TD2576数据手册Techcode中文资料规格书

描述 Description

The TD2576 is a series of easy to use fixed and adjustable step-down (buck) switch-mode voltage regulators. These devices are available in fixed output voltage of 3.3V, 5V, and an adjustable output version. Both versions are capable of driving a 3A load with excellent line and load regulation.Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator. The output voltage is guaranteed to ±3% tolerance under specified input voltage and output load conditions. The oscillator frequency is guaranteed to ±15%. External shutdown is included, featuring typically 80 µA standby current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.The TD2776 is available in TO-220B-5L TO220-5L and TO-263-5L packages.

特性 Features

* 3.3V, 5V and adjustable output versions\r
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* Output adjustable from 1.23v to 43V\r
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* Fixed 52KHz frequency internal oscillator\r
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* Guaranteed 3A output load current\r
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* Input voltage range up to 45V\r
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* Low power standby mode, IQ typically 80 µA\r
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* TTL shutdown capability\r
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* Excellent line and load regulation\r
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* Requires only 4 external components\r
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* High efficiency\r
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* Thermal shutdown and current limit protection\r
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* Available in TO-220B/TO220 and TO-263 packages

应用 Application

* Simple High-efficiency step-down regulator\r
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* On-card switching regulators\r
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* Positive to negative converter\r
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* LCD monitor and LCD TV\r
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* DVD recorder and PDP TV\r
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* Battery charger\r
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* Step-down to 3.3V for microprocessors