
Your power supply problems just got SOLVED! These DC/DC converter step-down switching regulators are drop-in replacements for inefficient 78xx linear regulators.
Input supply pin for the TSR 1 step-down regulator; Adafruit states 6.5 to 32 VDC input for the 5 V module.
Ground/common return pin. TSR 1 datasheet Pin-Out lists pin 2 as GND.
Regulated output pin. Adafruit product page states 5 V regulated output up to 1 A; TSR 1 datasheet Pin-Out lists pin 3 as +Vout.
| Pin | Position | Type | Function | Voltage |
|---|
6.5-32 VDC input, source: Adafruit product page and TSR 1 datasheet · 0 V reference
Verify supply voltage and logic levels before powering up.
Module pins: +Vin, +Vout, GND. Schematik maps them to your board in the app.
9 VDC 1000mA regulated switching power adapter - UL listed visual preview
Adafruit PowerBoost 1000 Basic - 5V USB Boost @ 1000mA from 1.8V+ visual preview
MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics visual preview
DC-DC Automatic Step Up-down Power Module (3~15V to 5V 600mA) visual previewCompare wall adapters, buck regulators, buck-boost boards, USB-C PD barrel adapters and passive cables before treating them as interchangeable power supplies.
Power · Power supplies & regulators · 24 parts
9V Alkaline Battery visual preview
9V Battery Holder visual preview
9V Battery Snap visual preview
9V to Barrel Jack Adapter visual previewChoose batteries, holders, adapters and boost boards without mixing voltage class, chemistry, connector polarity, charging method or current delivery.
Power · Batteries · 21 parts
SparkFun Qwiic Pro Micro BoogieBoard visual preview
9V to Barrel Jack Adapter visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics visual previewSort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.
Connectors & cables · Connectors · 28 parts
RGB backlight positive LCD 16x2 visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
I2C 20x4 Arduino LCD Display Module visual preview
Gravity: I2C 16x2 Arduino LCD with RGB Backlight Display V2.0 visual previewCharacter LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.
Displays · TFT & LCD displays · 35 parts
| +Vin | 1 | power | Input supply pin for the TSR 1 step-down regulator; Adafruit states 6.5 to 32 VDC input for the 5 V module. | 6.5-32 VDC input, source: Adafruit product page and TSR 1 datasheet |
| GND | 2 | ground | Ground/common return pin. TSR 1 datasheet Pin-Out lists pin 2 as GND. | 0 V reference |
| +Vout | 3 | power | Regulated output pin. Adafruit product page states 5 V regulated output up to 1 A; TSR 1 datasheet Pin-Out lists pin 3 as +Vout. | 5 V DC regulated output, up to 1 A per Adafruit product page |