DCP010505BP-U 1W Isolated 5V DC/DC Converter

ElecSuppliers Part Number GuideSep 06, 2026

DCP010505BP-U is a miniature isolated DC/DC converter from Texas Instruments designed for applications that need galvanic isolation between power domains without building a complete isolated converter from discrete components. It belongs to the DCP01B family and combines the converter, transformer and control circuitry in a compact 7-pin package.

With a 5V supply and a 5V isolated output, DCP010505BP-U provides a practical solution for isolated signal paths, instrumentation and industrial control circuits where a small isolated power source is required.

Compact 1W Isolated Power Conversion

DCP010505BP-U operates from a 5V supply and provides an isolated 5V output with up to 1W of output power. The converter is unregulated, making it particularly suitable for circuits where a tightly regulated isolated output is not required.

The device can deliver up to approximately 200mA of output current, while its integrated architecture reduces the number of external components normally associated with isolated power conversion.

The 5V input range is specified around the nominal supply voltage, while the isolated output is suitable for powering isolated interface and signal-conditioning circuits.

1kV Isolation for Signal Path Protection

One of the key characteristics of DCP010505BP-U is its integrated isolation barrier. The DCP01B series provides 1kV isolation and is designed for applications where separate circuit grounds must be electrically isolated.

This makes the device useful for breaking ground loops and creating an isolated power domain around sensitive analog or digital circuitry. It can also simplify isolation architectures in measurement and control equipment.

Synchronization and Output Disable Functions

DCP010505BP-U includes device-to-device synchronization capability, allowing switching frequencies to be coordinated when multiple converter modules are used in the same system.

An output disable function is also available for system-level power management. These features provide designers with more control over the operation of isolated power sections without requiring a separate external converter controller.

The converter operates at a high switching frequency, helping maintain a compact implementation while reducing the size requirements of associated external filtering components.

Integrated Protection Features

The DCP010505BP-U integrates protection functions directly into the converter architecture. Thermal protection helps protect the device under excessive temperature conditions, while short-circuit protection improves robustness during abnormal load conditions.

The device also provides EMC performance suitable for applications requiring controlled conducted and radiated emissions. The DCP01B family is specified for EN55022 Class B EMC performance under the appropriate application conditions.

7-Pin SOP Package

The DCP010505BP-U uses a 7-pin SOP package, providing a compact board-level solution for isolated power conversion. The device is specified for an operating temperature range of -40°C to +100°C.

The small package and integrated converter architecture can be particularly useful where PCB space is limited and designers want to avoid using a larger isolated power module.

Applications for DCP010505BP-U

DCP010505BP-U is suited to signal-path isolation, ground-loop elimination, data acquisition, industrial control and instrumentation. It can provide isolated power for interface circuits, analog measurement sections and other low-power functional blocks.

Its combination of 5V-to-5V conversion, integrated isolation, synchronization and protection makes DCP010505BP-U a practical option for compact isolated power architectures where a 1W unregulated output is sufficient.