Texas Instruments TPS54335/36 Synchronous Step Down Converters

Texas Instruments TPS54335 / TPS543336 Synchronous Step Down Converters are 3A, low quiescent supply current synchronous DC-DC converter ICs with up to 28V input support. TI TPS54335/36 integrate MOSFETs and employ current mode switching control, making these devices ideal for compact designs on PCB and for reducing external component count. These buck converters provide accurate regulation for a variety of loads with a well-regulated voltage reference 1.5% over temperature. TPS54335 offers internal 2ms Soft-start and 50kHz to 1.5MHz adjustable frequency. TPS54336 features adjustable soft-start and fixed 340kHz frequency. These TI devices are ideal for use in a variety of applications, including consumer applications (DTVs, set top boxes, and LCD displays), battery chargers, and industrial and car audio power supplies.

Features

Two 128mΩ/84mΩ MOSFETs for 3A Continuous Output Current
TPS54335: Internal 2ms Soft-start, 50kHz-1.5MHz Adjustable Frequency
TPS54336: Adjustable Soft-start, Fixed 340kHz Frequency
Low 2µA Shutdown Quiescent Current
0.8V Internal Voltage Reference with ±0.8% Accuracy at Room Temperature and ±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 Shutdown and Overvoltage Transition Protection
Available in Easy-to-Use 8-Pin SOIC PowerPAD and 10-pin SON
Monotonic Start-Up into Pre-biased Outputs