LD1085CDT-R| Datasheet

LD1085CDT-R, LD1085CXX

Datasheet preview, take a look at Datasheets before downloading (Data Sheet is available on manufacturer site)

LD1085Cxx
3A Low drop positive voltage regulator adjustable
Features

Typical dropout 1.3V (at 3A) Three terminal adjustable output voltage Guaranteed output current up to 3A Output tolerance 2% at 25 C and 3% in full temperature range Internal power and thermal limit Wide operating temperature range -40 C to 125 C Package available: DPAK and TO-220FP Pinout compatibility with standard adjustable VREG
TO-220FP DPAK

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 LD1085C quiescent current flows into the load, so increase efficiency. Only a 10uF minimum capacitor is need for stability. The device is supplied in DPAK. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within 2% at 25 C.

Description
The LD1085C is a LOW DROP Voltage Regulator able to provide up to 3A of Output Current. Dropout is guaranteed at a maximum of 1.5V at the maximum output current, decreasing at lower loads. The LD1085C is pin to pin compatible with the older 3-terminal adjustable regulators, but has Figure 1. Schematic diagram

July 2007

Rev. 7

1/17
www.st.com 17