LD1585CV| Datasheet

LD1585CV, LD1585CV50, LD1585CXX, LD1585CXX15, LD1585CXX25, LD1585CXX28, LD1585CXX50, LD1585CXX80, LD1585CXX90

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LD1585Cxx
5 A low dropout fast response positive voltage regulator adjustable and fixed
Features

Typical dropout 1.2 V Fast transient response Three terminal adjustable or fixed output voltage 1.5 V, 2.5 V, 2.85 V, 5 V, 8 V, 9 V Guaranteed output current up to 5 A Output tolerance 1% at 25 C and 2 % in full temperature range Internal power and thermal limit Wide operating temperature range 0 C to 125 C Package available: TO-220, D2PAK/A Pinout compatibility with standard adjustable VREG The most important feature of the device consist in lower dropout voltage and very fast transient response. A 2.85 V output version is suitable for SCSI-2 active termination. Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1585C quiescent current flows into the load, so increase efficiency. Only a 10 uF minimum capacitor is need for stability. The device is supplied in TO-220, D2PAK and D2PAK/A. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within 1% at 25 C.
TO-220 D2PAK/A

Description
The LD1585C is a LOW DROP voltage regulator able to provide up to 5 A of output current. Dropout is guaranteed at a maximum of 1.4 V at the maximum output current, decreasing at lower loads. The device has been improved to be utilized in low voltage applications where transient response and minimum input voltage are critical. Table 1. Device summary

Order codes Part number TO-220 LD1585CXX15 LD1585CXX25 LD1585CXX28 LD1585CXX50 LD1585CXX80 LD1585CXX90 LD1585CXX LD1585CV LD1585CV50 D2PAK/A (T&R) LD1585CD2M15R LD1585CD2M25R LD1585CD2M28R LD1585CD2M50R LD1585CD2M80R LD1585CD2M90R Output voltage 1.5 V 2.5 V 2.85 V 5.0 V 8.0 V 9.0 V ADJ

November 2007

Rev 6

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