DD38LOSA 3.3V DC-DC / LDO Step-Down Regulator Module

DD38LOSA 3.3V DC-DC / LDO Step-Down Regulator Module

The DD38LOSA 3.3V regulator module combines a DC-DC switching regulator and LDO in a single compact module, providing a stable 3.3V output from a wide input range of 3.8V to 18V. Higher efficiency than a pure LDO — ideal for battery-powered projects where minimizing heat and power loss is important.

Key Specifications

• IC: DD38LOSA | Input: 3.8–18V | Output: 3.3V
• Max current: 600mA | Efficiency: high (DC-DC switching)
• Header: 2.54mm breadboard compatible
• Compliance: RoHS compliant

Why Choose This?

• ✅ Wide input range (3.8–18V) — works from LiPo, Li-ion, 9V, 12V supplies
• ✅ High efficiency — less heat than LDO regulators at high input voltages
• ✅ Stable 3.3V — clean output for sensitive RF and sensor modules
• ✅ Compact module — minimal footprint for embedded power supply

Typical Applications

• Battery-powered 3.3V sensor node power supply
• ESP8266 and nRF24L01+ power from LiPo battery
• 12V to 3.3V efficient step-down for embedded systems
• Mixed-voltage project 3.3V power rail

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