Replacement IC for Christmas Decoration motor

Semiconductor Integrated Circuits (ICs)
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Hi All,

Sinds i’m new here let me introduce myself. I’m Virgil from the Netherlands 44 years and spent a lot of time on fixing electronics and gameconsoles. I really love micro soldering.

I’m looking for a replacement IC for a christmas decoration which has a small motor and is controlled by this ic

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It came of this PCB

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The poweradapter shows 4.5v and if i use my lab powersupply the motor works it’s just the IC which does not sent the current to the motor.

I’ve asked chatgpt about a replacement ic for this and it replies the message below.

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This chip is highly likely to be a variant of a low-voltage H-bridge motor driver, and based on its pinout and function, it closely matches:

[TB6612FNG-compatible] SOT-23-6 Mini Motor Driver ICs, such as:

  • SGM66031
  • HT6828
  • MX1508 (SOT-23-6 versions)

These chips are widely used in toys and decorations for simple motor control.
= = =

i’ve been looking for months now but still can not find a replacement or solution.

Can someone here maybe identify the ic and knows how to find a replacement?

Thanks in advance!

Virgil

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Hi Virgil,
I’d suggest that the H-bridge chip is the other one on the board (G134JF marking). This 62B47 may easily be a small microcontroller. If so, it may be possible to replace it with, say, a small form factor Arduino (for which you need to write your own code, offering an opportunity to enhance the excitement the ornament offers). In addition, separating the supply voltage for the bridge and boosting it up may make the motor running faster, giving an extra spin to the Xmas mood.
Cheers, heke

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Hi Heke, Thx for your fast reply to my post. Seems like a fun project to learn but this is not my own device so i just want to replace the IC so it moves the lift again and that’s about it tbh.

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Virgil

Thank you for contacting DigiKey , sorry I am not finding any information on the 62B47 IC on this board , if it is a micro controller it would have to be programmed as well for it to function , you may want to contact the OEM to see if it is possible to get a replacement from them .

Thanks Craig

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Hi Virgil,
If it is an MCU, then finding a direct replacement is next to not easy.
PIC10F220 has matching package and pinout. You could try that. Providing that the S1 and S2 are just limit switches, then the needed code is just a couple of lines (reversing the motor direction when a limit is reached, and have a timeout for safety). The trickiest part is to arrange the flashing setup (= moving the code to the chip).

Cheers, heke

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Hi Heke, Thank you for your replies and suggestions. I do not have the tools or knowledge to reprogram a blanc chip so that’s not a solution for me. But i’m wondering if it would work if i solder a wire between the VDD (positive) and the S1 for the motor controls? (S1 and S2 go to a switch which can be set to 3 positions) i think the funtions are turn left, turn right and off. Maybe if i connect the VDD to S1 the motor will just function in one direction?

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Hi @Virgil ,
I think it won’t (hopefully) hurt to test what you are proposing. Just wondering what is the purpose and function of the two chips then. Perhaps chips + 1-pole switch is a cheaper configuration than having 2P3T (on-off-on) switch? If the motor runs normally, just remove the circuit board and hook the motor directly to S1. If the motor runs too fast, then the chips are actually used for speed reduction (PWM).
Cheers, heke