I need list of cheap step-up DC-DC, like based on MT3608
There are several cheap step-up DC-DC converters similar to MT3608 that you can consider. Here is a list:

1. XL6009: This is a popular option for stepping up voltages in range of 5-32V. It is widely available and offers high efficiency and stable output.

2. LM2577: This converter operates in the voltage range of 3.5-40V and can provide a maximum output current of 3A. It is an economical and reliable option.

3. LTC1871: This converter can be used to step up voltages in the range of 3.5-30V. It offers good efficiency and is suitable for various applications.

4. AMS1117: While primarily a linear voltage regulator, it can also be configured as a step-up converter by adding a few external components. It is inexpensive and commonly used for low power applications.

5. MP1584: With a voltage input range of 4.5-28V and maximum output current of 3A, this is another low-cost and efficient step-up converter.

6. U3V12F12: This is a compact and cheap step-up converter specifically designed for boosting 3.3V to 12V. It is widely used in applications such as battery-powered systems.

Please note that prices and availability may vary depending on your location and the supplier you choose. It’s always recommended to compare prices and specifications before making a purchase.
more
Certainly! Here are a few more cheap step-up DC-DC converters:

7. XL6005: Similar to XL6009, this converter is suitable for raising voltage levels in the range of 5-32V. It is commonly used in battery-powered applications.

8. MP2307: This converter operates in the input voltage range of 4.75-23V and provides a maximum output current of 3A. It is cost-effective and widely available.

9. MT34063: This is another popular and inexpensive step-up converter. It can convert voltages in the range of 3-30V and is well-known for its simplicity and versatility.

10. TPS61200: This converter can step up voltages in the range of 0.3-5.5V and is commonly used for boosting power from low-voltage sources such as batteries. It offers good efficiency and a small form factor.

11. SY8009: This converter is designed for boosting voltages in the range of 2-8V. It is known for its low quiescent current and thermal shutdown protection, making it suitable for portable devices.

12. LM2705: This is a compact and low-cost step-up converter that can operate in the input voltage range of 1.6-5.5V. It is commonly used in battery-powered applications and offers excellent efficiency.

Remember to carefully check the specifications and features of each converter to ensure they meet your specific requirements.
more with more hight output voltage
Certainly! Here are a few more cheap step-up DC-DC converters with higher output voltages:

13. SX1308: This converter is capable of stepping up voltages from 2V to as high as 24V. It is an inexpensive option suitable for various applications.

14. Boost XL6004: This step-up converter is similar to XL6009 but has a higher output voltage range, allowing it to raise voltages up to 35V.

15. XL6001: This converter offers an output voltage range of up to 38V, making it suitable for applications requiring higher voltages.

16. LTC1872: This is a versatile step-up converter with an output voltage range of 3.3-60V. It offers high efficiency and excellent performance.

17. XL6007: This converter can step up voltages from 3V to a maximum of 35V. It is a popular choice for applications requiring higher output voltages.

18. LM2587: This is a robust and cost-effective step-up converter that can provide output voltages up to 40V. It offers good efficiency and stable performance.

19. NCP1402: This is a boost converter capable of stepping up voltages from as low as 0.8V to a maximum of 5V. It is commonly used in low-power applications.

20. XL6002: This converter has an output voltage range of up to 50V. It is suitable for various projects where higher voltages are required.

Remember to carefully consider the input and output voltage requirements of your specific application and choose a converter that meets those requirements.