CXDC6579系列稳压器是一种集成电路，它为降压开关稳压器提供所有的有源功能，能够以优良的线路和负载调节驱动3A负载。这些设备可用于3.3V、5V、12V的固定输出电压和可调输出版本。这些稳压器需要最少数量的外部元件，使用简单，包括内部频率补偿和固定频率振荡器。CXDC6579G系列在150 kHz的开关频率下工作，因此允许比低频开关稳压器所需的更小尺寸的滤波器组件。提供标准的5线到220封装，5针引线为单线选项，5线到263表面安装封装。几个不同的制造商提供了一系列标准电感器，这些电感器经过优化，可与CXDC6579G系列一起使用。这一特性大大简化了开关电源的设计。其他特性包括在规定的输入电压和输出负载条件下，输出电压的保证公差为±2%，振荡器频率的保证公差为±10%。包括外部关机，通常为80μA待机
当前。自保护功能包括输出开关的两级频率降低电流限制和故障条件下完全保护的超温关机。
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产品概述 返回TOP
The CXDC6579G series of regulators are integrated circuits that provide all active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are avail-able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-able output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, and a fixed-frequency oscillator. The CXDC6579G series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with 5 pins lead in one line options, and a 5-lead TO-263 surface mount package. A standard series of inductors are available from several different manufacturers optimized for use with the CXDC6579G series. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±2% tolerance on output voltage under specified input voltage and output load conditions, and ±10% on the oscillator frequency. 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 tem perature shutdown for complete protection under fault conditions.
产品特点 返回TOP
※ 3.3V, 5V, 12V, and adjustable output versions (ADJ)
※ Adjustable version output voltage range, 1.25V to 37V±2% max over line and load conditions
※ Available in TO-220 and TO-263 packages
※ Guaranteed 3A output load current
※ Input voltage range up to 40V
※ Requires only 4 external components
※ Excellent line and load regulation specifications
※ 150 kHz fixed frequency internal oscillator
※ TTL shutdown capability
※ Low power standby mode, IQ typically 80 μA
※ Uses readily available standard inductors
※ Thermal shutdown and current limit protection
应用范围 返回TOP
※ Simple high-efficiency step-down (buck) regulator , CAR DVD
electronic
※ On-card switching regulators , LCD-TV , LCD-monitor , ADSL
※ Positive to negative converter
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产品封装图 返回TOP
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| 型号 | 详细说明 |
| CXDC6572 | 2A同步整流,SOT23-5, 高效率小封装 |
| CXDC6573A | 2.2A, ACT4060/MP1410 |
| CXDC6574 | 3A高效率DC-DC |
| CXDC6575 | 超低压差 |
| CXDC6576 | 36V,3A替代AP1507 |
| CXDC6577 | 2.5A-3A输出高频高效率高耐压替代MP2490 |
| CXDC6578 | 3A DC/DC |
| CXDC6579 | high-freq 3A DC/DC |
| CXDC6580 | 1.5A DC/DC |
| CXDC6581 | 60V高压恒压恒流,替代AP1509,AP1507,XL7005 |
| CXDC6582 | 60V-30W-恒流-高精度亮度调节 |
| CXDC6583 | 55V高耐压5A |
| CXDC6584 | 90V降压恒压大电流 |
| CXDC6585 | 85V高耐压MOS内置 |
| CXDC6586 | 高压600V的恒流LED驱动IC |
| CXDC6587 | |
| CXDC6588 | |
| CXDC6589 | |
| CXDC6590 | |
| CXDC6591 | |
| CXDC6592 | |
