TPS61090-based DC/DC boost converter that runs from 1.8V+ input and outputs 5.2V at up to 500mA via USB-A. Synchronous conversion with low-battery detection; the slightly elevated output compensates for cable voltage drop on 5V loads.
Battery input for the boost converter. Adafruit states BAT can range from 1.8V to 5V and recommends short battery wires.
Power ground. Adafruit states the boost converter is not isolated, so input ground and output ground are the same.
Boosted output. Adafruit states the running output is approximately 5.2V and may dip toward 5V as current draw rises over 500mA.
Enable input. Adafruit states EN is pulled high to VBAT by default and the booster turns off when EN is connected to ground.
Low Battery Output. Adafruit states LBO is pulled high to BAT by default and drops to 0V when low battery is detected under 3.2V.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| BAT | power | Battery input for the boost converter. Adafruit states BAT can range from 1.8V to 5V and recommends short battery wires. | 1.8V to 5V input, source-backed by Adafruit PowerBoost pinouts guide | |
| GND | ground | Power ground. Adafruit states the boost converter is not isolated, so input ground and output ground are the same. | 0V ground reference | |
| 5V | power | Boosted output. Adafruit states the running output is approximately 5.2V and may dip toward 5V as current draw rises over 500mA. | approximately 5.2V boosted output, source-backed by Adafruit PowerBoost pinouts guide | |
| EN | control | Enable input. Adafruit states EN is pulled high to VBAT by default and the booster turns off when EN is connected to ground. | pulled high to VBAT by default | |
| LBO | signal | Low Battery Output. Adafruit states LBO is pulled high to BAT by default and drops to 0V when low battery is detected under 3.2V. | high to BAT by default, drops to 0V below 3.2V low-battery threshold |
I2C · USB · 5 V · Module
Verify supply voltage and logic levels before powering up.
Module pins: BAT, 5V, GND, LBO. Schematik maps them to your board in the app.
Single-cell LiPo chargers (TP4056, MicroUSB/Type-C modules), charger/booster combos (PowerBoost 500/1000, Lipo Rider Plus 5V/2.4A), I2C fuel gauges (MAX17048, LC709203F) and Qi wireless charging coils.
7.4V Lipo Battery Charger visual preview7.4V Lipo Battery Charger
Adafruit LC709203F LiPoly / LiIon Fuel Gauge and Battery Monitor visual previewAdafruit LC709203F LiPoly / LiIon Fuel Gauge and Battery Monitor
Adafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy visual previewAdafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy
Adafruit MAX17048 LiPoly / LiIon Fuel Gauge and Battery Monitor visual previewAdafruit MAX17048 LiPoly / LiIon Fuel Gauge and Battery Monitor
Adafruit Micro Lipo - USB LiIon/LiPoly charger [v2] visual previewAdafruit Micro Lipo - USB LiIon/LiPoly charger [v2]
Adafruit Micro-Lipo Charger for LiPo/LiIon Batt w/MicroUSB Jack visual previewAdafruit Micro-Lipo Charger for LiPo/LiIon Batt w/MicroUSB Jack
Adafruit Micro-Lipo Charger for LiPoly Batt with USB Type C Jack visual previewAdafruit Micro-Lipo Charger for LiPoly Batt with USB Type C Jack
BAT Detector v1.0 visual previewBAT Detector v1.0
Battery Detector with Polymer Lithium Ion 1050mAh 3.7V visual previewBattery Detector with Polymer Lithium Ion 1050mAh 3.7V
Battery Detector with Polymer Lithium Ion 5100mAh 3.8V visual previewBattery Detector with Polymer Lithium Ion 5100mAh 3.8V
Crazyflie 2.0 - Qi Inductive Charging Expansion Board visual previewCrazyflie 2.0 - Qi Inductive Charging Expansion Board
DC-DC Charge Discharge Integrated Module (5V/2A) visual previewDC-DC Charge Discharge Integrated Module (5V/2A)
9V Alkaline Battery visual preview
9V Battery Holder visual preview
Lithium Ion Battery - 1000mAh 7.4v visual preview
Lithium Ion Battery - 110mAh visual preview9V alkaline cells, CR2032 coin cells, 3.7V LiPo packs (1000–1200mAh), 7.4V 2S LiPo, 18650 Li-ion holders (1–6 cells), AA/AAA holders in every configuration, and snap leads with barrel adapters.
Power · Batteries · 103 parts
Buck-Boost DC/DC Converter - 8-36V to 12V/6A visual preview
Wall Adapter Power Supply - 9VDC, 650mA (Barrel Jack) visual preview
10W 4 USB Power Adapter visual preview
120W DC-DC Converter 12V@10A visual previewWall adapters (5V–24V), adjustable and fixed buck/boost/buck-boost converters (MT3608, LM2596-class), USB-C PD triggers (HUSB238), breadboard supplies, DIN-rail units and passive barrel-jack adapters.
Power · Supplies & regulators · 143 parts
3.8 / 1.3mm or 3.5 / 1.1mm to 5.5 / 2.1mm DC Jack Adapter Cable visual preview
Adafruit bq25185 USB / DC / Solar Charger with 3.3V Buck Board visual preview
Adafruit bq25185 USB / DC / Solar Lithium Ion/Polymer Charger visual preview
Arc 10W Solar Charger Kit incl. V25 6400mAh Powerbank visual previewSolar panels from 1.5V 250mA flexible film to 18V 10W polysilicon, MPPT solar power managers (DFRobot 5V and 9V/12V/18V, Waveshare 6V–24V), bq25185 charger boards and LTC3588 energy-harvesting breakouts.
Power · Solar power · 28 parts
1.75mm PLA (1kg) - Black visual preview
1.75mm PLA (1kg) - Gold visual preview
1.75mm PLA (1kg) - Green visual preview
1.75mm PLA (1kg) - Natural visual previewDFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.
Tools & prototyping · 3D printing · 53 parts