TPS54340 - 具有 Eco-mode 的 42V 输入、3.5A、降压 DC/DC 转换器

TPS54340是TI德州仪器公司的一款转换器（集成开关）产品，TPS54340是具有 Eco-mode 的 42V 输入、3.5A、降压 DC/DC 转换器，本站介绍了TPS54340的封装应用图解、特点和优点、功能等，并给出了与TPS54340相关的TI元器件型号供参考。

TPS54340 - 具有 Eco-mode 的 42V 输入、3.5A、降压 DC/DC 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

4.5 V to 42 V (45 V Abs Max) Input Range
3.5 A Continuous Current, 4.5 A Minimum Peak Inductor Current Limit
Current Mode Control DC-DC Converter
92-mΩ High-Side MOSFET
High Efficiency at Light Loads with Pulse Skipping Eco-mode™
Low Dropout at Light Loads with Integrated BOOT Recharge FET
146 μA Operating Quiescent Current
1 μA Shutdown Current
100 kHz to 2.5 MHz Fixed Switching Frequency
Synchronizes to External Clock
Adjustable UVLO Voltage and Hysteresis
Internal Soft-Start
Accurate Cycle-by-Cycle Current Limit
Thermal, Overvoltage, and Frequency Foldback Protection
0.8 V 1% Internal Voltage Reference
8-Terminal HSOIC with PowerPAD™ Package
–40°C to 150°C TJ Operating Range
Supported by WEBENCH™ Software Tool

产品应用

12 V, 24 V Industrial, Automotive and Communications Power Systems

产品说明

The TPS54340 is a 42 V, 3.5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 μA. Shutdown supply current is reduced to 1 μA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54340 is available in an 8-terminal thermally enhanced HSOIC PowerPAD™ package.

Device Information

ORDER NUMBER	PACKAGE	BODY SIZE
TPS54340DDA	HSOIC (8)	4,89mm x 3,9mm

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