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Small green circuit board with micro-USB port and adjustable boost converter components

JacobsParts Inc.

JacobsParts Inc. TP4056 MT3608 Step-Up Battery Charger Module 3.7V 5V 9V 12V 27V

SKU CH-1P6P-NW6SS

Combines a TP4056 charger and MT3608 boost circuit to make low-power DC devices USB-rechargeable with adjustable 4.3-27V output up to 7W

  • TypeStep-Up Voltage Regulator
  • Combines TP4056 charger with MT3608 boost circuit
  • Adjustable output from 4.3 to 27V DC
  • Up to 7W output at 5V 1.4A or 12V .6A
  • Charges 3.7V battery at 1A max current
  • Compact 3.3 by 2.3cm module size

Compact USB-rechargeable power module

This module pairs a TP4056 charger with an MT3608 boost converter so a single 3.7V lithium cell can supply adjustable output from 4.3V to 27V. It accepts 4.5V to 8V DC input and charges the cell at up to 1A with a 4.2V termination voltage. The board measures 3.3cm by 2.3cm and fits inside small enclosures.

Upgrading from fixed-voltage boost boards

Unlike single-output boost modules this unit adds on-board charging so the battery can be replenished through the same micro-USB supply that powers the load. The jump is worth it when a project needs both uninterrupted operation and a simple way to top up the cell without removing it.

Sustained load behaviour

Maximum continuous output is about 7W, delivered as 5V at 1.4A, 9V at .8A or 12V at .6A while the battery discharge current stays within the 2A limit. Under heavy load the boost converter runs warm and voltage may sag if the cell voltage drops near the lower end of its range. The module is not suited for loads that regularly exceed the 7W rating or require precise regulation at the extremes of the adjustment range.

Highlights

  • Combines TP4056 charger with MT3608 boost circuit
  • Adjustable output from 4.3 to 27V DC
  • Up to 7W output at 5V 1.4A or 12V .6A
  • Charges 3.7V battery at 1A max current
  • Compact 3.3 by 2.3cm module size

Specifications

TypeStep-Up Voltage Regulator

Questions about this item

What size mounting holes or board dimensions should I allow for the 3.3 x 2.3 cm module?

The PCB measures 3.3 by 2.3 cm; allow a few millimetres extra for the Micro-USB connector and the boost inductor overhang.

Which solder pads or headers carry the 4.5-8 V DC input and the adjustable 4.3-27 V output during installation?

Solder the DC source to the IN+ and IN- pads, set the output with the on-board trimmer, then take the boosted voltage from the OUT+ and OUT- pads.

When should I replace the 3.7 V lithium cell if the 1 A charge or 2 A discharge current drops off?

Swap the cell once it no longer reaches the 4.2 V termination voltage or cannot sustain the 2 A discharge rating under load.

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