Mini DC/DC Step-Down (Buck) Converter - 5V @ 1A output

TSR-1 switching buck regulator in SIP-3 package, outputs 5V at 1A from up to 36V input. Up to 94% efficient at +60°C ambient with no heat-sink needed. Requires an additional 10µF+ input capacitor for stability.

Logical pinout · physical placement not verified

+Vin1
Input supply pin for the TSR 1 step-down regulator; Adafruit states 6.5 to 32 VDC input for the 5 V module.
Type · PowerVoltage · 6.5-32 VDC input, source: Adafruit product page and TSR 1 datasheet
GND2
Ground/common return pin. TSR 1 datasheet Pin-Out lists pin 2 as GND.
Type · GroundVoltage · 0 V reference
+Vout3
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.
Type · PowerVoltage · 5 V DC regulated output, up to 1 A per Adafruit product page

Pin	Position	Type	Function	Voltage
+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

Logical pinout · physical placement not verified

Pin details

3 connections

+Vin
Input supply pin for the TSR 1 step-down regulator; Adafruit states 6.5 to 32 VDC input for the 5 V module.
PowerVoltage · 6.5-32 VDC input, source: Adafruit product page and TSR 1 datasheet
1
GND
Ground/common return pin. TSR 1 datasheet Pin-Out lists pin 2 as GND.
GroundVoltage · 0 V reference
2
+Vout
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.
PowerVoltage · 5 V DC regulated output, up to 1 A per Adafruit product page
3

Start wiring

3.3 V · 5 V · Module

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Module pins: +Vin, +Vout, GND. Schematik maps them to your board in the app.

Power supplies

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