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Full machine-readable index: https://core-electronics.com.au/llms.txt # Adafruit MiniBoost 5V @ 1A - TPS61023 **Type:** Product page · **SKU:** ADA4654 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-miniboost-5v-1a-tps61023.html ([markdown](https://core-electronics.com.au/adafruit-miniboost-5v-1a-tps61023.html.md)) This adorable little board will come in very handy whenever you need a good amount of 5V power. It's the size of a linear regulator, but it's actually a mini-booster! Input 2-5VDC on one side, and get 5V at up to 1A supply on the other. Perfect for use with battery-powered projects with 2 or 3 Alkaline, or a single Lithium battery. ## Pricing - **Price:** $7.65 (inc GST) — $6.95 AUD, exc GST - **Quantity discounts:** 10+ $6.75 (exc GST) · 50+ $6.61 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 17 today, and up to 500 more in 8–12 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA4654:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA4654:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description This adorable little board will come in very handy whenever you need a good amount of 5V power. It's the size of a linear regulator, but it's actually a mini-booster! Input 2-5VDC on one side, and get 5V at up to 1A supply on the other. Perfect for use with battery-powered projects with 2 or 3 Alkaline, or a single Lithium battery. This booster uses a very small but thermally efficient chip from TI, the TPS61023. This chip has nearly everything integrated, including dual 3A MOSFET switches. Note that the switch doesn't tell you the max output, see the tables below for that! Adafruit set the feedback resistors to give a 5.2V output, this is a little higher than 5V which helps account for voltage drop over cables. Adafruit took some measurements of the input/output current and max draw using a bench-top power supply and electronic load: - At 2V DC in, max current out at 5V is 300mA (the minimum input voltage that will 'boot' the booster) - At 2.5V DC in, max current out at 5V is 500mA (two NiMH rechargables) - At 3V DC in, max current out at 5V is 800mA (two alkalines or a near-dead LiPo) - At 3.5V DC in, max current out at 5V is 1100 mA (this is a LiPoly nominal voltage) - At 4V DC in, max current out at 5V is 1400 mA (3 NiMH, or a fresh LiPoly) Most people will want to use a Lipoly or LiIon battery with a booster, with a nominal voltage of 3.7V. Here's the efficiencies at that voltage: - 5.2V 100mA out requires 160mA in at 3.7V (88%) - 5.2V 250mA out requires 400mA in at 3.7V (88%) - 5.2V 500mA out requires 800mA in at 3.7V (88%) - 5.2V 1000mA out requires 1800mA in at 3.7V (78%) As you can see, you'll be humming at ~88% as 'lower' currents of about 500mA and less. You can get 1A out but your efficiency will drop a bit to ~78% You get one fully assembled breakout with a TPS61023 and components, and a small bit of header. Give it 3-5V on the IN and ground pins. Then you'll have 5V on the OUT pin. The enable pin can be pulled low to disable the output, its a 'true disconnect' so the output will be completely de-powered. **Technical Specification** - Input voltage range: 0.5 V to 5.5 V - 1.8-V Minimum input voltage for start-up - Two 47-mΩ (LS) / 68-mΩ (HS) MOSFETs - 3.7-A Valley switching current limit - 1-MHz Switching frequency when VIN > 1.5 V and 0.5-MHz switching frequency when VIN < 1 V - Typical 0.1µA shutdown current from Vin and SW - ±2.5% Reference voltage accuracy over –40°C to +125°C - Auto PFM operation mode at light load - Pass-through mode when VIN > VOUT - The true disconnection between input and output during shutdown - Output overvoltage and thermal shutdown protection - Output short-circuit protection - Product Dimensions: 17.8mm x 11.3mm x 5.6mm / 0.7" x 0.4" x 0.2" - Product Weight: 1.0g / 0.0oz ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/4/6/4654-00.jpg)