H03R0x is a compact DC-DC buck power supply with a 3.3V/1A DC output and 5-40V DC input. The output voltage is provided through Hexabitz SMD edge-pad connectors (3.3V on top and GND on bottom). The -T module version comes with a 5.08 mm terminal block connector for input voltage, while the -J comes with a DC power jack. Use this module to power all your Hexabitz creations (and other hardware) from a DC source (battery, AC/DC wall adapter, etc.)
Specifications
Technical Specifications
Input voltage: +5V to +40V DC.
Output voltage: +3.3V DC.
Output current: 1A.
Six output power ports (+3.3V and GND).
TI LM2575SX-3.3/NOPB high-efficiency, 1A, step-down, switching voltage regulator:
52 kHz Fixed Frequency Internal Oscillators.
Thermal shutdown and current limit protection.
Green power-OK LED.
Input voltage connector: TE Connectivity/AMP 2-position 5.08 mm shrouded vertical or right-angle terminal block or CUI PJ-202A horizontalDC power jack.
Physical Properties
Shape: Hexagon
Size: 30 mm short diagonal
Area: 7.8 cm^2
Weight: 4 g
Soldermask Color: Dark green
Finish: ENIG (gold) or HASL-LF (tin)
Projects
Please visit this product projects on Hackster.io network.
BOM
H03R00-T BOM
Item
MPN
MFN
Description
Quantity Per Module
C1
UVR1H101MPD1TD
Nichicon
Cap Aluminum 100uF 50V 20% (8 X 11.5mm) Radial 3.5mm 260mA 2000 hr 85°C Ammo Pack
1
C2
6TPC330MA
Panasonic
Cap Tant Solid 330uF 6.3V D2 CASE 20% (7.3 X 4.3 X 1.9mm) SMD 7343,D2 0.04 Ohm 105°C Embossed T/R
1
D1
1N5819HW-7-F
Diodes Inc.
1.0 A Surface Mount Schottky Barrier Rectifier, 40 V, -65 to 125 degC, 2-Pin SOD-123 Package, RoHS, Tape and Reel
1
D2
VLMTG1300-GS08
Vishay
Green 0603 130º Clear 450 mcd 3.2 V Surface Mount ChipLED
A: You can solder wires and many types of connectors to the SMD edge pads. Our favorite one is the 2-pin 2.54 mm male header which fits their perfectly, but many other connectors work fine as well.
A: Theoretically you can do that as the edge PCB connectors are perfect to connect modules in parallel. However, be careful, as sometimes small variations in output voltage might cause current to flow from one power supply to another. We will have in the future dedicated modules to handle load-sharing between power supplies!
Have more questions? Please check our main FAQ page and feel free to contact us for any unanswered questions.
