TPS54283中文资料具有内部补偿的 4.5V 至 28V 输入、双路 2A 输出、300kHz 降压转换器数据手册TI规格书

描述 Description

TPS54283 and TPS54286 are dual output non-synchronous buck converters capable of supporting 2-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage. With internally-determined operating frequency, soft start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 3 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications not needing the full load capability of both outputs. The outputs may be enabled independently, or may be configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may also be powered from different sources.

特性 Features

• 4.5-V to 28-V Input Range
• Output Current Up to 2 A
• TPS54283: 300 kHz
• Two Selectable Levels of Overcurrent Protection (Output 2)
• 2.1-ms Internal Soft Start
• Ratiometric or Sequential Startup Modes Selectable by a Single Pin
• Current Mode Control
• Pulse-by-Pulse Overcurrent Protection
• 14-Pin PowerPAD™ HTSSOP package
• Set Top Box
• Power for DSP
• Consumer Electronics

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