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LD1084: Low Drop Positive Voltage Regulator (Fixed and Adjustable)

 
LD1084 photo The LD1084 is a Low Drop Voltage Regulator able to provide up to 5A of output current. Dropout is guaranteed at a maximum of 1.3V at the maximum output current, decreasing at lower loads. The LD1084 is pin compatible with older 3-terminal adjustable regulators, but has better performances in terms 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, therefore increasing efficiency. Only a 10mF minimum capacitor is needed for stability. The device is supplied in TO-220 and D2PAK packages. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25°C. This devices is pin to pin compatible with the same devices made from Linear Technology, Semtech, Cherry and Linfinity.

Features

1.3V typical dropout voltage @ 5A
Guaranteed output current up to 5A
Internal power and thermal limit
Package availability: TO-220 and D2PAK
Output tolerance ±1% at 25°C and ±2% in full temperature range
Pinout compatibility with standard adjustable Voltage Regulators
Three terminal adjustable or fixed output voltages of: 1.8V, 2.5V, 2.85V, 3.3V, 3.6V, 5V, 8V, 9V, 12V.

Segments & Applications

Desktop PCs
Graphics and Sound Chipset
TV Sets & Monitors
ASIC and Low Voltage IC Supplies
Power Supplies
Palmtop/Laptop Computers
VCRs

Application Circuit

Application circuit

Pin Configurations

D2PAK pin configuration
D2PAK
TO-220 pin configuration
TO-220

Pin # Symbol Name and Function
1 ADJ / GND ADJ or Ground Pin*
2 OUT Output Pin
3 IN Input Pin
* for fixed version

Order Codes

Fixed Adjustable
PACKAGE TYPE PACKAGE TYPE
D2PAK/A (TUBE) LD1084D2Moo D2PAK/A (TUBE) LD1084D2M
D2PAK/A (T&R) LD1084D2M00R D2PAK/A (T&R) LD1084D2M-R
D2PAK (TUBE) LD1084D2T00 D2PAK (TUBE) LD1084D2T
D2PAK (T&R) LD1084D2T00R D2PAK (T&R) LD1084D2T-R
TO-220 (TUBE) LD1084V00 TO-220 (TUBE) LD1084V

Cross Reference

ST CHERRY LINEAR TECH SEMTECH LINFINITY
LD1084 CS5205 LT1084 EZ1084 LX8384