TPS54335A - 具有 Eco-Mode 的 4.5V 至 28V 输入、3A 同步降压转换器

TPS54335A是TI德州仪器公司的一款转换器（集成开关）产品，TPS54335A是具有 Eco-Mode 的 4.5V 至 28V 输入、3A 同步降压转换器，本站介绍了TPS54335A的封装应用图解、特点和优点、功能等，并给出了与TPS54335A相关的TI元器件型号供参考。

TPS54335A - 具有 Eco-Mode 的 4.5V 至 28V 输入、3A 同步降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

Synchronous 128-mΩ and 84-mΩ MOSFETs for 3-A Continuous Output Current
TPS54335A: Internal 2-ms Soft-Start, 50-kHz to 1.5-MHz Adjustable Frequency
TPS54336A: Adjustable Soft-Start,Fixed 340-kHz Frequency
Low 2-µA Shutdown, Quiescent Current
0.8-V Voltage Reference with ±0.8% Accuracy
Current Mode Control
Monotonic Startup into Pre-Biased Outputs
Pulse Skipping for Light-Load Efficiency
Hiccup Mode Overcurrent Protection
Thermal Shutdown (TSD) and Overvoltage Transition Protection
8-Pin SO PowerPAD™ and 10-Pin VSON Packages

产品应用

Consumer Applications such as a Digital TV (DTV), Set Top Box (STB, DVD/Blu-ray Player), LCD Display, CPE (Cable Modem, WiFi Router), DLP Projectors, Smart Meters
Battery Chargers
Industrial and Car Audio Power Supplies
5-V, 12-V, and 24-V Distributed Power Bus Supply

产品说明

The TPS5433xA family of devices are synchronous converters with an input-voltage range of 4.5 to 28 V. These devices include an integrated low-side switching FET that eliminates the need for an external diode which reduces component count.

Efficiency is maximized through the integrated 128-mΩ and 84-mΩ MOSFETs, low IQ and pulse skipping at light loads. Using the enable pin, the shutdown supply current is reduced to 2 μA. This step-down (buck) converter provides accurate regulation for a variety of loads with a well-regulated voltage reference that is 1.5% over temperature.

Cycle-by-cycle current limiting on the high-side MOSFET protects the TPS5433xA family of devices in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. A low-side sinking current-limit turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection is triggered if the overcurrent condition continues for longer than the preset time. Thermal shutdown disables the device when the die temperature exceeds the threshold and enables the device again after the built-in thermal hiccup time.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS54335A TPS54336A	SO PowerPAD (8)	4.89 mm × 3.90 mm
TPS54335A TPS54336A	VSON (10)	3.00 mm × 3.00 mm
TPS54335-1A	VSON (10)(2)	3.00 mm × 3.00 mm

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