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DC-DC Charge/Discharge Integrated Module (5V/2A)
1.790 Ft
Taxes included.
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Tiny 1-cell Li-ion/LiPo power board that charges your 3.7 V cell and boosts to 5 V for your load. Up to 2.1 A 5 V output, battery protection on-board, button-controlled output, and 4-level LED fuel gauge. Great for DIY power banks, sensor nodes, and portable gadgets.
Highlights
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Charge + boost on one board (simultaneous supported)
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5 V output up to 2.1 A, stable during plug/unplug
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Built-in protections: OVP/OCP/OTP/short-circuit
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Button (KEY) to enable/disable output; 4-level charge/discharge LEDs
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Ultra-small: 25 × 16 mm, 2.54 mm pad pitch
Specs
| Property | Value |
|---|---|
| Battery | 1× Li-ion/LiPo (3.7 V nominal, 4.2 V full) |
| Charge Input | 4.6–5.4 V (typ. 5 V), 2–3 A capable source |
| Charge Current | 0–2.1 A (CC/CV to 4.2 V ±1%) |
| Discharge (to load) | 5 V, 0–2.1 A (boost) |
| Extra Discharge Headroom | Internal path rated up to ~3.5 A (see thermals) |
| Efficiencies | Boost ≤92% • Charge ≤91% • Discharge ≤96% |
| Quiescent | Charge ~100 µA • Discharge ~50 µA |
| Indicators | 4× LEDs for charge/discharge level + status |
| Pads | 2.54 mm pitch, Ø1.0 mm holes |
| Size / Temp | 25 × 16 mm, −20…+85 °C |
Pads / Pinout
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IN+ / IN− → 5 V input (USB/5 V rail) for charging
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BAT+ / BAT− → single Li-ion/LiPo cell
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5V / GND → boosted 5 V output to your load
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KEY → onboard pushbutton controls 5 V output (logic not exposed)
Usage modes (quick)
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Charge + Power Load: connect 5 V to IN, cell to BAT, load to 5V.
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Charge-only: connect 5 V to IN, cell to BAT, leave 5V unused.
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Boost-only: connect cell to BAT, use 5V to power your circuit.
What’s in the Pack
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1× DFR1026 5 V/2 A charge/boost module