LD1084V| Datasheet

LD1084V, LD1084V12, LD1084V25, LD1084V50, LD1084XX, LD1084XX12, LD1084XX15, LD1084XX18, LD1084XX25, LD1084XX28, LD1084XX33, LD1084XX36, LD1084XX50, LD1084XX80, LD1084XX90

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LD1084 series
5A Low drop positive voltage regulator adjustable and fixed
Features

Typical dropout 1.3V (at 5A) Three terminal adjustable or fixed output voltage 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, 3.6V, 5V, 8V, 9V, 12V. Guaranteed output current up to 5A Output tolerance 1% at 25 C and 2% in full temperature range Internal power and thermal limit Wide operating temperature range -40 C to 125 C Package available: TO-220, D2PAK, D2PAK/A Pinout compatibility with standard adjustable VREG
TO-220 D2PAK

D2PAK/A

Description
The LD1084 is a LOW DROP Voltage Regulator able to provide up to 5A of Output Current. Dropout is guaranteed at a maximum of 1.5V at the maximum output current, decreasing at lower loads. The LD1084 is pin to pin compatible with the older 3-terminal adjustable regulators, but has better performances in term of drop and output tolerance.

A 2.85V 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 LD1084 quiescent current flows into the load, so increase efficiency. Only a 10uF 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.

Schematic diagram

June 2007

Rev. 7

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