TPS54327

4.5V 至 18V 输入，3A 同步降压 SWIFT™ 转换器

The device is an adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54327 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54327 uses the D-CAP2 mode control which provides a fast transient response with no external compensation components. The TPS54327 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance ESR output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54327 is available in the 8-pin DDA package and 10-pin DRC, and is designed to operate from –40°C to 85°C.

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D-CAP2™ Mode Enables Fast Transient

Response

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Low-Output Ripple and Allows Ceramic Output

Capacitor

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Wide VIN Input Voltage Range: 4.5 V to 18 V

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Output Voltage Range: 0.76 V to 7 V

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Highly Efficient Integrated FETs Optimized

for Lower Duty Cycle Applications

– 100 mΩ High-Side and 70 mΩ Low-Side

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High Efficiency, Less Than 10 µA at shutdown

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High Initial Bandgap Reference Accuracy

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Adjustable Soft Start

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Prebiased Soft Start

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700-kHz Switching Frequency fSW

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Cycle-By-Cycle Overcurrent Limit

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APPLICA ONS

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Wide Range of Applications for Low Voltage

System

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Digital TV Power Supply

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High Definition Blu-ray Disc™ Players

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Networking Home Terminal

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Digital Set Top Box STB

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