LD1085D2T33

图3A低压差正电压调节器调节和固定 3A Low drop positive voltage regulator adjustable and fixed

DESCRIPTION

The LD1085 is a LOW DROP Voltage Regulator able to provide up to 3A of Output Current.

Dropout is guaranteed at a maximum of 1.2V a the maximum output current, decreasing at lower

loads. The LD1085 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 LD1085 quiescent current flows into the load, so increase efficiency. Only a 10µF minimum capacitor is need for stability.

The device is supplied in TO-220, TO-220FP, D2PAK and D2PAK/A. On chip trimming allows the

regulator to reach a very tight output voltage tolerance, within ±1% at 25°C.

■ TYPICAL DROPOUT 1.3V AT 3A

■ 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 3A

■ OUPUT 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, TO-220FP D2PAK, D2PAK/A

■ PINOUT COMPATIBILITY WITH STANDARD ADJUSTABLE VREG