LX8585A-33CDD集成電路（IC）的線性+開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

LX8585A-33CDD屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由美高森美公司制造生產(chǎn)的LX8585A-33CDD穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負(fù)載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應(yīng)用。

DESCRIPTION

The LX8585/85A Series ICs are low dropout three-terminal regulators with a minimum of 4.6A output current. Pentium? Processor and Power PCTM applications requiring fast transient response are ideally suited for this product family. The LX8585A is guaranteed to have < 1.2V at 4.6A, while the LX8585 are specified for 1.4V, making them ideal to provide well regulated outputs of 2.5V to 3.6V using a 5V input supply. Fixed versions are also available and specified in the Available Options table below.

Current limit is trimmed above 4.6A to ensure adequate output current and controlled short-circuit current. On-chip thermal limiting provides protection against any possible overload that would create excessive junction temperatures.

The LX8585/85A family is available in both through-hole and surface-mount versions of the industry standard 3-pin TO-220 / TO-263 power packages.

The LX1431 Programmable Reference and LX8585A Series products offer precision output voltage and are ideal for use in VRE applications (see application below). For higher current applications, see the LX8584 data sheet.

KEY FEATURES

■ THREE-TERMINAL ADJUSTABLE OR FIXED OUTPUT

■ GUARANTEED < 1.2V HEADROOM AT 4.6A (LX8585A)

■ GUARANTEED < 1.4V HEADROOM AT 4.6A (LX8585)

■ GUARANTEED < 1.3V HEADROOM AT 3A

■ OUTPUT CURRENT OF 4.6A MINIMUM

□ FAST TRANSIENT RESPONSE

□ 1 VOLTAGE REFERENCE INITIAL ACCURACY

□ OUTPUT SHORT CIRCUIT PROTECTION

□ BUILT-IN THERMAL SHUTDOWN

APPLICATIONS

■ PENTIUM PROCESSOR SUPPLIES

■ POWER PC SUPPLIES

■ MICROPROCESSOR SUPPLIES

■ LOW VOLTAGE LOGIC SUPPLIES

■ BATTERY POWERED CIRCUIT

■ POST REGULATOR FOR SWITCHING SUPPLY

■ CYRIX? 6x86TM SUPPLIES

■ AMD-K5TM SUPPLIES