# Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA

DC-DC boost/buck with stable 3.3V + charger from USB (LiPo,Li-Ion, 1 cell). Ultra-low quiescent (17 μA), current up to 1A

- **Seller:** [Micropowercore](https://www.lectronz.com/stores/micropowercore), Pullach i. Isartal, Bayer, Germany
- **Price:** €16.00 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Power, Components, Sensors
- **Product page:** https://www.lectronz.com/products/micropowercore-charger-dc-dc-boost-bu-k-iq-17-a

## Links

- [Documentation](https://micropowercore.com/files/micropowercore_v1.2.pdf)

## Images

![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0MzIsInB1ciI6ImJsb2JfaWQifX0=--36372a0dc652e717ff3030354b711ab13e498570/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/photo1.jpg)
![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0MzYsInB1ciI6ImJsb2JfaWQifX0=--2ba0e0565cb3ec3d7d3ddec897d3c9c10cbebec0/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/photo2.jpg)
![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0NDAsInB1ciI6ImJsb2JfaWQifX0=--4cee75078c570f4dc6591085dc9c164da8c1452d/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/photo3.jpg)
![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0NDQsInB1ciI6ImJsb2JfaWQifX0=--c0357970bba7d14da935e3962ef65de50d225e0e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/photo4.jpg)
![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0NDgsInB1ciI6ImJsb2JfaWQifX0=--9d0c9274080bd2c3a2572ffb8ac713db5973eff6/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/photo5.jpg)
![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0NTIsInB1ciI6ImJsb2JfaWQifX0=--070307c9236a77f57c6d62cfcf6fba0fb5ffa2e6/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/photo6.jpg)
![Micropowercore Charger + DC-DC boost+buсk,Iq 17 μA](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6Mjk0NTYsInB1ciI6ImJsb2JfaWQifX0=--86b21064527792f67e2bd69d06cc227d5f656f02/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/multimeter1.jpg)

## Description

**What is it?**

This is an ultra low-power power supply and battery charging module designed for ESP32, Arduino, and other microcontroller-based devices. It provides a stable 3.3V output and integrates a lithium-ion/lithium-polymer battery charger (up to 500 mA) with a high-efficiency buck-boost converter.

**Why did I make it?**

Many DIY and IoT projects run on batteries, but typical power solutions are inefficient and waste energy in standby mode. I needed a compact, energy-efficient module for my own projects — one that could deliver stable 3.3V and extend battery life without complex configuration. So I designed this module for developers who care about long-term performance and reliability.

**What makes it special?**

* Ultra-low quiescent current: only ~17 μA in standby
* Smart power path management: switch seamlessly between USB and battery
* High-efficiency buck-boost converter based on TPS63802, provide effective battery life
* Boost mode if Akku less then 3.3 volt (discharged)
* Buck mode if Akku more then 3.3 volt (full charged to 4.2 volt)
* Switch automatically and provide stable 3.3 volt and allow you to use akku more effectively and long time.
* Built-in 1-cell Li-Ion/Li-Po charger
* Compact size: only 3.3 × 1.2 cm
* Current 1 A
* Perfect for low-power sensors, remote IoT nodes, and wearable devices

## Shipping policy

Ships from Germany. Shipping rates: Germany EUR 3.90 (2-5 days), Europe EUR 5.90 (3-13 days), USA EUR 12.90 (10-15 days), Australia / Canada / Hong Kong / India / Japan / New Zealand / Singapore / South Korea / Taiwan EUR 6.90 (3-13 days), rest of world EUR 8.00 (14-18 days). Delivery times are estimates and do not include customs handling. The boards are small: several of them ship in one package at no extra shipping cost.