 1.0 μF Ceramic Output Capacitor
  • Fast Response to Load Transients
  • Low Supply Current: 120 μA (typ)
  • Low Shutdown Supply Current: 0.1 μA (typ) (MCP1826 only)
  • Fixed Delay on Power Good Output (MCP1826 only)
  • Short Circuit Current Limiting and Overtemperature Protection
  • TO-263-5 (DDPAK-5), TO-220-5, SOT-223-5 Package Options (MCP1826).
  • TO-263-3 (DDPAK-3), TO-220-3, SOT-223-3 Package Options (MCP1826S).
MCP1826 has  a POWERGOOD / ADJUST (depending on version) and SHUTDOWN. The MCP-1826S version is more simple and has only IN, OUT, GND                                                                      MCP-1826S                                                                    MCP-1826 Here are the Eagle files for  MCP-1826S   and    MCP-1826 Here is the Datasheet

Eagle PCB Library for ESP8266 ESP-12

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Eagle PCB Library for ESP-12

Please note though the library file is named as esp-12e, but it is for esp-12. The ESP-12E version will be published soon.

Somehow I couldn’t find a proper a library on the internet. I found only one but that had wrong pin spacing.

Download the esp-12e eagle library here

For more details on ESP-8266 visit this link

ESP8266 Hello World   ESP-8266 AT Commands  GPS Tracker using NEO 6M and ESP-12

 

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Eagle PCB Library Atmega8 TQFP32

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The Atmega8 TQFP32 package that is mostly available, for Eagle PCB, has the pins too thick to be handled in DIY or Homemade PCBs. The Atmega8-AI package in the attached library has been modified such that the pins are wide enough for proper placement/soldering of the chip and thin enough so that there is sufficient room between two adjacent pins while soldering the chip by hand.

Atmega8 TQFP32

 

 

Eagle Library for XC6210 LDO Voltage Regulator SOT-89-5 Package

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XC6210 is a LDO Voltage regulator from Torex Semiconductor. It is available for various preset voltages starting from 0.80V to 5.00V at 0.05v increments. It is capable of delivering 700mA. The 3.3v version has typical drop of 70mV at 100mA. Here is the datasheet attached.

The chip is a bit delicate, I damaged two chips while soldering back after desoldering. And strangely in both cases the same pin broke.

The attached eagle library is for the SOT-89-5 package – XC6210 SOT-89-5 Eagle Library

Eagle PCB Library for MCP1826 SOT-223-5 Package

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MCP1826 is a LDO Voltage Regulator from Microchip. Here is the datasheet attached. It comes in various packages. It comes in various configurations. The attached Eagle Library is for the SOT-223-5 package. That package has 6 pins including the tab and has “Chip Enable” and “Power Good” function. It is capable of delivering 1A. And at 1 amp the drop will be typically 250mV.

MCP1826 Eagle Library