The characteristics of TPS56339

Input voltage range: 4.5V to 24V

Output voltage range: 0.8V to 16V

3A Maximum continuous output current

500kHz fixed switching frequency

Supports duty cycle up to 97%

Integrated 70m ω and 35m ω MOSFET

The cut-off current is typically 3µA

The typical static current is 98µA

Internal 5ms soft boot

Easy to use internal loop compensation

Periodic current limiting for high - side and low - side MOSFEts

Unlatched UVP, UVLO, and TSD protection

SOT - 23 (6) encapsulation

Create custom designs using TPS56339 with the help of WEBENCH® Power Designer

The specification of TPS56339

TPS56339 is a 3A synchronous buck converter with input voltage range from 4.5V to 24V. The device contains two integrated switching mosfets, internal loop compensation, and 5ms internal soft start capabilities to reduce the number of components. With the SOT-23 (6) package, the device achieves high power density and takes up very little space on the PCB.



TPS56339 uses advanced simulated current mode (AECM) control to achieve fast transient response at fixed frequency. The device has an internal adaptive loop adjustment function, which eliminates the need for external compensation over a wide voltage output range.



The high-side periodic current limit protects the device in the event of current overload and enhances the limiting effect by preventing current loss through the low-side pull current limit. Discontinuous protection will be triggered in case of undervoltage and thermal turn-off protection.