TPS54334DDARFeatures
Two 128m/84mMOSFETs for 3A Continuous Output Current Power Good
Low 2 uA Shutdown Quiescent Current
0.8 V Internal Voltage Reference with±1.5% Accuracy Over Temperature
Fixed-Frequency Current Mode Control
Pulse Skipping Boosts Efficiency at Light Loads Overcurrent Protection for Both MOSFETs with Hiccup Mode for Severe Fault Conditions
Thermal and Overvoltage Transient Protection Available in Easy-to-Use 8-Pin SOIC PowerPADM and 10-Pin SON
Monotonic Start-Up into Pre-biased OutputsFeatures
Two 128m/84mMOSFETs for 3A Continuous Output Current Power Good
Low 2 uA Shutdown Quiescent Current
0.8 V Internal Voltage Reference with±1.5% Accuracy Over Temperature
Fixed-Frequency Current Mode Control
Pulse Skipping Boosts Efficiency at Light Loads Overcurrent Protection for Both MOSFETs with Hiccup Mode for Severe Fault Conditions
Thermal and Overvoltage Transient Protection Available in Easy-to-Use 8-Pin SOIC PowerPADM and 10-Pin SON
Monotonic Start-Up into Pre-biased Outputs
TPS54334DDARApplications
Consumer Applications such as a Digital TV(DTV),Set Top Box(STBDVD/Blu-ray Player)
LCD Display.CPE(Cable Modem,WiFi Router) DLP Projectors,Smart Meters
Battery Chargers
Industrial and Car Audio Power Supplies
5V.12 and 24V Distributed Power Bus Supply
TPS54334DDAR Applications
TPS54334DDARis a 28-V3 static power supply current (LO) synchronous monolithic buck converter integrated with MOSFET.TPS54334 implements small designs by integrating MOSFET and implementing current-mode control to reduce the number of external components.The efficiency is maximized by integrating 128m Ω / 84m Ω MOSFET, low steady-state power supply current and light load pulse hopping. Use enable pins. By entering the shutdown mode, the shutdown power supply current is reduced to 2uA.TPS54334 provides precise regulation of various loads through an accurate 1.5% voltage reference on temperature.The cycle-by-cycle current limit on the high-end FET protects the TPS54334 in the case of overload and is enhanced by the low-end source current limit to prevent the current from getting out of control. There is also a low-end sinking current limit that turns off the low-end MOSFET to prevent excessive reverse current, which will trigger Hiccup protection if the over-current condition persists or exceeds the preset time. When the chip temperature exceeds the thermal turn-off temperature, the thermal hiccup protects the disabled part and enables the component again after the built-in hot hiccup time.
