TPS54973PWP集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

TPS54973PWP属于集成电路（IC）的稳压器-DC-DC开关稳压器。由德州仪器制造生产的TPS54973PWP稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

FEATURES

15-mΩ MOSFET Switches for High Efficiency

at 9-A Continuous Output Source or Sink

Current

Disabled Current Sinking During Start-Up

0.9-V to 2.5-V Adjustable Output Voltage

Range With 1.0% Accuracy

Wide PWM Frequency:

Fixed 350 kHz, 550 kHz or

Adjustable 280 kHz to 700 kHz

Synchronizable to 700 kHz

Load Protected by Peak Current Limit and

Thermal Shutdown

Integrated Solution Reduces Board Area and

Component Count

APPLICATIONS

Low-Voltage, High-Density Distributed Power

Systems

Point of Load Regulation for High

Performance DSPs, FPGAs, ASICs and

Microprocessors

Broadband, Networking and Optical

Communications Infrastructure

Power PC Series Processors

DESCRIPTION

As a member of the SWIFT™ family of dc/dc regulators,

the TPS54973 low-input voltage high-output current

synchronous buck PWM converter integrates all

required active components. Included on the substrate

with the listed features are a true, high performance,

voltage error amplifier that enables maximum

performance and flexibility in choosing the output filter

L and C components; an undervoltage-lockout circuit to

prevent start-up until the input voltage reaches 3 V; an

internally or externally set slow-start circuit to limit

in-rush currents; and a power good output useful for

processor/logic reset, fault signaling, and supply

sequencing.

For reliable power up in output precharge applications,

the TPS54973 is designed to only source current during

startup.

The TPS54973 is available in a thermally enhanced

28-pin TSSOP (PWP) PowerPAD™ package, which

eliminates bulky heatsinks. TI provides evaluation

modules and the SWIFT™ designer software tool to aid

in quickly achieving high-performance power supply

designs to meet aggressive equipment development

cycles.