Hw 131 Power Supply Datasheet _hot_ Jun 2026
Using jumpers, each rail of the breadboard can be set independently to 5V , 3.3V , or OFF (0V) .
| Parameter | Conditions | 5V Output | 3.3V Output | |-----------|------------|-----------|-------------| | Output voltage accuracy | No load | 4.98 – 5.02V | 3.28 – 3.32V | | Line regulation | VIN=6.5V to 12V, Iout=300mA | ±20mV | ±15mV | | Load regulation | 0 to 500mA | ±35mV | ±25mV | | Output ripple (noise) | 20MHz BW, Iout=300mA | <50mV p-p | <30mV p-p | | Dropout voltage (minimum input to maintain output) | Iout=500mA | 1.2V | 1.1V | | Short-circuit current | Vout=0V | 850mA (foldback) | 650mA (foldback) | | Quiescent current | No load, VIN=9V | 4mA (total both rails) | - | Hw 131 Power Supply Datasheet
Most modules feature two LDO (Low Dropout) regulators: an AMS1117-5.0 and an AMS1117-3.3 . Using jumpers, each rail of the breadboard can
The HW-131 is a dual-channel, adjustable linear power supply module designed specifically to mount directly onto a standard 830-point solderless breadboard. Its primary function is to take a higher DC voltage input (typically from a 9V battery or a wall adapter) and regulate it down to the standard logic levels used in microcontroller projects: 3.3V and 5V. Its primary function is to take a higher
A critical section of the HW-131 datasheet is the explanation of the voltage selection jumper. This is a 3-pin header with a shunt (cap) that can be moved:
