The Leader in Configurable Mixed Signal ICs

Silego designs and sells highly configurable power, logic, and timing mixed signal IC products referred to as CMICs (Configurable Mixed-signal IC Products). The CMIC products integrate medium precision analog components, discrete digital logic, and passive components into highly configurable small, easy to use, low cost ICs. CMIC products provide customers the benefits of reduced system parts count, lower power consumption, less board space and reduced BOM costs.

David Lenton EPS

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GreenPAK3 Introduction

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Silego... Better Design, Less Parts.

  • Cost effective one-time NVM programmable Mixed Signal Matrix Device
  • Useful for integrating many discrete ICs into a single device
  • User configured and can be programmed in minutes
  • Includes complete design tools

GreenPAK is ideal for replacing:
4 & 8-Bit Microcontrollers, integrating Glue Logic, Low to High Level Shifters, Power-On Resets, Voltage Monitors

GreenPAK 4 20-pin STQFN: 2.0 x 3.0 x 0.55 mm, 0.4 mm pitch
GreenPAK 4 14-pin STQFN:  1.6 x 2.0 x 0.55 mm, 0.4 mm pitch

Benefits Over Traditional IC Design:

  • Smaller PCB footprint
  • Lower Cost
  • Faster Design
  • Design Security
  • Lower Power
  • 100% Tested Solution


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17 Kinsealy Business Park, Co. Dublin, Ireland
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Development Kit


Silego GreenFET3 is the smallest complete load switch with Rds(ON) <7.8 mohm.

  • 1.5x2mm FC-TDFN-8 package
  • 1uA Sleep and 70uA Active Mode power consumption
  • External capacitor to adjust VS ramp rate
  • VDD 2.5 to 5.5V
  • Internal charge pump

GreenCLK3 (GCLK3) is a silicon-based 32.768 kHz crystal replacement technology. Using a single MHz reference (crystal, XO, or TCXO), GCLK3 generates a cost-effective timing solution with a single 32.768 kHz clock output and a single MHz clock output.

  • Stability Over Temperature for 32.768 kHz Applications
    • ±15 PPM 32.768 kHz clock stability over -40C˚ to 85C˚ range
  • Ultra-Low Power Consumption
    • < 0.8 µA for 32.768 kHz in Hibernate Mode
    • < 0.8 mA for MHz & 32.768 kHz in Active Mode

Part Number



N channel Analog Load Switch
Silego CMIC, PWROK Generator and Start Up Latching Circuit
Silego CMIC, LED Driver
Silego CMIC, Power Good Detector
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