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.
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 |
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.
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Power · Batteries · 105 parts
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MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter visual preview
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1.75mm PLA (1kg) - Green visual preview
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| 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 |