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

LX8585-33CP属于集成电路（IC） > 线性 + 开关稳压器。美高森美公司制造生产的LX8585-33CP稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。